Solved papers for Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2004

done Chhattisgarh PMT Solved Paper-2004 Total Questions - 400

• question_answer1) Dimensions of which of the following three quantities are the same?                    
  A)
   Work, energy, force
  done clear
  B)
   Velocity, momentum, impulse
  done clear
  C)
   Potential energy, kinetic energy, momentum
  done clear
  D)
   Pressure, stress, coefficient of elasticity
  done clear
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• question_answer2) From the following pairs, choose the pair that does not have identical dimensions.         
  A)
   Angular momentum and Planck's constant
  done clear
  B)
   Moment of inertia and moment of force
  done clear
  C)
   Work and torque
  done clear
  D)
   Impulse and momentum
  done clear
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• question_answer3) A body starts to fall freely under gravity. The distance covered by it in first, second and third second are in ratio
  A)
   1 : 3 : 5                                
  done clear
  B)
   1 : 2 : 3
  done clear
  C)
   1: 4: 9                                  
  done clear
  D)
   1: 5 : 6
  done clear
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• question_answer4) For a projectile on the horizontal surface of a planet \[y=8t-5{{t}^{2}}\] m shows height and \[x=8\,t\]m shows the horizontal distance, then the velocity with which the projectile is projected is
  A)
   8m/s                                    
  done clear
  B)
   6 m/s
  done clear
  C)
   10 m/s                                
  done clear
  D)
   100 m/s
  done clear
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• question_answer5) A motorcycle is going on an over bridge of radius R. The driver maintains a constant speed. As the motorcycle is ascending on the over bridge, the normal force on it
  A)
   increases                           
  done clear
  B)
   decreases
  done clear
  C)
   remains the same          
  done clear
  D)
   fluctuates
  done clear
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• question_answer6) A body of mass 0.5 kg is projected under gravity with a speed of 98 m/s at an angle of \[60{}^\circ \] with the horizontal. The change in momentum (in magnitude) of the body is
  A)
   24.5 N-s                              
  done clear
  B)
   49.0 N-s
  done clear
  C)
   98.0 N-s                              
  done clear
  D)
   50.0 N-s
  done clear
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• question_answer7) A body of mass 10 kg is moving with a constant velocity of 10 m/s. When a constant force acts for 4 s on it, it moves with a velocity 2 m/s in the opposite direction. The acceleration produced in it is
  A)
   3 m/s2                                 
  done clear
  B)
   - 3 m/s2
  done clear
  C)
   0.3 m/s2                             
  done clear
  D)
   - 0.3 m/s2
  done clear
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• question_answer8) A body of mass M is kept on a rough horizontal surface [friction coefficient =µ). A person is trying to pull the body by applying a horizontal force F but the body is not moving then
  A)
  \[F=Mg\]
  done clear
  B)
  \[F=\mu Mg\]
  done clear
  C)
  \[Mg\le F\le Mg\sqrt{1+{{\mu }^{2}}}\]
  done clear
  D)
  \[Mg\ge F\ge Mg\sqrt{1+{{\mu }^{2}}}\]
  done clear
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• question_answer9) A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embedded into it. The kinetic energy of the composite block will be
  A)
  \[\frac{1}{2}m{{v}^{2}}\times \frac{m}{(m+M)}\]            
  done clear
  B)
  \[\frac{1}{2}m{{v}^{2}}\times \frac{M}{(m+M)}\]
  done clear
  C)
  \[\frac{1}{2}m{{v}^{2}}\times \frac{(M+m)}{M}\]            
  done clear
  D)
  \[\frac{1}{2}M{{v}^{2}}\times \frac{m}{(m+M)}\]
  done clear
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• question_answer10) One-fourth length of a spring of force constant k is cut away. The force constant of the remaining spring will be
  A)
   \[\frac{3}{4}k\]                               
  done clear
  B)
  \[\frac{4}{3}k\]
  done clear
  C)
   k                                            
  done clear
  D)
   4k
  done clear
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• question_answer11) The force constants of two springs are \[{{k}_{1}}\] and\[{{k}_{2}}\] respectively. Both are stretched till their potential energies are equal. The forces \[{{f}_{1}}\] and \[{{f}_{2}}\] applied on them are in the ratio
  A)
   \[{{k}_{1}}:{{k}_{2}}\]                                   
  done clear
  B)
   \[{{k}_{2}}:{{k}_{1}}\]
  done clear
  C)
  \[\sqrt{{{k}_{1}}}:\sqrt{{{k}_{2}}}\]                         
  done clear
  D)
  \[\sqrt{{{k}_{2}}}:\sqrt{{{k}_{1}}}\]
  done clear
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• question_answer12) A fighter plane is moving in a vertical circle of radius r. Its minimum velocity at the highest point of the circle will be
  A)
   \[\sqrt{3gr}\]                                   
  done clear
  B)
  \[\sqrt{2gr}\]
  done clear
  C)
  \[\sqrt{gr}\]                                      
  done clear
  D)
   \[\sqrt{gr/2}\]
  done clear
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• question_answer13) A spring of length L and uniform cross-section is spread on a smooth plane. One of its ends is pulled by a force F. Find the tension in it at a distance I from this end.
