Solved papers for Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2005

done Chhattisgarh PMT Solved Paper-2005 Total Questions - 400

• question_answer1) L, C and R represent physical quantities inductance, capacitance and resistance respectively. The combination representing dimension of frequency is
  A)
  LC                                          
  done clear
  B)
   \[{{(LC)}^{-1/2}}\]
  done clear
  C)
   \[{{(L/C)}^{-1/2}}\]                        
  done clear
  D)
   \[\text{C/L}\]
  done clear
  View Answer play_arrow

• question_answer2) Energy of a photon is given by \[\text{E=hv}\] where v is the number of vibrations per second and h is Planck's constant. Dimensions of Planck's constant are
  A)
   \[\text{ }\!\![\!\!\text{ }{{\text{M}}^{\text{0}}}{{\text{L}}^{\text{0}}}{{\text{T}}^{\text{0}}}\text{ }\!\!]\!\!\text{ }\]                                       
  done clear
  B)
   \[\text{ }\!\![\!\!\text{ M}{{\text{L}}^{2}}{{\text{T}}^{\text{-1}}}\text{ }\!\!]\!\!\text{ }\]
  done clear
  C)
   \[\text{ }\!\![\!\!\text{ M}{{\text{L}}^{2}}{{\text{T}}^{\text{-2}}}\text{ }\!\!]\!\!\text{ }\]                          
  done clear
  D)
   \[\text{ }\!\![\!\!\text{ M}{{\text{L}}^{2}}{{\text{T}}^{\text{-3}}}\text{ }\!\!]\!\!\text{ }\]
  done clear
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• question_answer3) A particle moving with a uniform acceleration travels 24 m and 64 m in the first two consecutive intervals of 4s each. Its initial velocity is
  A)
   1m/s                                    
  done clear
  B)
   10m/s
  done clear
  C)
   5 m/s                                   
  done clear
  D)
   2 m/s
  done clear
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• question_answer4) A bullet is fired with a speed of 1000 m/s in order to hit a target 100 m away. If g = 10 m/s2. The gun should be aimed
  A)
   directly towards the target
  done clear
  B)
   5 cm above the target
  done clear
  C)
   10 cm above the target
  done clear
  D)
   15 cm above the target
  done clear
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• question_answer5) A particle moves in the \[\text{xy-}\]plane under the action of a force \[\mathbf{\vec{F}}\] such that the components of its linear momentum \[\mathbf{\vec{P}}\] at any time t are \[{{P}_{x}}=2\,\cos \,t,\,{{P}_{y}}=2\,\sin \,t.\]The angle between F and p at time t is
  A)
  \[90{}^\circ \]
  done clear
  B)
  \[0{}^\circ \]
  done clear
  C)
  \[180{}^\circ \]
  done clear
  D)
  \[30{}^\circ \]
  done clear
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• question_answer6) A uniform rope of length L, resting on a frictionless horizontal surface, is pulled at one end by a force F. The tension in the rope at a distance I from this end is
  A)
   F                                            
  done clear
  B)
   \[\frac{l}{L}F\]
  done clear
  C)
  \[\frac{L}{l}F\]                                  
  done clear
  D)
  \[\left( 1-\frac{l}{L} \right)F\]
  done clear
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• question_answer7) A bicycle is in motion. The frictional force exerted by the ground on the two wheels acts
  A)
   backwards on the front wheel and forwards on the rear wheel
  done clear
  B)
   forwards on the front wheel and backwards on the rear wheel
  done clear
  C)
   backwards on both the wheel
  done clear
  D)
   forwards on both the wheels
  done clear
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• question_answer8) If the momentum of a body increases by 50%, its kinetic energy will increase by
  A)
   50%                                      
  done clear
  B)
   100%
  done clear
  C)
   125%                                   
  done clear
  D)
   150%
  done clear
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• question_answer9) In which case does the potential energy decrease?
  A)
  On compressing a spring
  done clear
  B)
  On stretching a spring
  done clear
  C)
  On moving a body against gravitational force
  done clear
  D)
   On the rising of an air bubble in water
  done clear
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• question_answer10) A body is moved from rest along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to
  A)
   \[{{t}^{1/2}}\]                                  
  done clear
  B)
   \[{{t}^{3/4}}\]
  done clear
  C)
   \[{{t}^{3/2}}\]                                  
  done clear
  D)
  \[{{t}^{2}}\]
  done clear
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• question_answer11) The root-mean-square velocity for an ideal gas is (where the symbols have their usual meanings)
  A)
  \[{{v}_{rms}}=\sqrt{\frac{3MT}{R}}\]                     
  done clear
  B)
  \[{{v}_{rms}}=\sqrt{\frac{3RT}{M}}\]
  done clear
  C)
  \[{{v}_{rms}}=\sqrt{\frac{3RM}{T}}\]                     
  done clear
  D)
  \[{{v}_{rms}}=\sqrt{3RMT}\]
  done clear
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• question_answer12) The radius of a rotating disc is suddenly reduced to half without any change in its mass. Then its angular velocity will be
  A)
   four times                         
  done clear
  B)
   double
  done clear
  C)
   half                                      
  done clear
  D)
   unchanged
  done clear
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• question_answer13) A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break
  A)
   when the mass is at the highest point of the circle
  done clear
  B)
   when the mass is at the lowest point of the circle
  done clear
  C)
   when the wire is horizontal
  done clear
  D)
   at an angle of cos-1 (1/3) from the upward vertical
  done clear
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• question_answer14) The ratio of the weight of a man in a stationary lift and when it is moving downward with uniform acceleration \[a\] is 3 : 2. The value of \[a\] is (g = acceleration due to gravity of the earth)
  A)
   3/2 g                                    
  done clear
  B)
   g/3
  done clear
  C)
   2/3 g                                    
  done clear
  D)
   g
  done clear
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• question_answer15) The masses and radii of the earth and moon are \[{{M}_{1}},\,{{R}_{1}}\] and \[{{M}_{2}},\,{{R}_{2}}\] respectively. Their centres are distance d apart. The minimum velocity with which a particle of mass m should be projected from a point midway between their centres so that it escapes to infinity is
  A)
  \[\sqrt[2]{\frac{G}{a}({{M}_{1}}+{{M}_{2}})}\]  
  done clear
  B)
  \[\sqrt[2]{\frac{2G}{a}({{M}_{1}}+{{M}_{2}})}\]
  done clear
  C)
  \[\sqrt[2]{\frac{Gm}{a}({{M}_{1}}+{{M}_{2}})}\]              
  done clear
  D)
  \[\sqrt[2]{\frac{Gm({{M}_{1}}+{{M}_{2}})}{d({{R}_{1}}+{{R}_{2}})}}\]
  done clear
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• question_answer16) A geostationary satellite is taken from its orbit to another orbit. If the distance of the second orbit from the centre of the earth is double that of the first orbit, then its time period in the second orbit will be
  A)
   4.8 h                                    
  done clear
  B)
   48\[\sqrt{2}\] h
  done clear
  C)
   48 h                                      
  done clear
  D)
   24 h
  done clear
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• question_answer17) Two wires of the same material have lengths in the ratio 1 : 2 and their radii are in the ratio 1: \[\sqrt{2}\]. If they are streched by applying equal forces, the increase in their lengths will be in the ratio
  A)
   2:\[\sqrt{2}\]                                   
  done clear
  B)
   \[\sqrt{2}\]:2
  done clear
  C)
   1:1                                        
  done clear
  D)
   1 : 2
  done clear
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• question_answer18) The amount of work done in forming a soap film of size \[10cm\times 10cm\] (Surface tension  \[T=3\times {{10}^{-2}}N/m\]) is
  A)
   \[6\times {{10}^{-4}}\text{J}\]                                 
  done clear
  B)
   \[3\times {{10}^{-4}}\text{J}\]
  done clear
  C)
   \[6\times {{10}^{-3}}\text{J}\]                                 
  done clear
  D)
   \[6\times {{10}^{-2}}\text{J}\]
  done clear
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• question_answer19) A number of water droplets each of radius r coalesce to form a bigger drop of radius R. The rise in temperature is
  A)
  \[\frac{3T}{RJ}\]                                              
  done clear
  B)
  \[\frac{3T}{rJ}\]
  done clear
  C)
  \[\frac{3T}{J}\left( \frac{1}{r}+\frac{1}{R} \right)\]                           
  done clear
  D)
  \[\frac{3T}{J}\left( \frac{1}{r}-\frac{1}{R} \right)\]
  done clear
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• question_answer20) Air is filled at \[60{}^\circ C\] in a vessel of open mouth. The vessel is heated to a temperature T so that \[\frac{1}{4}\]th part of air escapes. The value of T is
  A)
  \[80{}^\circ C\]
  done clear
  B)
  \[444{}^\circ C\]
  done clear
  C)
  \[333{}^\circ C\]
  done clear
  D)
  \[171{}^\circ C\]
  done clear
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• question_answer21) The specific heat of a gas
  A)
   has only two values \[{{C}_{P}}\] and \[{{C}_{V}}\]
  done clear
  B)
   has a unique value at a given temperature
  done clear
  C)
   can have any value between 0 and \[\infty \]
  done clear
  D)
   depends upon the mass of the gas
  done clear
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• question_answer22) The pressure of a gas is equal to
  A)
   the total translation kinetic energy of all the molecules in unit volume
  done clear
  B)
   the total kinetic energy of all the molecules in unit volume
  done clear
  C)
   two thirds of the total translational kinetic energy of all the molecules in unit volume
  done clear
  D)
   two-thirds of the total kinetic energy of all the molecules in unit volume
  done clear
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• question_answer23) During the adiabatic expansion of 2 moles of a gas, the internal energy was found to have decreased by 100 J. The work done by the gas in this process is
  A)
   zero                                     
  done clear
  B)
   - 100 J
  done clear
  C)
   200 J                                    
  done clear
  D)
   100 J
  done clear
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• question_answer24) Two samples A and B of a gas, initially at the same  pressure  and  temperature,  are compressed from volume V to V/2 (A isothermally and B adiabatically) the final pressure of A is
  A)
   greater than the final pressure of B
  done clear
  B)
   equal to the final pressure of B
  done clear
  C)
   less than the final pressure of B
  done clear
  D)
   twice the final pressure of B
  done clear
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• question_answer25) When the potential energy of a particle executing simple harmonic motion is one-fourth of its maximum value during the oscillation, its displacement from the equilibrium position in terms of its amplitude \[a\] is
  A)
   \[a\text{/4}\]                                  
  done clear
  B)
   \[a\text{/3}\]
  done clear
  C)
   \[a\text{/2}\]                                  
  done clear
  D)
   \[2a\text{/3}\]
  done clear
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• question_answer26) A wall has two layers A and B, each made of a different material. Both the layers have the same thickness. The thermal conductivity of the material of A is twice that of B. Under thermal   equilibrium,   the   temperature difference across the wall is \[36{}^\circ C\]. The temperature difference across the layer A is
  A)
  \[6{}^\circ C\]
  done clear
  B)
  \[12{}^\circ C\]
  done clear
  C)
  \[18{}^\circ C\]
  done clear
  D)
  \[24{}^\circ C\]
  done clear
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• question_answer27) The temperature of two bodies A and B are respectively \[727{}^\circ C\] and \[327{}^\circ C\]. The ratio of rates of heat radiated by them is
  A)
   727:327                               
  done clear
  B)
   5 : 3
  done clear
  C)
   25 : 9                                    
  done clear
  D)
   625 : 81
  done clear
  View Answer play_arrow

• question_answer28) A body takes T minutes to cool from \[62{}^\circ C\] to \[61{}^\circ C\] when the surrounding temperature is \[30{}^\circ C\]. The time taken by the body to cool from \[46{}^\circ C\] to \[45.5{}^\circ C\] is
  A)
   greater than T minutes
  done clear
  B)
   equal to T minutes
  done clear
  C)
   less than T minutes       
  done clear
  D)
   equal to T/2 minutes
  done clear
  View Answer play_arrow

• question_answer29) 41forks are so arranged that each produces 5 beats/s when sounded with its near fork. If the frequency of last fork is double the frequency of first fork, then the frequencies of the first and last fork are respectively
  A)
   200, 400                              
  done clear
  B)
   205,410
  done clear
  C)
   195, 390                              
  done clear
  D)
   100, 200
  done clear
  View Answer play_arrow

• question_answer30) A motor car blowing a horn of frequency 124  vib/s moves with a velocity 72 km/h towards a tall wall. The frequency of the reflected sound heard by the driver will be                 [velocity of sound in air is 330 m/s]
  A)
   109 vib/s                            
  done clear
  B)
   132 vib/s
  done clear
  C)
   140 vib/s                            
  done clear
  D)
   248 vib/s
  done clear
  View Answer play_arrow

• question_answer31) Young's experiment establishes the fact that
  A)
   light consists of particles
  done clear
  B)
   light consists of waves
  done clear
  C)
   light consists of neither particles nor waves
  done clear
  D)
   fringe width do not depend on the separation of the two slits
  done clear
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• question_answer32) In the context of Doppler effect in light, the term red shift signifies
  A)
   decrease in frequency
  done clear
  B)
   increase in frequency
  done clear
  C)
   decrease in intensity
  done clear
  D)
   increase in intensity
  done clear
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• question_answer33) In a concave mirror experiment, an object is placed at a distance\[{{x}_{1}}\] from the focus and the image is formed at a distance \[{{x}_{2}}\] from the focus. The focal length of the mirror would be
  A)
   \[{{x}_{1}}{{x}_{2}}\]                                    
  done clear
  B)
   \[\sqrt{{{x}_{1}}{{x}_{2}}}\]
  done clear
  C)
   \[\sqrt{{{x}_{1}}/{{x}_{2}}}\]                                     
  done clear
  D)
  \[\frac{{{x}_{1}}+{{x}_{2}}}{2}\]
  done clear
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• question_answer34) Which of the following is a correct relation?
  A)
  \[_{\text{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}{{\text{=}}_{\text{a}}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{w}}}\,\text{ }\!\!\times\!\!\text{ }{{\,}_{\text{r}}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{w}}}\]                
  done clear
  B)
  \[_{\text{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}{{\times }_{\text{a}}}{{\mu }_{w}}\,{{=}_{\text{w}}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{a}}}\]
  done clear
  C)
  \[_{a}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}/{{  }_{r}}{{\mu }_{a}}\,=0\]                        
  done clear
  D)
  \[_{\text{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{\text{r}}}/{{  }_{w}}{{\mu }_{r}}\,{{=}_{a}}{{\text{ }\!\!\mu\!\!\text{ }}_{w}}\]
  done clear
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• question_answer35) The focal length of a thin lens is \[f\] and the diameter of its aperture is d. This makes an image of brightness \[I\]. If the central portion of the aperture be covered upto d/2 diameter by an opaque paper, then the focal length and the brightness of image would respectively be
  A)
   \[f\text{/2}\,\text{and}\,\text{I/2}\]                    
  done clear
  B)
   \[f\,\text{and}\,\text{I/4}\]
  done clear
  C)
   \[f\text{/2}\,\text{and}\,\text{I/4}\]                                    
  done clear
  D)
   \[f\,\text{and}\,3\text{I/4}\]
  done clear
  View Answer play_arrow

• question_answer36) Fraunhofer lines are an example of
  A)
   continuous spectrum
  done clear
  B)
   band spectrum
  done clear
  C)
   emission spectrum
  done clear
  D)
   absorption spectrum
  done clear
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• question_answer37) The reason for shining of air bubble in water is
  A)
   diffraction of light
  done clear
  B)
   dispersion of light
  done clear
  C)
   scattering of light
  done clear
  D)
   total internal reflection of light
  done clear
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• question_answer38) The dispersive powers of glasses of lenses used in an achromatic pair are in the ratio 5:3. If the focal length of the concave lens is 15 cm, then the nature and focal length the other lens would be
  A)
   convex, 9 cm                    
  done clear
  B)
   convex, 9 cm
  done clear
  C)
   convex, 25 cm                 
  done clear
  D)
   convex, 25 cm
  done clear
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• question_answer39) White light is passed through a prism whose angle is \[5{}^\circ \]. If the refractive indices for rays of red and blue colors are respectively 1.64 and 1.66, the angle of deviation between the two colors will be
  A)
   0.1 degree                        
  done clear
  B)
   0.2 degree
  done clear
  C)
   0.3 degree                        
  done clear
  D)
   0.4 degree
  done clear
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• question_answer40) The resolving limit of healthy eye is about
  A)
  \[1'\]
  done clear
  B)
  \[1''\]
  done clear
  C)
  \[1{}^\circ \]
  done clear
  D)
  \[\frac{1}{60}''\]
  done clear
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• question_answer41) While viewing a distant object with a telescope suddenly a housefly sits on objective lens. The correct statement is that
  A)
   housefly will be seen enlarged in image
  done clear
  B)
   housefly will be seen reduced in image
  done clear
  C)
   intensity of image will be decreased
  done clear
  D)
   intensity of image will be increased
  done clear
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• question_answer42) An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm. A real image is formed at a distance of 75 cm from the lens. The size of the image will be
  A)
   4.5cm                                  
  done clear
  B)
   3.0cm
  done clear
  C)
   0.75cm                                
  done clear
  D)
   0.5cm
  done clear
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• question_answer43) Work function of a metal is 2.51 eV. Its threshold frequency is
  A)
   \[5.9\times {{10}^{14}}cycle/s\]              
  done clear
  B)
   \[6.5\times {{10}^{14}}cycle/s\]
  done clear
  C)
   \[9.4\times {{10}^{14}}cycle/s\]              
  done clear
  D)
   \[6.08\times {{10}^{14}}cycle/s\]
  done clear
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• question_answer44) Energy conversion in a photoelectric cell takes place from
  A)
   chemical to electrical
  done clear
  B)
   magnetic to electrical
  done clear
  C)
   optical to electrical
  done clear
  D)
   mechanical to electrical
  done clear
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• question_answer45) The momentum of a photon in an X-ray beam of \[{{10}^{-10}}m\] wavelength is
  A)
   \[1.5\times {{10}^{-23}}kg-m/s\]            
  done clear
  B)
   \[6.6\times {{10}^{-24}}kg-m/s\]
  done clear
  C)
   \[6.6\times {{10}^{-44}}kg-m/s\]            
  done clear
  D)
   \[2.2\times {{10}^{-52}}kg-m/s\]
  done clear
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• question_answer46) The rest energy of an electron is 0.511 MeV The electron is accelerated from rest to a velocity 0.5 c. The change in its energy will be
  A)
   0.026 MeV                        
  done clear
  B)
   0.051 MeV
  done clear
  C)
   0.079 MeV                        
  done clear
  D)
   0.105 MeV
  done clear
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• question_answer47) X-rays from X-ray tube
  A)
   will be monochromatic
  done clear
  B)
   will have all possible wavelengths less than a certain longest wavelength
  done clear
  C)
   will have all possible wavelengths greater than a certain shortest wavelength
  done clear
  D)
   will have all wavelengths between the longest and the shortest wavelength
  done clear
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• question_answer48) X-ray beam of intensity \[{{I}_{0}}\] passes through  absorption plate of thickness d. If absorption coefficient of material of plate is µ, the correct statement regarding the transmitted intensity  \[I\] of X-ray is
  A)
  \[I={{I}_{0}}(1-{{e}^{-\mu d}})\]                               
  done clear
  B)
  \[I={{I}_{0}}{{e}^{-\mu d}}\]
  done clear
  C)
  \[I={{I}_{0}}e(1-{{e}^{-\mu /d}})\]          
  done clear
  D)
  \[I={{I}_{0}}{{e}^{-\mu /d}}\]
  done clear
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• question_answer49) At zero kelvin a piece of germanium
  A)
   becomes semiconductor
  done clear
  B)
   becomes good conductor
  done clear
  C)
   becomes bad conductor
  done clear
  D)
   has maximum conductivity
  done clear
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• question_answer50) Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antimony is added
  A)
   the material obtained will be n-type germanium in which electrons and holes are equal in number
  done clear
  B)
   the material obtained will be p-type germanium
  done clear
  C)
   the material obtained will be n-type  germanium which has more electrons then holes at room temperature
  done clear
  D)
   the material obtained will be n-type germanium which has less electrons than holes at room temperature
  done clear
  View Answer play_arrow

• question_answer51) A semiconductor is cooled from \[T{{  }_{1}}\]K to \[T{{  }_{2}}\]K its resistance
  A)
   will decrease
  done clear
  B)
   will increase
  done clear
  C)
   will first decrease and then increase
  done clear
  D)
   will not change
  done clear
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• question_answer52) In a hydrogen atom an electron moves in a circular orbit of radius \[5.2\times {{10}^{-11}}m\] and produces a magnetic induction of 12.56 T at its nucleus. The current produced by the motion of the electron will be (Given \[{{\mu }_{0}}=4\pi \times {{10}^{-7}}\] Wb/ Am)
  A)
  \[6.53\times {{10}^{-}}\text{A}\]                             
  done clear
  B)
  \[13.25\times {{10}^{-10}}\text{A}\]
  done clear
  C)
  \[9.6\times {{10}^{6}}\text{A}\]                               
  done clear
  D)
  \[1.04\times {{10}^{-3}}\text{A}\]
  done clear
  View Answer play_arrow

• question_answer53) The \[{{K}_{\alpha }}\] line for molybdenum (atomic no. = 42) has a wavelength of \[0.7078\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]. The wavelength of\[{{K}_{\alpha }}\] line of zinc (atomic no. = 30) will be
  A)
  \[1\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  B)
  \[1.388\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  C)
  \[0.3541\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  D)
  \[0.5\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
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• question_answer54) In a hydrogen atom, which of the following electronic transitions would involve the maximum energy change?
  A)
   from n = 2 to n = 1         
  done clear
  B)
   from n = 3 to n = 1
  done clear
  C)
   from n = 4 to n = 2         
  done clear
  D)
   from n = 3 to n = 2
  done clear
  View Answer play_arrow

• question_answer55) In the lowest energy level of hydrogen atom, the electron has the angular momentum
  A)
   \[\text{ }\!\!\pi\!\!\text{ /h}\]                                
  done clear
  B)
  \[\text{h/ }\!\!\pi\!\!\text{ }\]
  done clear
  C)
   \[\text{h/2 }\!\!\pi\!\!\text{ }\]                              
  done clear
  D)
   \[\text{2 }\!\!\pi\!\!\text{ /h}\]
  done clear
  View Answer play_arrow

• question_answer56) In a radioactive decay, neither the atomic number nor the mass number changes. Which of the following would be emitted in the decay process?
  A)
   Proton    
  done clear
  B)
                          Neutron
  done clear
  C)
   Electron                             
  done clear
  D)
   Photon
  done clear
  View Answer play_arrow

• question_answer57) The half-life of a radio isotope is 5 yr. What fraction of this material would decay in 15 yr?
  A)
   1                                            
  done clear
  B)
   ¾
  done clear
  C)
   7/8                                       
  done clear
  D)
   1/8
  done clear
  View Answer play_arrow

• question_answer58) The disintegration constant of a radioactive element is\[\lambda .\]Its half-life and means life are respectively
  A)
  \[1\text{/ }\!\!\lambda\!\!\text{ }\] and In \[\text{2/ }\!\!\lambda\!\!\text{ }\]               
  done clear
  B)
   In \[\text{2/ }\!\!\lambda\!\!\text{ }\] and \[\text{1/ }\!\!\lambda\!\!\text{ }\]
  done clear
  C)
  \[\text{ }\!\!\lambda\!\!\text{ }\] (In 2)and \[\text{1/ }\!\!\lambda\!\!\text{ }\]              
  done clear
  D)
   \[\text{ }\!\!\lambda\!\!\text{ /}\](In 2) and \[\text{1/ }\!\!\lambda\!\!\text{ }\]
  done clear
  View Answer play_arrow

• question_answer59) Magnetic lines of force
  A)
   always intersect
  done clear
  B)
   are always closed
  done clear
  C)
   tend to crowd far away from the poles of a magnet
  done clear
  D)
   do not pass through vacuum
  done clear
  View Answer play_arrow

• question_answer60) Rate of change of torque t with deflection \[\text{ }\!\!\theta\!\!\text{ }\] is maximum for a magnet suspended freely in a uniform magnetic field of induction B, when
  A)
  \[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{\text{0}}^{\text{o}}}\]                           
  done clear
  B)
   \[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{45}^{0}}\]
  done clear
  C)
   \[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{60}^{0}}\]                                   
  done clear
  D)
   \[\text{ }\!\!\theta\!\!\text{ }\,\text{=}\,{{90}^{0}}\]
  done clear
  View Answer play_arrow

• question_answer61) The angle of dip at a place on the earth gives
  A)
   the horizontal component of the earth's magnetic field
  done clear
  B)
   the location of the geographic meridian
  done clear
  C)
   the vertical component of the earth's field
  done clear
  D)
   the direction of the earth's magnetic field
  done clear
  View Answer play_arrow

• question_answer62) The tangent galvanometer, when connected in series with a standard resistance can be used as
  A)
   an ammeter
  done clear
  B)
   a voltmeter
  done clear
  C)
   a wattmeter
  done clear
  D)
   Both an ammeter and a voltmeter
  done clear
  View Answer play_arrow

• question_answer63) In the vibration magnetometer, the magnet kept in the stirrup when disturbed vibrates with a period, given by
  A)
   \[2\pi \sqrt{I/MB}\]                      
  done clear
  B)
   \[2\pi \sqrt{MB/I}\]
  done clear
  C)
  \[2\pi \sqrt{MBI}\]                         
  done clear
  D)
  \[2\pi \sqrt{I/g}\]
  done clear
  View Answer play_arrow

• question_answer64) When the symbols have their usual meaning. An electric dipole is put in north-south direction in a sphere filled with water. Which statement is correct?
  A)
  Electric flux is coming towards sphere
  done clear
  B)
  Electric flux is coming out of sphere
  done clear
  C)
   Electric flux entering into sphere and leaving the sphere are same
  done clear
  D)
   Water does not permit electric flux to enter into sphere
  done clear
  View Answer play_arrow

• question_answer65) Deuteron and \[\alpha \]-particle are put 1 A apart in air, magnitude of intensity of electric field due to deuteron at \[\alpha \]-particle is
  A)
  \[2.88\times {{10}^{11}}\text{N/C}\]                     
  done clear
  B)
  \[1.44\times {{10}^{11}}\text{N/C}\]
  done clear
  C)
  \[5.76\times {{10}^{11}}\text{N/C}\]                     
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer66)   The permittivity and permeability of vacuum are \[{{\varepsilon }_{0}}\] and \[{{\mu }_{0}}\] respectively. The corresponding quantities for a medium are \[\varepsilon \] and\[\mu .\] Refractive index of a medium is
  A)
  \[\sqrt{\frac{\mu \varepsilon }{\mu {{  }_{0}}{{\varepsilon }_{0}}}}\]                   
  done clear
  B)
  \[\frac{\mu {{  }_{0}}{{\varepsilon }_{0}}}{\sqrt{\mu \varepsilon }}\]
  done clear
  C)
  \[\frac{\sqrt{\mu {{  }_{0}}{{\varepsilon }_{0}}}}{\mu   \varepsilon }\]                              
  done clear
  D)
  \[\sqrt{\frac{\mu {{  }_{0}}{{\varepsilon }_{0}}}{\mu   \varepsilon }}\]
  done clear
  View Answer play_arrow

• question_answer67) A force F acts between sodium and chlorine ions  of salt (sodium chloride) when put 1 cm apart in the air. The permittivity of air and dielectric constant of water are \[{{\varepsilon }_{0}}\] and K respectively. When a piece of salt is put in water electrical force acting between sodium and chlorine ion 1 cm apart is
  A)
  \[F\]                                     
  done clear
  B)
  \[FK\text{/}{{\text{ }\!\!\varepsilon\!\!\text{ }}_{\text{0}}}\]
  done clear
  C)
  \[\text{F/K}{{\text{ }\!\!\varepsilon\!\!\text{ }}_{\text{0}}}\]                                   
  done clear
  D)
  \[\text{F/K}\]
  done clear
  View Answer play_arrow

• question_answer68)   The radii of two spheres forming a spherical condenser are 0.5 and 0.6 m. If a medium having dielectric constant 6 is completely filled in between, the capacity of the condenser will be
  A)
  \[3.3\times {{10}^{-10}}\text{F}\]                            
  done clear
  B)
   \[2\times {{10}^{-9}}\text{F}\]
  done clear
  C)
   \[2\text{F}\]                                    
  done clear
  D)
   \[\text{18F}\]
  done clear
  View Answer play_arrow

• question_answer69) A parallel plate capacitor is filled up by a substance of\[{{t}_{1}}\] thickness of dielectric constant \[{{K}_{1}}\] and other substance of \[{{t}_{2}}\] thickness of dielectric constant \[{{K}_{2.}}\] The capacity of this capacitor will be
  A)
  \[{{\varepsilon }_{0}}A/\left( \frac{{{t}_{1}}}{{{K}_{1}}}+\frac{{{t}_{2}}}{{{K}_{2}}} \right)\]          
  done clear
  B)
  \[{{\varepsilon }_{0}}A/\left( \frac{{{K}_{1}}}{{{K}_{2}}}+\frac{{{K}_{2}}}{{{t}_{2}}} \right)\]
  done clear
  C)
  \[{{\varepsilon }_{0}}A/\left( \frac{{{t}_{1}}}{{{K}_{2}}}+\frac{{{t}_{2}}}{{{K}_{1}}} \right)\]          
  done clear
  D)
  \[{{\varepsilon }_{0}}A/\left( \frac{{{K}_{2}}}{{{t}_{1}}}+\frac{{{K}_{1}}}{{{t}_{2}}} \right)\]
  done clear
  View Answer play_arrow

• question_answer70) n identical condensers are joined in parallel and are charged to potential V. Now, they are separated and joined in series. Then, the total energy and potential difference of the combination will be
  A)
   energy remain the same and potential difference is also same
  done clear
  B)
   energy remain the same and potential difference is \[nV\]
  done clear
  C)
   energy increases n times and potential difference remains is \[nV\]
  done clear
  D)
   energy increases n times and potential difference remains same
  done clear
  View Answer play_arrow

• question_answer71) The electromotive force of primary cell is 2 V. When it is short circuited it gives a current of 4 A. Its internal resistance in ohm is
  A)
   0.5                                        
  done clear
  B)
   5.0
  done clear
  C)
   2.0                                        
  done clear
  D)
   8.0
  done clear
  View Answer play_arrow

• question_answer72) A potential differences of V is applied at the ends of a copper wire of length \[l\]and diameter d. On doubling only d, drift velocity
  A)
   becomes two times      
  done clear
  B)
   becomes half
  done clear
  C)
   does not change            
  done clear
  D)
   becomes one-fourth
  done clear
  View Answer play_arrow

• question_answer73) Three equal resistances each of value R. are joined as shown in the figure. The equivalent resistance between M and N is             
  A)
   R                                           
  done clear
  B)
   2R               
  done clear
  C)
   R/2                                       
  done clear
  D)
   R/3
  done clear
  View Answer play_arrow

• question_answer74) In the measurement of a resistance by Wheatstone bridge the known and the unknown resistance are interchanged to neutralize
  A)
   end error
  done clear
  B)
   index error
  done clear
  C)
   error due to thermoelectric effect
  done clear
  D)
   random error
  done clear
  View Answer play_arrow