  A)
   \[\frac{l}{2}F\]                                 
  done clear
  B)
  \[\frac{L}{l}F\]
  done clear
  C)
  \[\left( 1-\frac{l}{L} \right)F\]                    
  done clear
  D)
  \[\left( 1+\frac{l}{L} \right)F\]
  done clear
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• question_answer14) A particle is making uniform circular motion with angular momentum J. If its kinetic energy is made half and angular frequency be doubled, its new angular momentum will be
  A)
   2J                                          
  done clear
  B)
   4J
  done clear
  C)
   J/2                                        
  done clear
  D)
   J/4
  done clear
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• question_answer15) Three rings each of mass M and radius R are arranged as shown in the figure. The moment of inertia of the system about YY' will be
  A)
   3 MR2                                  
  done clear
  B)
   3/2 MR2
  done clear
  C)
   5 MR2                                  
  done clear
  D)
   7/2 MR2
  done clear
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• question_answer16) If the radius of the earth were to shrink by 1% its mass remaining the same, the acceleration due to gravity on the earth's surface would
  A)
   decrease by 1%              
  done clear
  B)
   remain unchanged
  done clear
  C)
   increase by 1%                
  done clear
  D)
   increase by 2%
  done clear
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• question_answer17) A satellite is moving around the earth with speed v in a circular orbit of radius r. If the orbit radius is decreased by 1%, the speed of the satellite will
  A)
   increase by 1%                
  done clear
  B)
   increase by 0.5%
  done clear
  C)
   decrease by 1%              
  done clear
  D)
   decrease by 0.5%
  done clear
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• question_answer18) How much energy will be necessary for making a body of 500 kg escape from the earth? \[\text{ }\!\![\!\!\text{ g}\,\text{=}\,\text{9}\text{.8}\,\text{m}{{\text{s}}^{2}},\] radius of the earth \[\text{6}\text{.4 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{6}}}\text{m }\!\!]\!\!\text{ }\]
  A)
   About \[9.8\times {{10}^{6}}J\]
  done clear
  B)
   About \[6.4\times {{10}^{8}}J\]
  done clear
  C)
   About \[3.1\times {{10}^{10}}J\]             
  done clear
  D)
   About \[27.4\times {{10}^{12}}J\]
  done clear
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• question_answer19) A wire of length L and cross-sectional area A is made of a material of Young's modulus Y. It is stretched by an amount x. The work done is
  A)
   \[YxA/2L\]                         
  done clear
  B)
   \[Y{{x}^{2}}A/L\]
  done clear
  C)
  \[Y{{x}^{2}}A/2L\]                           
  done clear
  D)
   \[2Y{{x}^{2}}A/L\]
  done clear
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• question_answer20) A capillary tube, made of glass, is dipped into mercury. Then,
  A)
   mercury rises in the capillary tube
  done clear
  B)
   mercury rises and flows out of the capillary  tube
  done clear
  C)
   mercury descends in the capillary tube
  done clear
  D)
   mercury neither rises nor descends in the capillary tube
  done clear
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• question_answer21) At which of the following temperature the root mean square velocity of gaseous hydrogen molecules will be equal to root mean square velocity of oxygen molecules at \[47{}^\circ C\]. ?