• question_answer75) A thermoelectric couple is made from copper and iron. At hot junction, current
  A)
   flows from copper towards iron
  done clear
  B)
   flows from iron towards copper
  done clear
  C)
   flow decreases
  done clear
  D)
   flow increases
  done clear
  View Answer play_arrow

• question_answer76) Which of the following is not a correct statement?               
  A)
   Resistivity of electrolytes decreases on increasing temperature
  done clear
  B)
   Resistance of mercury falls on decreasing its temperature
  done clear
  C)
   When joined in series a 40 W bulb glows more than a 60W bulb
  done clear
  D)
   Resistance of 40 W bulb is less than the resistance of 60 W bulb
  done clear
  View Answer play_arrow

• question_answer77) The relation between Farady constant F. electron charge e and Avogadro Number N is
  A)
  \[F=\text{N/e}\]                             
  done clear
  B)
  \[F=\text{Ne}\]
  done clear
  C)
  \[N=F{{\text{e}}^{2}}\]                
  done clear
  D)
  \[F={{N}^{2}}\text{e}\]
  done clear
  View Answer play_arrow

• question_answer78) The voltage V and current \[I\] graph for s conductor at two different temperatures \[{{T}_{1}}\] and \[{{T}_{2}}\] are shown in the figure. The relation between \[{{T}_{1}}\] and \[{{T}_{2}}\] is
  A)
  \[{{T}_{1}}>{{T}_{2}}\]                                  
  done clear
  B)
  \[{{T}_{1}}\approx {{T}_{2}}\]
  done clear
  C)
  \[{{T}_{1}}={{T}_{2}}\]                                  
  done clear
  D)
  \[{{T}_{1}}<{{T}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer79) Two bulbs of 500 W and 200 W are manufactured to operate on 220 V line. The ratio of heat produced in 500 W and 200 W, in two cases, when firstly they are joined in parallel and secondly in series, will be
  A)
   5/2,2/5                               
  done clear
  B)
   5/2,5/2
  done clear
  C)
   2/5, 5/2                              
  done clear
  D)
   2/5, 2/5
  done clear
  View Answer play_arrow

• question_answer80) In the circuit as shown in the figure, the heat produced by \[6\,\,\Omega \] resistance due to current flowing in it is 60cal/s. The heat generated across\[3\,\,\Omega \] resistance per second will be
  A)
   30cal                                    
  done clear
  B)
   60cal
  done clear
  C)
   100 cal                                 
  done clear
  D)
   120 cal
  done clear
  View Answer play_arrow

• question_answer81) The value of Faraday constant is
  A)
  \[9.65\times {{10}^{4}}C\]                           
  done clear
  B)
  \[9.65\times {{10}^{4}}\text{J}\]
  done clear
  C)
  \[6.03\times {{10}^{27}}\text{J}\]                            
  done clear
  D)
  \[1.6\times {{10}^{-19}}C\]
  done clear
  View Answer play_arrow

• question_answer82)   A proton and a deuteron both having the same kinetic energy, enter perpendicularly into a uniform magnetic field B. For motion of proton and deuteron on circular path of radius \[{{r}_{P}}\] and \[{{r}_{d}}\] respectively, the correct statement is
  A)
  \[{{r}_{d}}={{r}_{P}}\sqrt{2}\]                   
  done clear
  B)
  \[{{r}_{d}}\frac{{{r}_{P}}}{\sqrt{2}}\]
  done clear
  C)
  \[{{r}_{d}}={{r}_{P}}\]                                   
  done clear
  D)
  \[{{r}_{d}}=2{{r}_{P}}\]
  done clear
  View Answer play_arrow

• question_answer83) A short bar magnet placed with its axis at \[30{}^\circ \] with a uniform external magnetic field of 0.16 T experiences a torque of magnitude 0.032 J. The magnetic moment of the bar magnet will be
  A)
   0.23 J/T                               
  done clear
  B)
   0.40 J/T
  done clear
  C)
   0.80 J/T                               
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer84) Four wires each of length 2.0 n are bent into four loops P, Q, R and S and then suspended into uniform magnetic field. Same current is passed in each loop. Which statement is correct?
  A)
   Couple on loop P will be the highest
  done clear
  B)
   Couple on loop Q will be the highest
  done clear
  C)
   Couple on loop R will be the highest
  done clear
  D)
   Couple on loop S will be the highest
  done clear
  View Answer play_arrow

• question_answer85) Force acting between two point charges (+q and + q) distance r apart in the air is F. One charge is rotated about the other charge on a circle of radius r. The work done will be
  A)
   \[F\times r\]                                    
  done clear
  B)
   \[F\times 2\pi r\]
  done clear
  C)
   \[F\times 2r\]       
  done clear
  D)
   zero              
  done clear
  View Answer play_arrow

• question_answer86) A current \[I\] is flowing in a rectangular loop. It is put close to a wire (long and straight) such that wire is parallel to one of the arms of loop and lies in the plane of loop. If as shown in the figure, a steady current \[I\] flows in the wire, the loop
  A)
   will rotate about an axis parallel to wire
  done clear
  B)
   will move away from the wire
  done clear
  C)
   will move towards the wire
  done clear
  D)
   will remain steady
  done clear
  View Answer play_arrow

• question_answer87) A current of 1 A is passed through a straight wire of length 2 m. The magnetic field at a point in air at a distance of 3 m from either end of wire and lying on the axis of wire will be
  A)
   \[\frac{{{\mu }_{0}}}{2\pi }\]                                     
  done clear
  B)
  \[\frac{{{\mu }_{0}}}{4\pi }\]
  done clear
  C)
  \[\frac{{{\mu }_{0}}}{8\pi }\]                                      
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer88) 5 cm long solenoid having \[10\,\Omega \] resistance and 5 mH inductance is joined to a 10 V battery. At steady state the current through the solenoid (in ampere) will be
  A)
   5                                            
  done clear
  B)
   1
  done clear
  C)
   2                                            
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer89) A conducting wire is moving towards right in a magnetic field B. The direction of induced current in the wire is shown in the figure. The direction of magnetic field will be
  A)
   in the plane of paper pointing towards right
  done clear
  B)
   in the plane of paper pointing towards left
  done clear
  C)
   perpendicular to the plane of paper and downwards
  done clear
  D)
                                                                                                                                                                                                   perpendicular to the plane of paper and upwards
  done clear
  View Answer play_arrow

• question_answer90) The north pole of a bar magnet is moved swiftly downward towards a closed coil and then second time it is raised upwards slowly. The magnitude and direction of the induced currents in the two cases will be
  A)

  First case	Second case
  Low value clockwise	Higher value anticlockwise

  done clear
  B)

  First case	Second case
  Low value clockwise	Equal value anticlockwise

  done clear
  C)

  First case	Second case
  Higher value clockwise	low value anticlockwise

  done clear
  D)

  First case	Second case
  Higher value anticlockwise	Low value clockwise

  done clear
  View Answer play_arrow

• question_answer91) "The direction of the inducedcurrentina circuit is always such that it opposes the cause due to which it is produced." This law is named as
  A)
   Ohm's Law                        
  done clear
  B)
   Lenz's Law
  done clear
  C)
   Kirchhoffs Law
  done clear
  D)
   Faraday's Law
  done clear
  View Answer play_arrow

• question_answer92) At a place the value of horizontal component of the earth's magnetic field H is \[3\times {{10}^{-5}}Wb/{{m}^{2}}.\] A metallic rod AB of length 2m placed in east-west direction, having the end A towards east, falls vertically downward with a constant velocity of 50 m/s. Which end of the rod becomes positively charged and what is the value of induced potential difference between the two ends?
  A)
   \[EndA,3\times {{10}^{-3}}mV\]              
  done clear
  B)
   End A, 3 mV
  done clear
  C)
   \[End\text{ }B,3\times {{10}^{-3}}mV\]               
  done clear
  D)
   End B, 3 mV
  done clear
  View Answer play_arrow

• question_answer93) A circular coil of radius 5 cm has 500 turns of a wire. The approximate value of the coefficient of self-induction of the coil will be
  A)
   25 mH                                 
  done clear
  B)
   \[25\times {{10}^{-3}}mH\]
  done clear
  C)
   \[50\times {{10}^{-3}}mH\]                       
  done clear
  D)
   \[50\times {{10}^{-3}}mH\]
  done clear
  View Answer play_arrow

• question_answer94) An emf of 100 mV is induced in a coil when the current in another nearby coil becomes 10 A from zero in 0.1 s. The coefficient of mutual induction between the two coils will be
  A)
   1mH                                     
  done clear
  B)
   10 mH
  done clear
  C)
   100 mH                               
  done clear
  D)
   1000 mH
  done clear
  View Answer play_arrow

• question_answer95) A light source approaches the observer with velocity 0.8 c. The Doppler shift for the light of wavelength \[5500\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] is
  A)
  \[5500\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  B)
  \[1833\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  C)
  \[4400\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  D)
  \[7333\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  View Answer play_arrow

• question_answer96) Two plates are 2 cm apart, a potential difference of 10 V is applied between them, the electric field between the plates is
  A)
   20N/C                                 
  done clear
  B)
   500 N/C
  done clear
  C)
   5 N/C                                   
  done clear
  D)
   250 N/C
  done clear
  View Answer play_arrow

• question_answer97) A 120 V AC source is connected across a pure inductor of inductance 0.70 H. If the frequency of the source is 60 Hz, the current passing through the inductor is
  A)
   4.55 A                                  
  done clear
  B)
   0.355 A
  done clear
  C)
   0.455 A                               
  done clear
  D)
   3.55 A
  done clear
  View Answer play_arrow

• question_answer98) An AC generator produced an output voltage e = 170 sin 377 t volt, where t is in second. The frequency of AC voltage is
  A)
   50 Hz                                   
  done clear
  B)
   110 Hz
  done clear
  C)
   60 Hz                                   
  done clear
  D)
   230 Hz
  done clear
  View Answer play_arrow

• question_answer99) In L-R circuit, for the case of increasing current, the magnitude of current can be calculated by using the formula
  A)
  \[I={{I}_{0}}{{e}^{-Rt/L}}\]                          
  done clear
  B)
  \[I={{I}_{0}}(1-{{e}^{-Rt/L}}\]
  done clear
  C)
  \[I={{I}_{0}}(1-{{e}^{Rt/L}})\]    
  done clear
  D)
  \[I={{I}_{0}}{{e}^{Rt/L}}\]
  done clear
  View Answer play_arrow

• question_answer100) The efficiency of transformer is very high because
  A)
   there is no moving part in a transformer
  done clear
  B)
   it produces very high voltage
  done clear
  C)
   it produces very low voltage
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer101) Which is correct statement about proton?
  A)
   Proton is nucleus of deuterium
  done clear
  B)
   Proton is alpha particle
  done clear
  C)
   proton is ionized hydrogen molecule
  done clear
  D)
   Proton is ionized hydrogen
  done clear
  View Answer play_arrow

• question_answer102) In a given atom no two electrons can have the same values of all the quantum numbers. This is called
  A)
   Hund's rule
  done clear
  B)
   Aufbau principle
  done clear
  C)
   Uncertainty principle
  done clear
  D)
   Pauli's exclusion principle
  done clear
  View Answer play_arrow

• question_answer103) Magnetic quantum number specifies
  A)
   size of orbitals
  done clear
  B)
   shape of orbitals
  done clear
  C)
   orientation of orbitals
  done clear
  D)
   nuclear stability
  done clear
  View Answer play_arrow

• question_answer104) The energy of an electron in nth  orbit of hydrogen atom is
  A)
   \[\frac{13.6}{{{n}^{4}}}eV\]                       
  done clear
  B)
   \[\frac{13.6}{{{n}^{3}}}eV\]
  done clear
  C)
   \[-\frac{13.6}{{{n}^{2}}}eV\]                     
  done clear
  D)
   \[\frac{13.6}{n}eV\]
  done clear
  View Answer play_arrow

• question_answer105) If wavelength of photon is \[2.2\times {{10}^{-11}}m,\] \[h=6.6\times {{10}^{-34}}Js,\] then momentum of photon is
  A)
   \[3\times {{10}^{-23}}kg\,m{{s}^{-1}}\]
  done clear
  B)
   \[3.33\times {{10}^{22}}kg\,m{{s}^{-1}}\]
  done clear
  C)
   \[1.452\times {{10}^{-44}}\,kg\,m{{s}^{-1}}\]
  done clear
  D)
   \[6.89\times {{10}^{43}}kg\,m{{s}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer106) The bond order of \[NO\]molecule is
  A)
   \[1.5\]                                 
  done clear
  B)
   \[2.0\]
  done clear
  C)
   \[2.5\]                                 
  done clear
  D)
   \[3.0\]
  done clear
  View Answer play_arrow

• question_answer107) The bond angle in water \[({{H}_{2}}O)\] molecule is
  A)
   \[{{109}^{o}}28'\]                           
  done clear
  B)
   \[{{180}^{o}}\]
  done clear
  C)
   \[{{90}^{o}}\]                                   
  done clear
  D)
   \[{{105}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer108) The triple bond between N atoms of nitrogen molecule \[(N\equiv N)\] consists of
  A)
   three \[\sigma \]-bond
  done clear
  B)
   two \[\sigma \]-bonds and one \[\pi \]-bond
  done clear
  C)
   one \[\sigma \]-bond and two \[\pi \]-bonds
  done clear
  D)
   three \[\pi \]-bonds
  done clear
  View Answer play_arrow

• question_answer109) According to VSEPR theory the most probable shape of the molecule having 4 electron pairs in the outer shell of the central atom is
  A)
   linear                                   
  done clear
  B)
   tetrahedral
  done clear
  C)
   hexahedral       
  done clear
  D)
   octahedral
  done clear
  View Answer play_arrow

• question_answer110) The number of  \[\sigma \] bonds in o-xylene is
  A)
   \[6\]                                    
  done clear
  B)
   \[9\]
  done clear
  C)
   \[12\]                                  
  done clear
  D)
   \[18\]
  done clear
  View Answer play_arrow

• question_answer111) \[50\text{ }mL\]\[10\text{ }N\] \[{{H}_{2}}S{{O}_{4}},\]\[25\text{ }mL\]\[12N\] \[HCl\]and \[40\text{ }mL\]\[5N\]\[HN{{O}_{3}}\] were mixed together and the volume of the mixture was made \[1000\text{ }mL\]by adding water. The normality of the resultant solution will be
  A)
   \[1\text{ }N\]                                  
  done clear
  B)
   \[\text{2 }N\]
  done clear
  C)
   \[\text{3 }N\]                                  
  done clear
  D)
   \[\text{4 }N\]
  done clear
  View Answer play_arrow

• question_answer112) Which of the following will have the highest boiling point at 1 atm pressure?
  A)
   \[0.1\,M\,\,NaCl\]
  done clear
  B)
   \[0.1\text{ }M\text{ }sucrose\]
  done clear
  C)
   \[0.1\text{ }M\text{ }BaC{{l}_{2}}\]
  done clear
  D)
   \[0.1\text{ }M\text{ }glucose\]
  done clear
  View Answer play_arrow

• question_answer113) What will be the molality of a solution having \[18\text{ }g\]of glucose (mol. wt.\[=180\]) dissolved in \[500g\]of water?
  A)
   \[1m\]                                
  done clear
  B)
   \[0.5m\]
  done clear
  C)
   \[0.2m\]                             
  done clear
  D)
   \[2m\]
  done clear
  View Answer play_arrow

• question_answer114) An aqueous solution freezes at \[-{{0.186}^{o}}C\] \[({{k}_{f}}={{1.86}^{o}};\,{{k}_{b}}={{0.512}^{o}})\]What is the elevation in boiling point?
  A)
   \[0.186\]                            
  done clear
  B)
   \[0.512\]
  done clear
  C)
   \[\frac{0.512}{1.86}\]                   
  done clear
  D)
   \[0.0512\]
  done clear
  View Answer play_arrow

• question_answer115) Which one of the following is a colligative property?
  A)
   Surface tension
  done clear
  B)
   Osmotic pressure
  done clear
  C)
   Viscosity       
  done clear
  D)
   Refractive index
  done clear
  View Answer play_arrow

• question_answer116) How many kinds of space lattices are possible in a crystal?
  A)
   \[23\]                                  
  done clear
  B)
   \[7\]
  done clear
  C)
   \[230\]                                
  done clear
  D)
   \[14\]
  done clear
  View Answer play_arrow

• question_answer117) Diamond is an example of
  A)
   covalent solid
  done clear
  B)
   electrovalent solid
  done clear
  C)
   solid with hydrogen bonding
  done clear
  D)
   glass
  done clear
  View Answer play_arrow

• question_answer118) What is Y in the following nuclear reaction? \[_{7}{{H}^{14}}{{+}_{1}}{{H}^{1}}{{\xrightarrow{{}}}_{8}}{{O}^{15}}+'X'\]
  A)
   \[_{0}{{n}^{1}}\]                             
  done clear
  B)
   \[_{-1}{{e}^{0}}\]
  done clear
  C)
   \[_{+1}{{e}^{0}}\]                                          
  done clear
  D)
   Energy
  done clear
  View Answer play_arrow

• question_answer119) The end product of \[(4n+2)\] radioactive disintegration series is
  A)
   \[_{82}^{208}Pb\]                          
  done clear
  B)
   \[_{82}^{206}Pb\]
  done clear
  C)
   \[_{82}^{207}Pb\]                          
  done clear
  D)
   \[_{83}^{210}Bi\]
  done clear
  View Answer play_arrow

• question_answer120) The radioactive isotope which is used to estimate the age of ancient geological formations is
  A)
   \[{{O}^{8}}\]                                    
  done clear
  B)
   \[P{{b}^{212}}\]
  done clear
  C)
   \[F{{e}^{59}}\]                                
  done clear
  D)
   \[_{6}{{C}^{14}}\]
  done clear
  View Answer play_arrow

• question_answer121) The half-life period of a radioactive element is \[140\]days. In \[560\,days\]a sample of this element would be reduced to ......of its initial mass.
  A)
   \[1/2\]                                
  done clear
  B)
   \[1/4\]
  done clear
  C)
   \[1/8\]                                
  done clear
  D)
   \[1/16\]
  done clear
  View Answer play_arrow

• question_answer122) For the homogeneous gas reaction, \[4N{{H}_{3}}+5{{O}_{2}}\rightleftharpoons 4NO+6{{H}_{2}}O\] the equilibrium constant \[{{K}_{c}},\] has the dimension of
  A)
   \[conc{{.}^{+10}}\]
  done clear
  B)
   \[conc{{.}^{+1}}\]
  done clear
  C)
   \[conc{{.}^{-1}}\]
  done clear
  D)
   it is dimensionless
  done clear
  View Answer play_arrow

• question_answer123) Formation of the \[S{{O}_{3}}\] takes place according to the reaction \[2S{{O}_{2}}+{{O}_{2}}\rightleftharpoons 2S{{O}_{3}};\]    \[\Delta H=-45.2kcal\] Which of the following factors favours the formation of \[S{{O}_{3}}\]?
  A)
   Increase in temperature
  done clear
  B)
   Increase in pressure
  done clear
  C)
   Removal of oxygen
  done clear
  D)
   Increase in volume
  done clear
  View Answer play_arrow

• question_answer124) In the equilibrium reaction, \[2HI(g)\rightleftharpoons {{H}_{2}}+{{I}_{2}}\] which of the following expressions is true?
  A)
   \[{{K}_{p}}={{K}_{c}}\]
  done clear
  B)
   \[{{K}_{c}}=2{{K}_{p}}\]
  done clear
  C)
   \[{{K}_{p}}>{{K}_{c}}\]
  done clear
  D)
   \[{{K}_{c}}={{K}_{p}}{{(RT)}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer125) \[{{K}_{p}}/{{K}_{c}}\]for the reaction,\[CO(g)+\frac{1}{2}{{O}_{2}}(g)\rightleftharpoons C{{O}_{2}}(g)\] is
  A)
   \[1\]                                    
  done clear
  B)
   \[RT\]
  done clear
  C)
   \[\frac{1}{\sqrt{RT}}\]                  
  done clear
  D)
   \[{{(RT)}^{1/2}}\]
  done clear
  View Answer play_arrow

• question_answer126) A monoprotic acid in a \[0.1\text{ }M\]solution ionises to \[0.001%\]. Its ionisation constant is
  A)
   \[1.0\times {{10}^{-3}}\]
  done clear
  B)
   \[1.0\times {{10}^{-6}}\]
  done clear
  C)
   \[1.0\times {{10}^{-8}}\]    
  done clear
  D)
   \[1.0\times {{10}^{-11}}\]
  done clear
  View Answer play_arrow

• question_answer127) The pH of a \[{{10}^{-8}}\] molar solution of \[HCl\]in water  is
  A)
   \[8\]             
  done clear
  B)
   \[-8\]
  done clear
  C)
   between \[7\] and \[8\]
  done clear
  D)
   between \[6\] and \[7\]
  done clear
  View Answer play_arrow

• question_answer128) Which of the following salts when dissolved in  water hydrolyse?
  A)
   \[NaCl\]                             
  done clear
  B)
   \[N{{H}_{4}}Cl\]
  done clear
  C)
   \[KCl\]                                
  done clear
  D)
   \[N{{a}_{2}}S{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer129) What is the correct representation for the solubility product of \[Sn{{S}_{2}}\]?
  A)
   \[[S{{n}^{2+}}]\,{{[{{S}^{2-}}]}^{2}}\]
  done clear
  B)
   \[[S{{n}^{4+}}]\,{{[{{S}^{2-}}]}^{2}}\]
  done clear
  C)
   \[[S{{n}^{2+}}]\,[2{{S}^{2-}}]\]
  done clear
  D)
   \[[S{{n}^{2+}}]\,{{[2{{S}^{2-}}]}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer130) If  \[100\text{ }mL\] of \[1N\] hydrochloric acid were mixed with \[100\text{ }mL\] of \[1M\]sodium hydroxide, the solution will be
  A)
   acidic                                   
  done clear
  B)
   basic
  done clear
  C)
   neutral                               
  done clear
  D)
   slightly acidic
  done clear
  View Answer play_arrow

• question_answer131) Which of the following expressions represents  the first law of thermodynamics?
  A)
   \[q=\Delta E-W\]
  done clear
  B)
   \[\Delta E=q-W\]
  done clear
  C)
   \[\Delta E=q+W\]
  done clear
  D)
   \[\Delta E=q+pdV\]
  done clear
  View Answer play_arrow

• question_answer132) In a spontaneous process the entropy of the system and its surroundings
  A)
   equals zero
  done clear
  B)
   decreases
  done clear
  C)
   increases
  done clear
  D)
   remains constant
  done clear
  View Answer play_arrow

• question_answer133) For the first order reaction with the constant k, which expression gives the half-life period? (Initial concentration = a)
  A)
   \[\frac{\ln \,2}{k}\]                        
  done clear
  B)
   \[\frac{1}{k\times a}\]
  done clear
  C)
   \[\frac{0.693}{k\times a}\]                         
  done clear
  D)
   \[\frac{3}{2k{{a}^{2}}}\]
  done clear
  View Answer play_arrow

• question_answer134) The rate constant is given by the equation \[k=PZ{{e}^{-E/RT}},\] which factor should register a decrease for the reaction to proceed more rapidly?
  A)
   \[T\]                                    
  done clear
  B)
   \[Z\]
  done clear
  C)
   \[E\]                                    
  done clear
  D)
   \[P\]
  done clear
  View Answer play_arrow

• question_answer135) For a reaction of the type \[A+B\to \]products, it is observed that doubling the concentration of A causes the reaction rate to be four times as great, but doubling the amount of B does not affect the rate. The rate equation is
  A)
  \[Rate=k[A]\,[B]\]
  done clear
  B)
   \[Rate=\frac{k}{4}{{[A]}^{2}}\]
  done clear
  C)
   \[Rate=k{{[A]}^{2}}[B]\]
  done clear
  D)
   \[Rate=k{{[A]}^{2}}{{[B]}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer136) Oxidation number of carbon in \[C{{H}_{3}}-Cl\]is
  A)
   \[-3\]                                   
  done clear
  B)
   \[-2\]
  done clear
  C)
   \[-1\]                                   
  done clear
  D)
   \[0\]
  done clear
  View Answer play_arrow

• question_answer137) Which one of the following metals will not form an amalgam?
  A)
   Gold                                    
  done clear
  B)
   Silver
  done clear
  C)
   Zinc                                      
  done clear
  D)
   Iron
  done clear
  View Answer play_arrow

• question_answer138) Incorrect statement regarding rusting is
  A)
   metallic iron is oxidised to \[F{{e}^{3+}}\]ions
  done clear
  B)
   metallic iron is reduced to \[F{{e}^{2-}}\] ions
  done clear
  C)
   oxygen gas is reduced to oxide ion
  done clear
  D)
   yellowish-brown product is formed
  done clear
  View Answer play_arrow

• question_answer139) Which will be the proper alternative in place of A in the following equation? \[2F{{e}^{3+}}(aq)+S{{n}^{2+}}(aq)\xrightarrow{{}}2F{{e}^{2+}}(aq)+A\]
  A)
   \[S{{n}^{4+}}\]                                
  done clear
  B)
   \[S{{n}^{3+}}\]
  done clear
  C)
   \[S{{n}^{2+}}\]                                
  done clear
  D)
   \[S{{n}^{0}}\]
  done clear
  View Answer play_arrow

• question_answer140) \[{{E}^{o}}=\frac{RT}{nF}\] In\[{{K}_{eq}},\] this equation is called    
  A)
   Gibb's equation                       
  done clear
  B)
   Gibbs's-Helmholtz equation
  done clear
  C)
   Nernst equation
  done clear
  D)
   van der Waals' equation
  done clear
  View Answer play_arrow

• question_answer141) Which of the following acts both as oxidising and reducing agent?
  A)
   \[HN{{O}_{3}}\]                              
  done clear
  B)
   \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
  done clear
  C)
   \[KMn{{O}_{4}}\]                           
  done clear
  D)
   \[{{H}_{2}}{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer142) The oxidation number of oxygen in ozone is
  A)
   \[-3\]                                   
  done clear
  B)
   \[-2\]
  done clear
  C)
   0 (zero)                              
  done clear
  D)
   \[+3\]
  done clear
  View Answer play_arrow

• question_answer143) If an iron wire is placed in a solution of copper sulphate
  A)
   copper will precipitate out
  done clear
  B)
   iron will dissolve and precipitate out thereafter
  done clear
  C)
   iron and copper both will go into solution
  done clear
  D)
   no reaction will take place
  done clear
  View Answer play_arrow

• question_answer144) To which of the following, the mass of an element deposited at an electrode is directly proportional?
  A)
   Atomic weight 
  done clear
  B)
   Equivalent weight
  done clear
  C)
   Molecular weight
  done clear
  D)
   Atomic number
  done clear
  View Answer play_arrow

• question_answer145) From the solution of which of the following one faraday of electricity will liberate one gram atom of metal?
  A)
   \[NaCl\]                             
  done clear
  B)
   \[BaC{{l}_{2}}\]
  done clear
  C)
   \[CuS{{O}_{4}}\]                             
  done clear
  D)
   \[AlC{{l}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer146) In which of the following, oxygen has an oxidation state of \[+2\]?
  A)
   \[{{H}_{2}}{{O}_{2}}\]                                  
  done clear
  B)
   \[C{{O}_{2}}\]
  done clear
  C)
   \[{{H}_{2}}O\]                                 
  done clear
  D)
   \[O{{F}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer147) Point out the false statement.
  A)
   Brownian movement and Tyndall effect is shown by colloidal systems
  done clear
  B)
   Gold number is a measure of the protective power of a lyophilic colloid
  done clear
  C)
   The colloidal solution of a liquid in liquid is called gel
  done clear
  D)
   Hardy-SchuIze rule is related with coagulation
  done clear
  View Answer play_arrow

• question_answer148) Which one of the following will have the highest coagulating power for a ferric hydroxide sol?
  A)
   \[NaCl\]                             
  done clear
  B)
   \[BaC{{l}_{2}}\]
  done clear
  C)
   \[{{K}_{2}}Cr{{O}_{4}}\]              
  done clear
  D)
   \[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
  done clear
  View Answer play_arrow

• question_answer149) Which of the following statement is false?
  A)
   A catalyst is specific in its action
  done clear
  B)
   A very small amount of the catalyst alters the rate of a reaction
  done clear
  C)
   The number of free valencies on the surface of the catalyst increases on subdivision
  done clear
  D)
   \[Ni\] is used as catalyst in the manufacture of ammonia
  done clear
  View Answer play_arrow

• question_answer150) The natural materials from which an element can be extracted economically are called
  A)
   ores                                     
  done clear
  B)
   minerals
  done clear
  C)
   Gangue                              
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer151) When a metal is to be extracted from its ore, if the gangue associated with the ore is silica, then
  A)
   An acidic flux is needed
  done clear
  B)
   a basic flux is needed
  done clear
  C)
   Both acidic and basic flux are needed
  done clear
  D)
   Neither of them is needed
  done clear
  View Answer play_arrow

• question_answer152) An example of an oxide ore is
  A)
   Bauxite                               
  done clear
  B)
   malachite
  done clear
  C)
   Zinc blende       
  done clear
  D)
   feldspar
  done clear
  View Answer play_arrow

• question_answer153) In the Hoopes process, for refining of aluminium, the fused materials form three different layers and they remain separated during electrolysis also, this is because
  A)
   the upper layer is kept attracted by the cathode and the lower layer is kept attracted by the anode
  done clear
  B)
   There is special arrangement in the cell to keep the layers separate
  done clear
  C)
   the three layers have different densities
  done clear
  D)
   The three layers are maintained at different temperatures
  done clear
  View Answer play_arrow

• question_answer154) In galvanisation, iron surface is coated with
  A)
   tin                                         
  done clear
  B)
   chromium
  done clear
  C)
   zinc                                      
  done clear
  D)
   nickel
  done clear
  View Answer play_arrow

• question_answer155) In order to refine "Blister copper" it is melted in a furnace and is stirred with green logs of wood. The purpose is
  A)
   To expel the dissolved gases in blister copper
  done clear
  B)
   To bring the impurities to surface and oxidize them
  done clear
  C)
   To increase the carbon content of copper
  done clear
  D)
   To reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood
  done clear
  View Answer play_arrow

• question_answer156) On going from right to left in a period in the periodic table, the electronegativity of the elements
  A)
   Increases
  done clear
  B)
   Decreases
  done clear
  C)
   Remains unchanged
  done clear
  D)
   Decreases first then increases
  done clear
  View Answer play_arrow

• question_answer157) In the periodic table, the element with atomic number 16 will be placed in the group
  A)
   third                                    
  done clear
  B)
   fourth
  done clear
  C)
   fifth                                     
  done clear
  D)
   sixth
  done clear
  View Answer play_arrow

• question_answer158) Metals belonging to the same group in the periodic table are
  A)
   Magnesium and sodium
  done clear
  B)
   Magnesium and copper
  done clear
  C)
   Magnesium and barium
  done clear
  D)
   Magnesium and potassium
  done clear
  View Answer play_arrow

• question_answer159) The electronic configuration in the outermost  shell of halogens is
  A)
  \[{{s}^{2}}{{p}^{4}}\]                                     
  done clear
  B)
   \[{{s}^{2}}{{p}^{5}}\]              
  done clear
  C)
   \[{{s}^{2}}{{p}^{3}}\]                                    
  done clear
  D)
   \[{{s}^{2}}{{p}^{6}}\]         
  done clear
  View Answer play_arrow