  A)
   20 K          
  done clear
  B)
   80 K
  done clear
  C)
   - 73 K                                   
  done clear
  D)
   3 K
  done clear
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• question_answer22) The pressure of a gas in a vessel is \[{{P}_{0.}}\] masses of all the molecules are halved and their speeds are doubled, the resulting pressure \[p\] will be
  A)
   \[4{{p}_{0}}\]                                   
  done clear
  B)
   \[{{p}_{0}}/2\]
  done clear
  C)
   \[{{p}_{0}}\]                                     
  done clear
  D)
   \[2{{p}_{0}}\]
  done clear
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• question_answer23) For a gas, if\[\gamma =1.4,\] then atomicity \[{{C}_{p}}\] and\[{{C}_{v}}\] of the gas are respectively
  A)
   monoatomic, 5/2 R, 3/2 R
  done clear
  B)
   monoatomic, 7/2 R, 5/2 R
  done clear
  C)
   diatomic, 7/2 R, 5/2 R
  done clear
  D)
   triatomic, 7/2 R, 5/2 R
  done clear
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• question_answer24) During the adiabatic expansion of 2 moles of a gas, the change in internal energy was found to be equal to -100 J. The work done during the process will be equal to
  A)
   zero                                     
  done clear
  B)
   -100 J
  done clear
  C)
   200 J                                    
  done clear
  D)
   100 J
  done clear
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• question_answer25) In an adiabatic expansion of a gas initial and final temperatures are \[{{T}_{1}}\] and \[{{T}_{2}}\] respectively, then the change in internal energy of the gas is
  A)
  \[R\text{/ }\!\!\gamma\!\!\text{ }-1({{T}_{2}}-{{T}_{1}})\]                     
  done clear
  B)
  \[R\text{/ }\!\!\gamma\!\!\text{ }-1({{T}_{1}}-{{T}_{2}})\]
  done clear
  C)
   \[R({{T}_{2}}-{{T}_{1}})\]                            
  done clear
  D)
   zero
  done clear
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• question_answer26) The lengths and radii of two rods made of same material are in the ratio 1:2 and 2:3 respectively. If the temperature difference between the ends for the two rods be the same, then in the steady state, the amount of heat flowing per second through them will be in the ratio
  A)
   1 :1                                       
  done clear
  B)
   4 : 3
  done clear
  C)
   8 : 9                                      
  done clear
  D)
   3 : 2
  done clear
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• question_answer27) Which of the following makes the best choice for cooking utensils?
  A)
   High specific heat and high conductivity
  done clear
  B)
   Low specific heat and low conductivity
  done clear
  C)
   High specific heat and low conductivity
  done clear
  D)
   Low specific heat and high conductivity
  done clear
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• question_answer28) A hot liquid takes 5 min to cool from \[70{}^\circ C\] to \[60{}^\circ C\]. How long will it take to cool from \[60{}^\circ C\] to \[50{}^\circ C\]?
  A)
   5 min
  done clear
  B)
   more than 5 min
  done clear
  C)
   less than 5 min
  done clear
  D)
   less or more than 5 min depending on the nature of liquid
  done clear
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• question_answer29) At temperature T, the power radiated by a body is Q watt. At the temperature 3T, the power  radiated by it will be
  A)
   3Q                                        
  done clear
  B)
   9Q
  done clear
  C)
   27 Q                                     
  done clear
  D)
   81 Q
  done clear
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• question_answer30) A particle of mass 10 g is executing simple harmonic motion with an amplitude of 0.5 m and periodic time of (\[\text{ }\!\!\pi\!\!\text{ /5}\]) second. The maximum value of the force acting on the particle is
  A)
   25 N
  done clear
  B)
                          5 N
  done clear
  C)
   2.5 N                                    
  done clear
  D)
   0.5 N
  done clear
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• question_answer31) The period of vibration of a mass m suspended from a spring is 2 s. If along with it another mass of 2 kg is also suspended, the period of oscillation increases by one second. The mass m will be
  A)
   2 kg                                      
  done clear
  B)
   1 kg
  done clear
  C)
   1.6kg                                   
  done clear
  D)
   2.6 kg
  done clear
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• question_answer32) A particle is executing simple harmonic motion with frequency\[f.\] The frequency at which its kinetic energy changes into potential energy is
  A)
   \[f\text{/2}\]                                   
  done clear
  B)
   \[f\]
  done clear
  C)
   \[2f\]                                   
  done clear
  D)
   \[4f\]
  done clear
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• question_answer33) The lengths of two open organ pipes are \[l\] and \[(l+\Delta l)\] respectively. Neglecting end correction the frequency of beats between them will be approximately
  A)
  \[\frac{v}{2l}\]                                  
  done clear
  B)
  \[\frac{v}{4l}\]
  done clear
  C)
  \[\frac{v\Delta l}{2{{l}^{2}}}\]                                    
  done clear
  D)
  \[\frac{v\Delta l}{l}\] (here v is the speed of sound)
  done clear
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• question_answer34) A source of sound is moving with constant velocity of 20 m/s emitting a note of frequency 1000 Hz. The ratio of frequencies observed by a stationary observer while the source is approaching him and after it crosses him will be (speed of sound v = 340 m/s)
  A)
   9 : 8                                      
  done clear
  B)
   8 : 9
  done clear
  C)
   1:1                                        
  done clear
  D)
   9 :10
  done clear
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• question_answer35) The equation of a stationary wave is \[y=0.8\,\cos \,\left( \frac{\pi x}{20} \right)\,\sin \,200\,\pi t\] where x is in and t is in sec. The separation between consecutive nodes will be
  A)
   20 cm
  done clear
  B)
                          10 cm
  done clear
  C)
   40cm                                   
  done clear
  D)
   30cm
  done clear
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• question_answer36) The distance travelled by light in glass (refractive index = 1.5) in a nanosecond will be
  A)
   45cm                                   
  done clear
  B)
   40cm
  done clear
  C)
   30cm                                   
  done clear
  D)
   20cm
  done clear
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• question_answer37) Two phase related and monochromatic beams of light have intensities \[I\] and \[4I.\] Possible maximum and minimum intensities in the resultant beam obtained due to superposition are,
  A)
  \[5I\,\text{and}\,I\]                                       
  done clear
  B)
   \[5I\,\text{and}\,3I\]
  done clear
  C)
   \[9I\,\text{and}\,3I\]                                   
  done clear
  D)
  \[9I\,\text{and}\,I\]
  done clear
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• question_answer38) A light ray is incident normally on a plane mirror. The angle of reflection will be
  A)
   \[135{}^\circ \]
  done clear
  B)
  \[90{}^\circ \]
  done clear
  C)
  \[45{}^\circ \]
  done clear
  D)
  \[0{}^\circ \]
  done clear
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• question_answer39) If refractive indices of water and glass with respect to vacuum be 4/3 and 3/2 respectively, the refractive index of glass with respect to water will be
  A)
   9/8                                       
  done clear
  B)
   8/9
  done clear
  C)
   1                                            
  done clear
  D)
   2
  done clear
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• question_answer40) Light passes from vacuum into glass at incident angle \[45{}^\circ \]. Which property of the light wave remains unchanged?