• question_answer160) The ionic radii  \[{{N}^{3-}},\] \[{{O}^{2-}},\] \[{{F}^{-}}\]and \[N{{a}^{+}}\]follow the  order
  A)
   \[{{N}^{3-}}>{{O}^{2-}}>{{F}^{-}}>N{{a}^{+}}\]
  done clear
  B)
   \[N{{a}^{3-}}>N{{a}^{+}}>{{O}^{2-}}>{{F}^{-}}\]
  done clear
  C)
   \[N{{a}^{+}}>{{O}^{2-}}>N{{a}^{3-}}>{{F}^{-}}\]
  done clear
  D)
   \[{{O}^{2-}}>{{F}^{-}}>N{{a}^{+}}>N{{a}^{3-}}\]
  done clear
  View Answer play_arrow

• question_answer161) Which   of   the   following   electronic configurations is of a transition element?
  A)
   \[~1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}4{{s}^{2}}\]
  done clear
  B)
   \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{10}}4{{s}^{2}}4{{p}^{1}}\]
  done clear
  C)
   \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{p}^{6}}3{{d}^{10}}4{{s}^{2}}4{{p}^{6}}\]
  done clear
  D)
   \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{2}}4{{s}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer162) Nessler's reagent is
  A)
   \[K{{H}_{g}}{{I}_{4}}\]      
  done clear
  B)
   \[{{K}_{2}}Hg{{I}_{4}}+N{{H}_{4}}OH\]
  done clear
  C)
   \[{{K}_{2}}Hg{{I}_{4}}+KOH\]
  done clear
  D)
   \[KHg{{I}_{4}}+N{{H}_{4}}OH\]
  done clear
  View Answer play_arrow

• question_answer163) Very dilute nitric acid reacts with zinc to form zinc nitrate and
  A)
   Ammonium nitrate
  done clear
  B)
   \[N{{O}_{2}}\]
  done clear
  C)
   \[NO\]
  done clear
  D)
   \[{{N}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer164) By passing  \[{{H}_{2}}S\] gas in acidified\[KMn{{O}_{4}}\]. solution, we get
  A)
  \[{{K}_{2}}S\]                                    
  done clear
  B)
  \[S\]
  done clear
  C)
  \[{{K}_{2}}S{{O}_{3}}\]                                 
  done clear
  D)
  \[Mn{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer165) If molecular weight of \[KMn{{O}_{4}}\] is ?M? then its equivalent weight in acidic medium would be
  A)
  \[M\]                                   
  done clear
  B)
  \[M/2\]
  done clear
  C)
  \[M/5\]                               
  done clear
  D)
  \[M/4\]
  done clear
  View Answer play_arrow

• question_answer166) \[Xe{{F}_{6}}\] on hydrolysis gives
  A)
  \[Xe{{O}_{3}}\]                                
  done clear
  B)
  \[XeO\]
  done clear
  C)
  \[Xe{{O}_{2}}\]                                
  done clear
  D)
  \[Xe\]
  done clear
  View Answer play_arrow

• question_answer167) Which one of the following should be most stable?
  A)
  \[H_{2}^{+}\]                                    
  done clear
  B)
  \[{{H}^{+}}\]
  done clear
  C)
  \[{{H}^{-}}\]                                      
  done clear
  D)
  \[H\]
  done clear
  View Answer play_arrow

• question_answer168) Molecular formula of Glauber's salt is
  A)
   \[MgS{{O}_{4}},7{{H}_{2}}O\]
  done clear
  B)
   \[CuS{{O}_{4}},5{{H}_{2}}O\]
  done clear
  C)
   \[FeS{{O}_{4}}.7{{H}_{2}}O\]  
  done clear
  D)
   \[N{{a}_{2}}S{{O}_{4}}.10{{H}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer169) The metal that is extracted from sea water is
  A)
   \[Mg\]                                
  done clear
  B)
   \[Ca\]
  done clear
  C)
   \[Fe\]                                  
  done clear
  D)
   \[Ni\]
  done clear
  View Answer play_arrow

• question_answer170) Which of the following oxides reacts with \[HCl\] and\[NaOH\]?
  A)
   \[CaO\]                              
  done clear
  B)
  \[ZnO\]
  done clear
  C)
   \[{{N}_{2}}{{O}_{5}}\]                                  
  done clear
  D)
  \[C{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer171) The most basic element is
  A)
   fluorine                              
  done clear
  B)
   iodine
  done clear
  C)
   chlorine                              
  done clear
  D)
   bromine
  done clear
  View Answer play_arrow

• question_answer172) An example of a double salt is
  A)
   Bleaching powder
  done clear
  B)
   Hypo
  done clear
  C)
   \[{{K}_{4}}{{[Fe(CN)]}_{6}}\]
  done clear
  D)
   Potash alum
  done clear
  View Answer play_arrow

• question_answer173) Precipitate of \[AgCl\] dissolves in \[N{{H}_{4}}OH\] due to formation of a complex
  A)
   \[[Ag{{(N{{H}_{4}})}_{2}}]Cl\]
  done clear
  B)
   \[[Ag{{(N{{H}_{4}})}_{3}}]Cl\]
  done clear
  C)
   \[[Ag{{(N{{H}_{3}})}_{2}}]Cl\]
  done clear
  D)
   \[[Ag{{(N{{H}_{3}})}_{2}}OH]\]
  done clear
  View Answer play_arrow

• question_answer174) The number of ions per mole of a complex \[[CoC{{l}_{2}}.{{(N{{H}_{3}})}_{4}}]Cl\] in aqueous solution will be
  A)
   nine                                     
  done clear
  B)
   four
  done clear
  C)
   three                                   
  done clear
  D)
   two
  done clear
  View Answer play_arrow

• question_answer175) \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]N{{O}_{2}}\] and \[[Co{{(N{{H}_{3}})}_{4}}ClN{{O}_{2}}]Cl\]  are isomers of which type?
  A)
   Geometrical     
  done clear
  B)
   Optical
  done clear
  C)
   Linkage                               
  done clear
  D)
   Ionization
  done clear
  View Answer play_arrow

• question_answer176) Which one of the following sulphides is only completely precipitated when the acidic solution is made dilute?
  A)
  \[HgS\]                                
  done clear
  B)
  \[PbS\]
  done clear
  C)
  \[CdS\]                                
  done clear
  D)
  \[CuS\]
  done clear
  View Answer play_arrow

• question_answer177) Which of the following combines with \[F{{e}^{2+}}\] ions to form a brown complex?
  A)
  \[{{N}_{2}}O\]                                  
  done clear
  B)
  \[NO\]
  done clear
  C)
  \[{{N}_{2}}{{O}_{3}}\]                                   
  done clear
  D)
  \[{{N}_{2}}{{O}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer178) Which of the following substances consists of only one element?
  A)
   Marble                               
  done clear
  B)
   Sand
  done clear
  C)
   Diamond                            
  done clear
  D)
   Glass
  done clear
  View Answer play_arrow

• question_answer179) An organic compound with \[C=40%\]and \[H=6.7%\]will have the empirical formula
  A)
  \[C{{H}_{2}}\]                                   
  done clear
  B)
  \[C{{H}_{2}}O\]
  done clear
  C)
  \[{{C}_{3}}{{H}_{6}}{{O}_{3}}\]                                  
  done clear
  D)
  \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer180) The IUPAC name of the compound is \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H-C{{H}_{2}}-C{{H}_{2}}-Cl\]
  A)
   1-chloro-3-methylbutane
  done clear
  B)
   2-methyl-4-chlorobutane
  done clear
  C)
   2-methyl-1-chlorobutane
  done clear
  D)
   1-chloropentane
  done clear
  View Answer play_arrow

• question_answer181) An organic compound will show optical isomerism if
  A)
   Four groups attached to C atom are different
  done clear
  B)
   Three groups attached to C atom are different
  done clear
  C)
   Two groups attached to C atom are different
  done clear
  D)
   All the groups attached to C atom are same
  done clear
  View Answer play_arrow

• question_answer182) The arrangement of hydrogen atoms around carbon in the methane molecule is
  A)
   Triangular     
  done clear
  B)
   Square planar
  done clear
  C)
   Tetrahedral    
  done clear
  D)
   Hexagonal
  done clear
  View Answer play_arrow

• question_answer183) The reaction between an Alkyl halide and sodium metal in dry ether is called
  A)
   Clemmensen reduction
  done clear
  B)
   Kolbe's reaction
  done clear
  C)
   Wurtz reaction
  done clear
  D)
   Cannizaro's reaction
  done clear
  View Answer play_arrow

• question_answer184) Ethylene may be obtained by dehydration of which of the following with concentrated \[{{H}_{2}}S{{O}_{4}}\] at\[160-{{170}^{o}}C\]?
  A)
   \[{{C}_{2}}{{H}_{5}}OH\]       
  done clear
  B)
   \[C{{H}_{3}}OH\]
  done clear
  C)
   \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\]
  done clear
  D)
   \[{{(C{{H}_{3}})}_{2}}CHC{{H}_{2}}OH\]
  done clear
  View Answer play_arrow

• question_answer185) Ethylene reacts with bromine to form
  A)
   \[Br-C{{H}_{2}}-C{{H}_{3}}\]
  done clear
  B)
   \[C{{H}_{3}}-C-B{{r}_{3}}\]
  done clear
  C)
   \[Br-C{{H}_{2}}-C{{H}_{2}}-Br\]
  done clear
  D)
   \[CHB{{r}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer186) The shape of methane molecule is
  A)
   Tetrahedral    
  done clear
  B)
   Triangular
  done clear
  C)
   Planar         
  done clear
  D)
   Octahedral
  done clear
  View Answer play_arrow

• question_answer187) When chloroform is left open in light and air, it forms
  A)
   Methylene chloride
  done clear
  B)
   Formic acid
  done clear
  C)
   Carbon tetrachloride
  done clear
  D)
   Phosgene
  done clear
  View Answer play_arrow

• question_answer188) Distinction is made between ethyl alcohol and methyl alcohol by
  A)
   Chloroform test
  done clear
  B)
   Victor Meyer test
  done clear
  C)
   Rate of esterification
  done clear
  D)
   Iodoform test
  done clear
  View Answer play_arrow

• question_answer189) Chloroform on reduction with zinc and \[HCl\] forms
  A)
   Formic acid     
  done clear
  B)
   Chloropicrin
  done clear
  C)
   Methyl chloride
  done clear
  D)
   Phosgene
  done clear
  View Answer play_arrow

• question_answer190) From which of the following tertiary butyl alcohol is obtained by the action of methyl magnesium iodide?
  A)
   \[HCHO\]
  done clear
  B)
   \[C{{H}_{3}}CHO\]
  done clear
  C)
   \[C{{H}_{3}}COC{{H}_{3}}\]
  done clear
  D)
   \[C{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer191) For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of a saturated carboxylic acid is subjected to
  A)
   Hydrolysis      
  done clear
  B)
   Oxidation
  done clear
  C)
   Hydrogenation 
  done clear
  D)
   Electrolysis
  done clear
  View Answer play_arrow

• question_answer192) If formaldehyde and \[KOH\]are heated, then we get
  A)
   Acetylene      
  done clear
  B)
   Methane
  done clear
  C)
   Methyl alcohol 
  done clear
  D)
   Ethyl formate
  done clear
  View Answer play_arrow

• question_answer193) Which of the following reagent reacts differently with \[HCHO,\]\[C{{H}_{3}}CHO\] and\[C{{H}_{3}}COC{{H}_{3}}\]?
  A)
  \[HCN\]                               
  done clear
  B)
  \[N{{H}_{2}}N{{H}_{2}}\]
  done clear
  C)
  \[N{{H}_{2}}OH\]            
  done clear
  D)
  \[N{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer194) Identify the product C in the series\[C{{H}_{3}}CN\xrightarrow{Na/{{C}_{2}}{{H}_{5}}OH}A\xrightarrow{HN{{O}_{2}}}B\]\[\xrightarrow{\begin{smallmatrix}  Tollen's \\  reagent \end{smallmatrix}}C\]
  A)
  \[C{{H}_{3}}COOH\]  
  done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}NHOH\]
  done clear
  C)
  \[C{{H}_{3}}CON{{H}_{2}}\]
  done clear
  D)
  \[C{{H}_{3}}CHO\]
  done clear
  View Answer play_arrow

• question_answer195) Lower carboxylic acid are soluble in-water due to
  A)
   Low molecular weight
  done clear
  B)
   Hydrogen bonding
  done clear
  C)
   Dissociation into ions
  done clear
  D)
   Easy hydrolysis
  done clear
  View Answer play_arrow

• question_answer196) Ethyl acetate reacts with \[C{{H}_{3}}MgBr\]to form
  A)
   Secondary alcohol
  done clear
  B)
   Tertiary alcohol
  done clear
  C)
   Primary alcohol and acid
  done clear
  D)
   Acid
  done clear
  View Answer play_arrow

• question_answer197) Which is used for the formation of nylon 66?
  A)
   Sulphur hexafluoride
  done clear
  B)
   Adipic acid
  done clear
  C)
   Sulphurous acid
  done clear
  D)
   Phthalic acid
  done clear
  View Answer play_arrow

• question_answer198) Which of the following statements is false in the context of enzyme?
  A)
   Temperature affects their functioning
  done clear
  B)
   pH affects their functioning
  done clear
  C)
   They always increase activation energy
  done clear
  D)
   Their reactions are specific
  done clear
  View Answer play_arrow

• question_answer199) Oils and fats together are called
  A)
   enzymes                            
  done clear
  B)
   soaps
  done clear
  C)
   polymer                             
  done clear
  D)
   lipids
  done clear
  View Answer play_arrow

• question_answer200) The secondary structure of proteins is due to
  A)
   Peptide bond
  done clear
  B)
   Hydrogen bond
  done clear
  C)
   van der Waals' forces
  done clear
  D)
   Ionic bond
  done clear
  View Answer play_arrow

• question_answer201) Whose secretion forms the peari?
  A)
   Prismatic layer
  done clear
  B)
   Columnar epithelial cells of mantle
  done clear
  C)
   Ciliated epithelial cells of mantle
  done clear
  D)
   Connective tissue of mantle
  done clear
  View Answer play_arrow

• question_answer202) Striped muscles are present in
  A)
   lungs                                   
  done clear
  B)
   gallbladder
  done clear
  C)
   blood vessels                   
  done clear
  D)
   limb muscles
  done clear
  View Answer play_arrow

• question_answer203)  The stored food material found in muscles is
  A)
   protein                               
  done clear
  B)
   glycogen
  done clear
  C)
   lipid                                      
  done clear
  D)
   phosphogen
  done clear
  View Answer play_arrow

• question_answer204) Striped muscles are
  A)
   syncytial                             
  done clear
  B)
   uninucleate
  done clear
  C)
   binucleate                         
  done clear
  D)
   anucleate
  done clear
  View Answer play_arrow

• question_answer205) The main function of tendon is
  A)
   to join two bones
  done clear
  B)
   to join two muscles
  done clear
  C)
   to join muscles and bones
  done clear
  D)
   to join muscles and nerves
  done clear
  View Answer play_arrow

• question_answer206) Nails are formed by
  A)
   bones                                 
  done clear
  B)
   chitin
  done clear
  C)
   cartilage                             
  done clear
  D)
   keratin
  done clear
  View Answer play_arrow

• question_answer207) In our body, the blood bank is
  A)
   red bone marrow          
  done clear
  B)
   spleen
  done clear
  C)
   liver                                     
  done clear
  D)
   heart
  done clear
  View Answer play_arrow

• question_answer208) What type of poison is ethylene dichloride?
  A)
   Stomach poison              
  done clear
  B)
   Contact poison
  done clear
  C)
   Fumigant                           
  done clear
  D)
   Biological control
  done clear
  View Answer play_arrow

• question_answer209) Vocal cords are situated at
  A)
   pharynx                             
  done clear
  B)
   larynx
  done clear
  C)
   glottis                                  
  done clear
  D)
   bronchial tube
  done clear
  View Answer play_arrow

• question_answer210) Cutaneous glands are
  A)
   gastric glands  
  done clear
  B)
   sebaceous glands
  done clear
  C)
   thyroid gland   
  done clear
  D)
   thymus gland
  done clear
  View Answer play_arrow

• question_answer211) Desmosome is the modification of
  A)
   Golgi bodies
  done clear
  B)
   endoplasmic membrane
  done clear
  C)
   plasma membrane
  done clear
  D)
   ER-nucleus complex
  done clear
  View Answer play_arrow

• question_answer212) Bilirubin and biliverd in are present in
  A)
   pancreatic juice              
  done clear
  B)
   saliva
  done clear
  C)
   bile juice                            
  done clear
  D)
   intestinal juice
  done clear
  View Answer play_arrow

• question_answer213) Enzyme 'renin' is secreted by
  A)
   cells of stomach
  done clear
  B)
   cells of intestine
  done clear
  C)
   the cortical cells of kidney
  done clear
  D)
   the cells of juxtaglomerular apparatus of kidney
  done clear
  View Answer play_arrow

• question_answer214) Dental formula of man is
  A)
   \[\frac{2123}{2123}\]                                    
  done clear
  B)
  \[\frac{1223}{1223}\]
  done clear
  C)
  \[\frac{2132}{2132}\]                                     
  done clear
  D)
  \[\frac{2213}{2213}\]
  done clear
  View Answer play_arrow

• question_answer215) Muscles of alimentary canal are chiefly
  A)
   striated and neurogenic
  done clear
  B)
   un striated and neurogenic
  done clear
  C)
   striated and myogenic
  done clear
  D)
   un striated and myogenic
  done clear
  View Answer play_arrow

• question_answer216) What is the total vital capacity of lungs in man?
  A)
   500 mL                                
  done clear
  B)
   2,000 mL
  done clear
  C)
   4,600 mL                            
  done clear
  D)
   5,800 mL
  done clear
  View Answer play_arrow

• question_answer217) Loop of Henie is meant for absorption of
  A)
   potassium                         
  done clear
  B)
   glucose
  done clear
  C)
   water                                  
  done clear
  D)
   \[C{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer218) In muscular contraction
  A)
   ATP breaks                       
  done clear
  B)
   ATP is formed
  done clear
  C)
   GTP breaks                       
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer219) pH of human blood is
  A)
   8.4                                        
  done clear
  B)
   7.4
  done clear
  C)
   6.4                                        
  done clear
  D)
   5.4
  done clear
  View Answer play_arrow

• question_answer220) Oxygen is transported by
  A)
   blood plasma  
  done clear
  B)
   leucocytes
  done clear
  C)
   RBC                                      
  done clear
  D)
   thrombocytes
  done clear
  View Answer play_arrow

• question_answer221) Lymph is colourless because
  A)
   WBCs are absent            
  done clear
  B)
   WBCs are present
  done clear
  C)
   Haemoglobin is absent                
  done clear
  D)
   RBCs are absent
  done clear
  View Answer play_arrow

• question_answer222) Lymph (nodes) glands forms
  A)
   hormones                         
  done clear
  B)
   lymph
  done clear
  C)
   antigens                             
  done clear
  D)
   antibodies
  done clear
  View Answer play_arrow

• question_answer223) In human beings, the function of spleen is
  A)
   to assist kidneys
  done clear
  B)
   to control blood pressure
  done clear
  C)
   to assist liver
  done clear
  D)
   to produce blood
  done clear
  View Answer play_arrow

• question_answer224) Bowman's capsule is part of
  A)
   uriniferous tubule         
  done clear
  B)
   renal artery
  done clear
  C)
   renal portal vein             
  done clear
  D)
   ureter
  done clear
  View Answer play_arrow

• question_answer225) Filtration takes place in
  A)
   Malpighian capsule       
  done clear
  B)
   Bowman's capsule
  done clear
  C)
   glomerulus                       
  done clear
  D)
   collecting tubule
  done clear
  View Answer play_arrow

• question_answer226) Main function of cerebellum is
  A)
   balancing                           
  done clear
  B)
   to see
  done clear
  C)
   to hear                               
  done clear
  D)
   remembering
  done clear
  View Answer play_arrow

• question_answer227) Third ventricle is present in
  A)
   heart                                   
  done clear
  B)
   brain
  done clear
  C)
   kidney                                
  done clear
  D)
   liver
  done clear
  View Answer play_arrow

• question_answer228) The centre for sense of smell in brain is
  A)
   cerebellum                       
  done clear
  B)
   cerebrum
  done clear
  C)
   olfactory lobes                
  done clear
  D)
   midbrain
  done clear
  View Answer play_arrow

• question_answer229) The nerve related with diaphragm is
  A)
   vagus                                  
  done clear
  B)
   phrenic
  done clear
  C)
   trigeminal                          
  done clear
  D)
   glossopharyngeal
  done clear
  View Answer play_arrow

• question_answer230) Cowper's gland is present in
  A)
   cockroach                          
  done clear
  B)
   rabbit
  done clear
  C)
   earthworm                       
  done clear
  D)
   frog
  done clear
  View Answer play_arrow

• question_answer231) Monoestrous animals are those which have
  A)
   one menses each month
  done clear
  B)
   one evularion each month
  done clear
  C)
   one egg
  done clear
  D)
   one breeding season in the year
  done clear
  View Answer play_arrow

• question_answer232) For ovulation in reflex ovulators
  A)
   coitus is not necessary
  done clear
  B)
   coitus is necessary
  done clear
  C)
   plenty of food is necessary
  done clear
  D)
   plenty of food is not necessary
  done clear
  View Answer play_arrow

• question_answer233) In sexually reproducing animals, the union of male and female gamete forms a cell which is called
  A)
   ovarian cell                       
  done clear
  B)
   oocyte
  done clear
  C)
   zygote                                
  done clear
  D)
   Graafian follicle
  done clear
  View Answer play_arrow

• question_answer234) Fertilization occurs in
  A)
   ovary                                   
  done clear
  B)
   fallopian tube
  done clear
  C)
   uterus                                 
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer235) Quadriceps and gastrocnemius muscles lie in
  A)
   hands                                  
  done clear
  B)
   legs
  done clear
  C)
   shoulder                            
  done clear
  D)
   wrist
  done clear
  View Answer play_arrow

• question_answer236) The emergency hormone is
  A)
   thyroxin                             
  done clear
  B)
   adrenalin
  done clear
  C)
   insulin                                 
  done clear
  D)
   progesterone
  done clear
  View Answer play_arrow

• question_answer237) In a sperm, the mitochondria occur
  A)
   in tail                                   
  done clear
  B)
   in acrosome
  done clear
  C)
   in middle piece               
  done clear
  D)
   in head
  done clear
  View Answer play_arrow

• question_answer238) Life-span of human RBC is
  A)
   120 days                             
  done clear
  B)
   90 days
  done clear
  C)
   2-3 days                             
  done clear
  D)
   20 days
  done clear
  View Answer play_arrow

• question_answer239) Only rods are present in the eyes of one of the following animal
  A)
   pigeon                                
  done clear
  B)
   squirrel
  done clear
  C)
   fowl                                     
  done clear
  D)
   owl
  done clear
  View Answer play_arrow

• question_answer240) Pharynx and middle ear are interconnected by
  A)
   tympanic canal                
  done clear
  B)
   eustachian canal
  done clear
  C)
   cochlear canal                  
  done clear
  D)
   vestibular canal
  done clear
  View Answer play_arrow

• question_answer241) Proprioceptors refers to the ailment of
  A)
   chemicals
  done clear
  B)
   temperature
  done clear
  C)
   taste
  done clear
  D)
  change in the internal environment of the body
  done clear
  View Answer play_arrow

• question_answer242) From outer to inside the sequence of three bones present in the middle ear of mammals is
  A)
   incus, malleus and stapes
  done clear
  B)
   malleus, incus and stapes
  done clear
  C)
   malleus, stapes and incus
  done clear
  D)
   stapes, malleus and incus
  done clear
  View Answer play_arrow

• question_answer243) How many kinds of cells are found in islets Langerhans?
  A)
   1                                            
  done clear
  B)
   2
  done clear
  C)
   3                                            
  done clear
  D)
   4
  done clear
  View Answer play_arrow

• question_answer244) Diabetes insipidus is under the control of
  A)
   All dosterone                   
  done clear
  B)
   ADH
  done clear
  C)
   ACTH                                   
  done clear
  D)
   TSH
  done clear
  View Answer play_arrow

• question_answer245) FSH and LH hormones together are called
  A)
   emergency
  done clear
  B)
   gonadotropic hormones
  done clear
  C)
   neurohormones
  done clear
  D)
   outstress hormones
  done clear
  View Answer play_arrow

• question_answer246) Parathormone deficiency in man causes
  A)
   hypercalcemia                 
  done clear
  B)
   hypocalcemia
  done clear
  C)
   goiter                                  
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer247) Gorilla like man with large heads and protruding jaws, is produced due to
  A)
   over secretion of thyroxin
  done clear
  B)
   over secretion growth hormone since maturity
  done clear
  C)
   excess of vitamin-'C' in diet
  done clear
  D)
   excess secretion of TSH
  done clear
  View Answer play_arrow

• question_answer248) Which one controls the secretion of estrogen
  A)
   HCG                                     
  done clear
  B)
   Progesterone
  done clear
  C)
   LH                                         
  done clear
  D)
   FSH
  done clear
  View Answer play_arrow

• question_answer249) At cellular level, GH affects growth by controlling die production of
  A)
   rRNA                                   
  done clear
  B)
   t-RNA
  done clear
  C)
   mRNA                                 
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer250) Which of the following vitamins is essential for DNA synthesis and cell division ?
  A)
   Vitamin-A                          
  done clear
  B)
   Vitamin-D
  done clear
  C)
   Folic acid                            
  done clear
  D)
   Vitamin-K
  done clear
  View Answer play_arrow

• question_answer251) Marasmum disease is caused due to
  A)
   protein deficiency         
  done clear
  B)
   obesity
  done clear
  C)
   dwarfism                           
  done clear
  D)
   deficiency of vitamins
  done clear
  View Answer play_arrow

• question_answer252) The brain develops from
  A)
   ectoderm                          
  done clear
  B)
   mesoderm
  done clear
  C)
   endoderm                        
  done clear
  D)
   meso-endoderm
  done clear
  View Answer play_arrow

• question_answer253) The acrosome plays important role in
  A)
   motility of sperm
  done clear
  B)
   penetration of ovum by sperm
  done clear
  C)
   providing energy to sperm
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer254) The eggs of placental mammals are described as
  A)
   microlecithal   
  done clear
  B)
   telolecithal
  done clear
  C)
   centrolecithal                  
  done clear
  D)
   macrolecithal
  done clear
  View Answer play_arrow

• question_answer255) Oogenesis is the process for the formation of
  A)
   red blood cells                 
  done clear
  B)
   sperms
  done clear
  C)
   ova                                       
  done clear
  D)
   sperms and ova
  done clear
  View Answer play_arrow

• question_answer256) The third phase in the development of mammal is
  A)
   cleavage                            
  done clear
  B)
   gastrulation
  done clear
  C)
   gametogenesis               
  done clear
  D)
   fertilization
  done clear
  View Answer play_arrow

• question_answer257) During ageing, collagen present in intercellular spaces becomes
  A)
   Destroyed                         
  done clear
  B)
   Impremeable and rigid
  done clear
  C)
   More elastic
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer258) The theory of ageing holds that ageing is due to
  A)
   random mutation in DNA of somatic cells
  done clear
  B)
   increased cross-linkage of collagen and other proteins
  done clear
  C)
   cumulative result of damage to tissues by free radicals
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer259) If mother has blood group B, father has A group, the offspring will be of
  A)
   A group                              
  done clear
  B)
   O group
  done clear
  C)
   Any of the group            
  done clear
  D)
   AB group
  done clear
  View Answer play_arrow

• question_answer260) Erythroblastosis foetalis occurs when
  A)
   husband is \[R{{h}^{-}}\] and wife \[R{{h}^{-}}\]
  done clear
  B)
   wife is \[R{{h}^{-}}\]and husband \[R{{h}^{-}}\]
  done clear
  C)
   wife is \[R{{h}^{-}}\]and husband \[R{{h}^{+}}\]
  done clear
  D)
   wife is \[R{{h}^{-}}\]and husband \[R{{h}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer261) Match List \[\text{I}\] with List \[\text{II}\] and select the correct answer using the codes given below

  	List \[\text{I}\] (Inheritable disease)		List\[\text{II}\] (Symptoms)
  (A)	Achondroplasia	1.	Blood coagulation delayed due to absence of factor IX
  (B)	Cystinuria	2.	Darkness due to short limb bones, head is normal
  (C)	Epilepsy	3.	Periodic convulsions and unconsciousness
  (D)	Christmas disease	4.	Renal stone formation due to excessive excretion of cytine in urine

  Codes:
  A)
  A-1         A-2         A-3         A-4
  done clear
  B)
  B-2         B-4         B-3         B-1
  done clear
  C)
  C-4         C-3         C-2         C-1
  done clear
  D)
  D-3         D-4         D-1         D-2
  done clear
  View Answer play_arrow

• question_answer262) The frequency of mutant gene in a population is expected to increase if that gene is
  A)
   dominant                          
  done clear
  B)
   recessive
  done clear
  C)
   sex linked                          
  done clear
  D)
   favourably selected
  done clear
  View Answer play_arrow

• question_answer263) Abzymes are
  A)
   abnormal enzymes
  done clear
  B)
   enzymes act on antibodies
  done clear
  C)
   antibodies act as enzymes
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer264) Whereas the number of chromosomes is reduced to half in first reduction division of meiosis, then what is the need for second mitotic division?
  A)
   For the  segregation of replicated chromosomes
  done clear
  B)
   For  equal  distribution of haploid chromosomes
  done clear
  C)
   For the formation of four gametes
  done clear
  D)
   For equal distribution of genes on chromosomes
  done clear
  View Answer play_arrow

• question_answer265) During systole
  A)
   auricles    and   ventricles   contract simultaneously
  done clear
  B)
   auricles and ventricles contract separately
  done clear
  C)
   only auricles contract
  done clear
  D)
   only ventricles contract
  done clear
  View Answer play_arrow

• question_answer266) Hybridoma technology was developed by
  A)
   Taggart; 1982
  done clear
  B)
   Prie and Saxton; 1987
  done clear
  C)
   Vitella et al; 1982
  done clear
  D)
   Kohler and Milstein; 1982
  done clear
  View Answer play_arrow

• question_answer267) In F2 generation, quantitative inheritance 1:4: 6 : 4 : 1 is obtained instead of
  A)
   8 : 6 : 4 : 1           
  done clear
  B)
   7 : 4 :1: 4
  done clear
  C)
   9 : 3 : 3 : 1                           
  done clear
  D)
   6 : 6 : 4 : 7
  done clear
  View Answer play_arrow

• question_answer268) Acromion process is found in rabbit in
  A)
   pectoral girdle
  done clear
  B)
   femur
  done clear
  C)
   vertebral column           
  done clear
  D)
   pelvic girdle
  done clear
  View Answer play_arrow

• question_answer269) The most, commonly used enzyme for polymerase chain reaction is
  A)
  DNA polymerase\[\text{-II}\]   
  done clear
  B)
  Reverse transcriptase
  done clear
  C)
   Klenow fragment
  done clear
  D)
   Taq polymerase
  done clear
  View Answer play_arrow

• question_answer270) In humans, sex determination of the offspring is decided by the
  A)
  sex chromosome of mother
  done clear
  B)
  sex chromosome of father
  done clear
  C)
  size of ovum
  done clear
  D)
  size of sperm
  done clear
  View Answer play_arrow

• question_answer271) If somatic cells of a human male contain single Barr body, the genetic composition of the person would be
  A)
   XYY                                       
  done clear
  B)
   XXY
  done clear
  C)
   XO                                        
  done clear
  D)
   XXXY
  done clear
  View Answer play_arrow

• question_answer272) The main cause of paralysis is
  A)
   some defect in muscles
  done clear
  B)
   complete destruction of sensory nerves
  done clear
  C)
   complete destruction of motor nerves
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer273) Sex ratio in a species indicates the numerical relation between the number of
  A)
   male and female producing gametes
  done clear
  B)
   blacks and whites
  done clear
  C)
   unisexual and bisexual
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer274) Systema naturae is concerned with
  A)
   solar system
  done clear
  B)
   ecosystem
  done clear
  C)
   classification of plants and animals
  done clear
  D)
   natural selection
  done clear
  View Answer play_arrow

• question_answer275) Phylogeny tells about
  A)
  life history of animals
  done clear
  B)
  group of phyla
  done clear
  C)
  evolutionary history of a species from its ancestors
  done clear
  D)
  castes of flies
  done clear
  View Answer play_arrow

• question_answer276) Which of the following classes has largest number of animals?
  A)
   Mammalia                         
  done clear
  B)
   Pisces
  done clear
  C)
   Insecta                               
  done clear
  D)
   Reptilia
  done clear
  View Answer play_arrow

• question_answer277) Cray fish is a
  A)
   crustacean animal          
  done clear
  B)
   edible fish
  done clear
  C)
   poisonous fish                 
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer278) Which of the following is not found in vertebrates?
  A)
   Bilateral symmetry        
  done clear
  B)
   Gill opening
  done clear
  C)
   Body scales                       
  done clear
  D)
   Cnidoblasts
  done clear
  View Answer play_arrow

• question_answer279) A species defined as "the group of actually or potentially inter-breeding natural population producing fertile offspring and reproductive isolated from other groups" The above statement is given by
  A)
   Carolus Linnaeus            
  done clear
  B)
   Mayr
  done clear
  C)
   J B Lamarck                       
  done clear
  D)
   Charles Darwin
  done clear
  View Answer play_arrow

• question_answer280) Origin of life took place in/on
  A)
   water                                  
  done clear
  B)
   air
  done clear
  C)
   mountains                        
  done clear
  D)
   land
  done clear
  View Answer play_arrow

• question_answer281) Homologous organs are
  A)
   similar in origin                
  done clear
  B)
   similar in function
  done clear
  C)
   similar in development
  done clear
  D)
   similar in behavior
  done clear
  View Answer play_arrow

• question_answer282) Vestigial organs are those organs, which are
  A)
   characteristic of birds
  done clear
  B)
   not of much use today
  done clear
  C)
   helpful in locomotion
  done clear
  D)
   common
  done clear
  View Answer play_arrow

• question_answer283) Lamarckian theory deals with
  A)
   acquired characters      
  done clear
  B)
   germplasm
  done clear
  C)
   struggle for existence  
  done clear
  D)
   mutation
  done clear
  View Answer play_arrow

• question_answer284) A species is produced by loss or disappearance of a few characters founds in parent. It is termed as
  A)
   progressive species
  done clear
  B)
   retrogressive species
  done clear
  C)
   successive species
  done clear
  D)
   digressive species
  done clear
  View Answer play_arrow

• question_answer285) Isinglass, a type of byproduct of fish industry is principally used for
  A)
   feeding catle, pigs and poultry
  done clear
  B)
   preparation of paints and varnishes
  done clear
  C)
   clarification of vinegar, wines and beer
  done clear
  D)
   production of insulin
  done clear
  View Answer play_arrow

• question_answer286) Which one of the following combination is generally recommended for composite fish farming in India?
  A)
   Caria, Cyprinus, Clarias
  done clear
  B)
   Caria, Labeo, Cirrhinus
  done clear
  C)
   Cirrhinus, Cyprinus, Channa
  done clear
  D)
   Clarias, Chanos, Cyprinus
  done clear
  View Answer play_arrow

• question_answer287) The indigenous adult fish, which may be used most effectively for the biological control of mosquitoes is
  A)
   Aplocheilus                       
  done clear
  B)
   Gambusia
  done clear
  C)
   Legistes                              
  done clear
  D)
   Caria
  done clear
  View Answer play_arrow

• question_answer288) The disease 'Oriental sore' is caused by
  A)
   bacteria                              
  done clear
  B)
   virus
  done clear
  C)
   Protozoa                            
  done clear
  D)
   fungus
  done clear
  View Answer play_arrow

• question_answer289) The carrier of Trypanosoma in man is
  A)
   house fly                           
  done clear
  B)
   mosquito
  done clear
  C)
   honey bee                        
  done clear
  D)
   tse tse fly
  done clear
  View Answer play_arrow

• question_answer290) The carrier of virus causing human yellow fever is
  A)
   mosquito                           
  done clear
  B)
   bug
  done clear
  C)
   louse                                   
  done clear
  D)
   beetle
  done clear
  View Answer play_arrow

• question_answer291) Which of the following is the cancerous state of blood?
  A)
   Chloremia                         
  done clear
  B)
   Leukaemia
  done clear
  C)
   Uremia                               
  done clear
  D)
   Proteinemia
  done clear
  View Answer play_arrow

• question_answer292) Against, which of the following does interferon act?
  A)
  Bacteria                               
  done clear
  B)
  Virus
  done clear
  C)
   Fungus                               
  done clear
  D)
   Snake venom
  done clear
  View Answer play_arrow

• question_answer293) Which of the following is a sexually transmitted disease?
  A)
   Malaria                               
  done clear
  B)
   Syphilis
  done clear
  C)
   Goiter                                 
  done clear
  D)
   Tuberculosis
  done clear
  View Answer play_arrow

• question_answer294) Jaundice is caused by
  A)
   contaminated water
  done clear
  B)
   pork
  done clear
  C)
   excessive sugar
  done clear
  D)
   excessive eating of Curcuma
  done clear
  View Answer play_arrow

• question_answer295) AIDS can be transmitted by
  A)
   blood circulation             
  done clear
  B)
   handshake
  done clear
  C)
   courtship                           
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer296) Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons which cause
  A)
   reduction in oxygen transport
  done clear
  B)
   increase in blood pressure
  done clear
  C)
   cancer
  done clear
  D)
   retardation of growth of foetus
  done clear
  View Answer play_arrow

• question_answer297) Alcohol addiction is harmful because it causes
  A)
   protein depositions in liver
  done clear
  B)
   deposition of extra fat in liver
  done clear
  C)
   rise in blood sugar level
  done clear
  D)
   cancer
  done clear
  View Answer play_arrow

• question_answer298) Dudhawa national park is located in
  A)
   Madhya Pradesh            
  done clear
  B)
   Himachal Pradesh
  done clear
  C)
   Arunachal Pradesh        
  done clear
  D)
   Uttar Pradesh
  done clear
  View Answer play_arrow

• question_answer299) BHC and DDT belong to which class of pesticides?
  A)
   Organophosphates       
  done clear
  B)
   Organochlorines
  done clear
  C)
   Carbonates                       
  done clear
  D)
   Triazines
  done clear
  View Answer play_arrow

• question_answer300) All chordates at one or the other stage have
  A)
   pharyngeal gill slits
  done clear
  B)
   vertebral column
  done clear
  C)
   two pairs of pentadacyle limb
  done clear
  D)
   a movable jaw
  done clear
  View Answer play_arrow

• question_answer301) Which is not character of mitosis?
  A)
   Leptotene                         
  done clear
  B)
   Zygotene
  done clear
  C)
   Pachytene                        
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer302) Who called the living matter of the cell as protoplasm?
  A)
   Purkinje                             
  done clear
  B)
   Virchow
  done clear
  C)
   Hooke                                 
  done clear
  D)
   Khorana
  done clear
  View Answer play_arrow

• question_answer303) How many types of cells are known?
  A)
   One                                     
  done clear
  B)
   Two
  done clear
  C)
   Four                                     
  done clear
  D)
   Five
  done clear
  View Answer play_arrow

• question_answer304) In which, mitosis does not occur?
  A)
   Green algae                     
  done clear
  B)
   Fungi
  done clear
  C)
   Bacteria                              
  done clear
  D)
   higher plants
  done clear
  View Answer play_arrow

• question_answer305) A mature plant cell has
  A)
   cell wall                              
  done clear
  B)
   vacuole
  done clear
  C)
   protoplasm                       
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer306) In which, plastids are not found?
  A)
   Blue-green algae            
  done clear
  B)
   Bacteria
  done clear
  C)
   Fungi                                   
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer307) Repulsion of homologous chromosomes takes place in
  A)
   zygotene                           
  done clear
  B)
   leptotene
  done clear
  C)
   diakinesis                          
  done clear
  D)
   diplotene
  done clear
  View Answer play_arrow

• question_answer308) In eukaryotic cell, the type of ribosome is
  A)
   Only 70S                             
  done clear
  B)
   Only 80S
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   Only SOS
  done clear
  View Answer play_arrow

• question_answer309) Synthesis of DNA takes place in
  A)
   \[{{G}_{1}}\]                                    
  done clear
  B)
  \[~{{G}_{2}}\]
  done clear
  C)
   S                                            
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer310) The genetic material of prokaryotic cells is called
  A)
   nucleus                              
  done clear
  B)
   nucleolus
  done clear
  C)
   nucleoid                             
  done clear
  D)
   centrosome
  done clear
  View Answer play_arrow

• question_answer311) Which   organelle   of   plant   secretes polysaccharide and protein to make cell walls?
  A)
   Golgi bodies                     
  done clear
  B)
   Lysosome
  done clear
  C)
   Mitochondria   
  done clear
  D)
   Chloroplast
  done clear
  View Answer play_arrow

• question_answer312) RNA contains which of the following base, in place of thymine of DNA?
  A)
   Thymine                            
  done clear
  B)
   Uracil
  done clear
  C)
   Adenine                             
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer313) The main function of lysosome is in
  A)
   only extracellular digestion
  done clear
  B)
   only intracellular digestion
  done clear
  C)
   Both [a] and [d]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer314) Eukaryotic cell has
  A)
   chromatin fibre               
  done clear
  B)
   definite nucleus
  done clear
  C)
   incipient nucleus            
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer315) At which stage of mitosis, chromatids separse and start moving towards poles?            
  A)
   Prophase                           
  done clear
  B)
   Metaphase
  done clear
  C)
   Anaphase                          
  done clear
  D)
   Telophase
  done clear
  View Answer play_arrow

• question_answer316) TMV contains
  A)
   DNA                                     
  done clear
  B)
   RNA + Protein
  done clear
  C)
   DNA + RNA                       
  done clear
  D)
   DNA + Protein
  done clear
  View Answer play_arrow

• question_answer317) Four daughter cells formed after meiosis are
  A)
   genetically similar          
  done clear
  B)
   genetically different
  done clear
  C)
   anucleate                          
  done clear
  D)
   multinucleate
  done clear
  View Answer play_arrow

• question_answer318) The synthesis of lipids and lipoproteins is associated with                             
  A)
   endoplasmic reticulum                
  done clear
  B)
   mitochondria
  done clear
  C)
   chloroplast
  done clear
  D)
   lysosomes
  done clear
  View Answer play_arrow

• question_answer319) DNA strands are and parallel because
  A)
   H-bonds
  done clear
  B)
   phosphate diester bonds
  done clear
  C)
   disulphide bonds
  done clear
  D)
   phosphate bonds
  done clear
  View Answer play_arrow

• question_answer320) Cell theory was proposed by
  A)
   Schleiden and Schwann
  done clear
  B)
   Waston and Crick
  done clear
  C)
   Darwin and Wallace
  done clear
  D)
   Mendel and Morgan
  done clear
  View Answer play_arrow

• question_answer321) During meiosis the division of centromere takes place in                                
  A)
   first prophase                  
  done clear
  B)
   first anaphase
  done clear
  C)
   second metaphase       
  done clear
  D)
   second anaphase
  done clear
  View Answer play_arrow

• question_answer322) Which one of the following is not found in animal cell?
  A)
   Nucleus                              
  done clear
  B)
   Golgi bodies
  done clear
  C)
   Chloroplast                       
  done clear
  D)
   Mitochondria
  done clear
  View Answer play_arrow

• question_answer323) Unit membrane consists of
  A)
   Lipid + Sugar + Protein
  done clear
  B)
   Protein + Lipid + Protein
  done clear
  C)
   Lipid + Protein + Lipid
  done clear
  D)
   Protein
  done clear
  View Answer play_arrow

• question_answer324) Translation is the process, in which
  A)
   DNA is formed on DNA template
  done clear
  B)
   RNA is formed on DNA template
  done clear
  C)
   DNA is formed on RNA template
  done clear
  D)
   Protein is formed from mRNA
  done clear
  View Answer play_arrow

• question_answer325) Linkage was first studied by
  A)
   Darwin                                
  done clear
  B)
   Morgan
  done clear
  C)
   Bateson and Punned    
  done clear
  D)
   Mendel
  done clear
  View Answer play_arrow

• question_answer326) Principal constituents of chromosomes are
  A)
   DNA                                     
  done clear
  B)
   RNA
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   tRNA
  done clear
  View Answer play_arrow

• question_answer327) Who explained the Operon model for the first time?
  A)
   Francois Jacob
  done clear
  B)
   Jacques Monod
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer328) The enzyme responsible for transcription is
  A)
   DNA polymerase-I
  done clear
  B)
   RNA polymerase
  done clear
  C)
   Reverse transcriptase
  done clear
  D)
   DNA polymerase-III
  done clear
  View Answer play_arrow

• question_answer329) Initiation codon is
  A)
   AUG                                    
  done clear
  B)
   UAG
  done clear
  C)
   UGA                                    
  done clear
  D)
   UAA
  done clear
  View Answer play_arrow

• question_answer330) The direction of DNA replication is
  A)
   from 5' end towards 3' end
  done clear
  B)
   from 3' end towards 5' end
  done clear
  C)
   amino terminus to carboxy terminus
  done clear
  D)
   carboxy terminus to amino terminus
  done clear
  View Answer play_arrow

• question_answer331) Extra chromosomal genetic material found in bacteria is
  A)
   plasmid                              
  done clear
  B)
   micro some
  done clear
  C)
   ribosome                           
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer332) Functional unit of gene is
  A)
   muton                                
  done clear
  B)
   recon
  done clear
  C)
   cistron                                
  done clear
  D)
   codon
  done clear
  View Answer play_arrow

• question_answer333) A mutant micro-organism unable to synthesize a compound required for its growth but able to grow if the compound is provided, is known as
  A)
   auxotroph                         
  done clear
  B)
   prototroph
  done clear
  C)
   autotroph                         
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer334) Incomplete dominance is found in
  A)
  Pisum sativum                  
  done clear
  B)
   Antirrhinum majus
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer335) Shape of chromosome is determined by
  A)
   telomere                           
  done clear
  B)
   centromere
  done clear
  C)
   chromomere   
  done clear
  D)
   centrosome
  done clear
  View Answer play_arrow

• question_answer336) How many types of genotypes are formed in \[{{F}_{2}}\] progeny obtained from self pollination of a dihybrid \[{{F}_{1}}\]?
  A)
   9                                            
  done clear
  B)
   3
  done clear
  C)
   6                                            
  done clear
  D)
   1
  done clear
  View Answer play_arrow

• question_answer337) Functioning of structural genes is controlled by
  A)
   operator                            
  done clear
  B)
   promoter
  done clear
  C)
   ligase                                   
  done clear
  D)
   regulatory gene
  done clear
  View Answer play_arrow

• question_answer338) Domestic cooking gas cylinder is filled with
  A)
   alcohol
  done clear
  B)
   diesel oil
  done clear
  C)
   liquid petroleum gas
  done clear
  D)
   coal gas
  done clear
  View Answer play_arrow

• question_answer339) Sometimes when a virus attacks a bacterium, neither the virus multiplies nor the bacterium does. This phenomenon is called
  A)
   adsorption                        
  done clear
  B)
   assimilation
  done clear
  C)
   lysogeny                            
  done clear
  D)
   viral stability
  done clear
  View Answer play_arrow

• question_answer340) An organism having cytoplasm, DNA and RNA but no cell wall is
  A)
   cyano bacterium            
  done clear
  B)
   mycoplasma
  done clear
  C)
   bacterium                         
  done clear
  D)
   virus
  done clear
  View Answer play_arrow

• question_answer341) Among the following which are the smallest organisms?
  A)
   Bacteria                              
  done clear
  B)
   Mycoplasma
  done clear
  C)
   Nostoc                                
  done clear
  D)
   Virus
  done clear
  View Answer play_arrow

• question_answer342) The genetic material in viruses is
  A)
   in some viruses both DNA and RNA
  done clear
  B)
   only RNA
  done clear
  C)
   only DNA
  done clear
  D)
   in some viruses only DNA and in some only RNA
  done clear
  View Answer play_arrow

• question_answer343) One of the useful activities of several bacteria is
  A)
   nitrogen fixation
  done clear
  B)
   nitrification
  done clear
  C)
   operation of biogeochemical cycles
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer344) In a bacterial cell, the organelle with respiratory enzymes is
  A)
   mitochondria  
  done clear
  B)
   chondrisome
  done clear
  C)
   mesosome                       
  done clear
  D)
   centrosome
  done clear
  View Answer play_arrow

• question_answer345) Circular DNA molecule occurs in
  A)
   viruses
  done clear
  B)
   bacteria, chloroplasts and mitochondria
  done clear
  C)
   bacteria and chloroplasts only
  done clear
  D)
   bacteria only
  done clear
  View Answer play_arrow

• question_answer346) A bacteriophage is a
  A)
   virus attacking another virus
  done clear
  B)
   stage in the life cycle of a bacterium
  done clear
  C)
   bacterium attacking a virus
  done clear
  D)
   virus attacking a bacterium
  done clear
  View Answer play_arrow

• question_answer347) The cells of the bacterium Streptococcus remain arranged in the form of
  A)
   chain                                   
  done clear
  B)
   irregular cluster
  done clear
  C)
   cube                                    
  done clear
  D)
   plate
  done clear
  View Answer play_arrow

• question_answer348) The main function of elementary bodies in mycoplasma is
  A)
   reproduction   
  done clear
  B)
   nutrition
  done clear
  C)
   secretion                           
  done clear
  D)
   respiration
  done clear
  View Answer play_arrow

• question_answer349) The water of Holy Gang as river is pure due to the presence of
  A)
   cyanophages   
  done clear
  B)
   hydrophytes
  done clear
  C)
   bacteria                              
  done clear
  D)
   bacteriophages
  done clear
  View Answer play_arrow

• question_answer350) Which one of the following can utilize molecular nitrogen \[({{N}_{2}})\] as nutrient for growth?
  A)
   Khizobium                         
  done clear
  B)
   Spirogyra
  done clear
  C)
   Mucor                                 
  done clear
  D)
   Methanococcus
  done clear
  View Answer play_arrow

• question_answer351) In Pinus, male and female reproductive structures occur?
  A)
   On different branches of the same plant
  done clear
  B)
   On different plants
  done clear
  C)
   On same branch
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer352) The cell wall of Spirogyra is made up of
  A)
   cellulose                            
  done clear
  B)
   pectin
  done clear
  C)
   lignin                                   
  done clear
  D)
   chitin
  done clear
  View Answer play_arrow

• question_answer353) Stomata in Funaria are found in
  A)
   capsule                               
  done clear
  B)
   foot
  done clear
  C)
   seta                                     
  done clear
  D)
   nowhere
  done clear
  View Answer play_arrow

• question_answer354) A bisexual flower, which never opens in life is known as
  A)
   homogamous                  
  done clear
  B)
   heterogamous
  done clear
  C)
   dichogamous                   
  done clear
  D)
   cleistogamous
  done clear
  View Answer play_arrow

• question_answer355) Eichhornia crassipes is a
  A)
   desert plant                     
  done clear
  B)
   parasite
  done clear
  C)
   water plant                       
  done clear
  D)
   terrestrial plant   
  done clear
  View Answer play_arrow

• question_answer356) Plants of salty seashore wet-lands are call?
  A)
   halophytes                       
  done clear
  B)
   heliophytes
  done clear
  C)
   hydrophytes                    
  done clear
  D)
   saprophytes
  done clear
  View Answer play_arrow

• question_answer357) If testa is removed from water soaked gram seed, the remaining structure is
  A)
   full mature embryo                  
  done clear
  B)
   cotyledons with endosperm and perican
  done clear
  C)
   cotyledons filled with starch
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer358) Double fertilization means fusion of
  A)
   one of the polar nuclei with the other  one male gamete with egg cell
  done clear
  B)
   one of the male gamete with polar nuclei and other with antipodal cells          
  done clear
  C)
   one of the male gamete with secondary nucleus and the other male gamete with egg cell
  done clear
  D)
   one antipodal cell with egg cell and synergid cell with antipodal cell
  done clear
  View Answer play_arrow

• question_answer359) Double fertilization was first discovered by Nawaschin (1898) in
  A)
   Lilium and Fritillaria
  done clear
  B)
   mango and sugarcane
  done clear
  C)
   papaya and pea
  done clear
  D)
   Brassica and candytuft
  done clear
  View Answer play_arrow

• question_answer360) In an angiospermic plant, endosperm is formed due to fertilization of secondary nucleus but is absent in some of the seeds viz pea bean Phaseolus (moong) etc. It is due to lack of
  A)
   certain enzymes
  done clear
  B)
   dicotyledonous hormone
  done clear
  C)
   growth hormone
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer361) A component of xylem is
  A)
   sieve tube                         
  done clear
  B)
   medullary ray
  done clear
  C)
   sclereid                              
  done clear
  D)
   tracheid
  done clear
  View Answer play_arrow

• question_answer362) A group of cells alike in forms, function and origin is called
  A)
   organ                                  
  done clear
  B)
   organelle
  done clear
  C)
   tissue                                  
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer363) Hard, lignified, thick walled, long and pointed cells in a plant are
  A)
   parenchyma                     
  done clear
  B)
   sclerenchyma
  done clear
  C)
   collenchyma                     
  done clear
  D)
   sclereids
  done clear
  View Answer play_arrow

• question_answer364) The meristem, which develops into a primary vascular tissue is
  A)
   protonema                       
  done clear
  B)
   promeristem
  done clear
  C)
   ground meristem           
  done clear
  D)
   procambium
  done clear
  View Answer play_arrow

• question_answer365) Which one of the following elements is required for photosynthesis oxygen evolution?
  A)
   Copper                               
  done clear
  B)
   Iron
  done clear
  C)
   Manganese                      
  done clear
  D)
   Zinc
  done clear
  View Answer play_arrow

• question_answer366) Sinks are related to
  A)
   transport of organic solutes
  done clear
  B)
   stomata
  done clear
  C)
   enzymes
  done clear
  D)
   phytochrome
  done clear
  View Answer play_arrow

• question_answer367) Supply ends in transport of solute are
  A)
   green leaves and storage organs
  done clear
  B)
   root and stem
  done clear
  C)
   xylem and phloem
  done clear
  D)
   Hormones and enzymes
  done clear
  View Answer play_arrow

• question_answer368) Stomata can open at night also in
  A)
   xerophyte                         
  done clear
  B)
   gametophyte
  done clear
  C)
   hydrophyte                      
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer369) Who had said that 'transpiration is a necessary evil'?
  A)
   Curtis                                  
  done clear
  B)
   Steward
  done clear
  C)
   Anderson                          
  done clear
  D)
   J C Bose
  done clear
  View Answer play_arrow

• question_answer370) Agranal chloroplasts occur in certain
  A)
   succulents                         
  done clear
  B)
   \[{{C}_{3}}-\]plants
  done clear
  C)
   \[{{C}_{4}}-\]plants                                       
  done clear
  D)
   hydrophytes
  done clear
  View Answer play_arrow

• question_answer371) The wavelength of light most absorbed during photosynthesis is
  A)
   400nm                                
  done clear
  B)
   550nm
  done clear
  C)
   660nm                                
  done clear
  D)
   70nm
  done clear
  View Answer play_arrow

• question_answer372) Which are related with photorespiration?
  A)
   Spherosome                    
  done clear
  B)
   Lysosomes
  done clear
  C)
   Glyoxysomes                   
  done clear
  D)
   Peroxisomes
  done clear
  View Answer play_arrow

• question_answer373) The end product of glycolysis is
  A)
   glucose                               
  done clear
  B)
   fructose
  done clear
  C)
   pyruvic acid                      
  done clear
  D)
   ethyl alcohol
  done clear
  View Answer play_arrow

• question_answer374) RQ is more than one in case of
  A)
   fat                                        
  done clear
  B)
   fructose
  done clear
  C)
   glucose                               
  done clear
  D)
   organic add
  done clear
  View Answer play_arrow

• question_answer375) Enzymes concerned with transfer of electrons are
  A)
   hydrolysases   
  done clear
  B)
   dehydrogenases
  done clear
  C)
   transminases                   
  done clear
  D)
   proteases
  done clear
  View Answer play_arrow

• question_answer376) Nitrogen is the essential component of
  A)
   carbohydrates                 
  done clear
  B)
   fats
  done clear
  C)
   proteins                             
  done clear
  D)
   oil
  done clear
  View Answer play_arrow

• question_answer377) Phytochrome was discovered by
  A)
   W Went                             
  done clear
  B)
   Gamer and Allard
  done clear
  C)
   F F Blackman                    
  done clear
  D)
   R Hill
  done clear
  View Answer play_arrow

• question_answer378) The activity of a-amylase in the endospore of barley germinating seed is induced by
  A)
   ethylene                            
  done clear
  B)
   cytokinin
  done clear
  C)
   IAA                                       
  done clear
  D)
   gibberellins
  done clear
  View Answer play_arrow

• question_answer379) A pigment concerned with both floral induction and seed germination is
  A)
   florigen                              
  done clear
  B)
   chlorophyll
  done clear
  C)
   plastocyanin                     
  done clear
  D)
   phytochrome
  done clear
  View Answer play_arrow

• question_answer380) Name the famous plant ecologist
  A)
   Jagdish Chandra Bose  
  done clear
  B)
   Birbal Sahani
  done clear
  C)
  Ramdeva Mishra             
  done clear
  D)
   Charles Darwin
  done clear
  View Answer play_arrow

• question_answer381) Possibilities of presence of coal in a particular area can be guessed by the study of  
  A)
   Economic botany           
  done clear
  B)
   Ecology
  done clear
  C)
   pollen grain analysis      
  done clear
  D)
   mining the area
  done clear
  View Answer play_arrow

• question_answer382) The significance of ecosystem lies in
  A)
   flow of energy
  done clear
  B)
   cycling of matter
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer383) Biological equilibrium is found among the
  A)
   producers and consumers
  done clear
  B)
   producers and decomposers
  done clear
  C)
   producers, consumers and decomposers
  done clear
  D)
   producers and light
  done clear
  View Answer play_arrow

• question_answer384) The number of individual of a species in a particular ecosystem at a given time remains constant due to
  A)
   man                                     
  done clear
  B)
   parasites
  done clear
  C)
   predators                          
  done clear
  D)
   available food
  done clear
  View Answer play_arrow

• question_answer385) The two components of an ecosystem are
  A)
   biotic and abiotic
  done clear
  B)
   plants and animals
  done clear
  C)
   weeds and micro-organisms
  done clear
  D)
   plants and light
  done clear
  View Answer play_arrow

• question_answer386) The pyramid of number in a grassland ecosystem is
  A)
   linear                                   
  done clear
  B)
   upright
  done clear
  C)
   irregular                             
  done clear
  D)
   inverted
  done clear
  View Answer play_arrow

• question_answer387) One of the important effects of \[S{{O}_{2}}\] and its transformation products on plants is
  A)
   plasmolysis
  done clear
  B)
   destruction of chlorophyll
  done clear
  C)
   destruction of Golgi bodies
  done clear
  D)
   destruction of cell wall
  done clear
  View Answer play_arrow

• question_answer388) Major pollutant present in the jet plane emission is
  A)
   carbon tetrachloride     
  done clear
  B)
   sulphur dioxide
  done clear
  C)
   carbon monoxide          
  done clear
  D)
   fluorocarbon
  done clear
  View Answer play_arrow

• question_answer389) Sewage water is purified for recycling by the action of
  A)
   light                                     
  done clear
  B)
   micro-organisms
  done clear
  C)
   aquatic plants                  
  done clear
  D)
   fishes
  done clear
  View Answer play_arrow

• question_answer390) Spraying of DDT on crops produces pollution of
  A)
   soil and water                  
  done clear
  B)
   air and soil
  done clear
  C)
   crops and air   
  done clear
  D)
   air and water
  done clear
  View Answer play_arrow

• question_answer391) Which one is not dangerous
  A)
   bio pollutants                  
  done clear
  B)
   ozone layer
  done clear
  C)
   nuclear blast   
  done clear
  D)
   deforestation
  done clear
  View Answer play_arrow

• question_answer392) A drug from root, which causes mental disorder and reduces blood pressure is obtained from
  A)
   Rauwolfia serpentine   
  done clear
  B)
   Atropa baladona
  done clear
  C)
   Colchicum luteum          
  done clear
  D)
   Digitalis purpurea
  done clear
  View Answer play_arrow

• question_answer393) Maximum sugarcane grown in
  A)
  Madhya Pradesh             
  done clear
  B)
   Bihar
  done clear
  C)
   Punjab                                
  done clear
  D)
   Uttar Pradesh
  done clear
  View Answer play_arrow

• question_answer394) Which one is the riches source of vegetarian protein?
  A)
   Gram                                   
  done clear
  B)
   Soyabean
  done clear
  C)
   Wheat                                
  done clear
  D)
   Rice
  done clear
  View Answer play_arrow

• question_answer395) Branch of Botany connected with study of food, fibre and wood yielding plant
  A)
   Ethnobotany   
  done clear
  B)
   Palaeobotany
  done clear
  C)
   Economic botany           
  done clear
  D)
   Microbiology
  done clear
  View Answer play_arrow

• question_answer396) Which fibre crop occupies the maximum area in India?
  A)
   Jute                                     
  done clear
  B)
   Cotton
  done clear
  C)
   Flax                                      
  done clear
  D)
   Sisal
  done clear
  View Answer play_arrow

• question_answer397) Botanical name of tea is
  A)
   Piper nigrum                    
  done clear
  B)
   Thea/Camellia  sinensis
  done clear
  C)
   Coffea Arabica
  done clear
  D)
   Tectona grandis
  done clear
  View Answer play_arrow

• question_answer398) Which can preserve food stuffs?
  A)
   Salt and sugar                  
  done clear
  B)
   Sugar and vinegar
  done clear
  C)
   Vinegar                              
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer399) Forest research institute is situated at
  A)
   Lucknow                            
  done clear
  B)
   Bhopal
  done clear
  C)
   Hyderabad                        
  done clear
  D)
   Dehradun
  done clear
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• question_answer400) Humulin is
  A)
   antibiotic                           
  done clear
  B)
   insulin
  done clear
  C)
   haemoglobin   
  done clear
  D)
   pepsin
  done clear
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