  A)
   Direction of motion       
  done clear
  B)
   Speed
  done clear
  C)
   Wavelength                     
  done clear
  D)
   Frequency
  done clear
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• question_answer41) A convex lens has a focal length\[f.\] It is cut into two parts along the dotted line as shown in the figure. The focal length of each part will be
  A)
   \[f\text{/2}\]                                   
  done clear
  B)
   \[f\]
  done clear
  C)
   \[\text{3/2}f\]                                 
  done clear
  D)
   \[2f\]
  done clear
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• question_answer42) The nature of sun's spectrum is
  A)
   continuous spectrum with absorption lines
  done clear
  B)
   lines spectrum
  done clear
  C)
   the spectrum of the helium atom
  done clear
  D)
   band spectrum
  done clear
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• question_answer43) A defective eye cannot see close objects clearly because their image is formed
  A)
   on the eye lens
  done clear
  B)
   between eye lens and retina
  done clear
  C)
   on the retina
  done clear
  D)
   beyond retina
  done clear
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• question_answer44) A telescope of diameter 2 m uses light of wavelength \[5000\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] for viewing stars. The minimum angular separation between two stars whose image is seen just resolved by this telescope is
  A)
  \[0.31\times {{10}^{-6}}\,\text{rad}\]                    
  done clear
  B)
   \[0.25\times {{10}^{-6}}\,\text{rad}\]
  done clear
  C)
   \[0.6\times {{10}^{-3}}\,\text{rad}\]     
  done clear
  D)
  \[0.5\times {{10}^{-3}}\,\text{rad}\]
  done clear
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• question_answer45) Velocity of light is minimum in            
  A)
   vacuum                              
  done clear
  B)
   water           
  done clear
  C)
   glass                                    
  done clear
  D)
   diamond        
  done clear
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• question_answer46) A particle of mass m and charge q is accelerated through a potential difference of V volt. Its energy will be                           
  A)
   \[qV\]                                 
  done clear
  B)
   \[mqV\]
  done clear
  C)
   \[(q/m)V\]                        
  done clear
  D)
   \[q/V\]
  done clear
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• question_answer47) Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV, The minimum kinetic energy of the  emitted photoelectrons will be                     
  A)
   zero                                     
  done clear
  B)
   1 eV            
  done clear
  C)
   2eV                                      
  done clear
  D)
   10 eV            
  done clear
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• question_answer48) For the photoelectric effect, the maximum kinetic  energy  (KE)   of the  emitted photoelectrons is plotted against the  frequency v of the incident photons as shown in  the figure. The slope of the curve gives
  A)
   charge of the electron
  done clear
  B)
   work function of the metal
  done clear
  C)
   Planck's constant
  done clear
  D)
   ratio of the Planck's constant to electronic charge
  done clear
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• question_answer49) The unit of Planck's constant h is that of
  A)
   energy                                
  done clear
  B)
   work
  done clear
  C)
   linear momentum         
  done clear
  D)
   angular momentum
  done clear
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• question_answer50) Light of frequency \[4{{v}_{0}}\] is incident on the metal of the threshold frequency \[{{v}_{0}}.\] The maximum kinetic energy of the emitted photoelectrons is
  A)
   \[3h{{v}_{0}}\]                                
  done clear
  B)
  \[2h{{v}_{0}}\]
  done clear
  C)
   \[\frac{3}{2}h{{v}_{0}}\]                              
  done clear
  D)
  \[\frac{1}{2}h{{v}_{0}}\]
  done clear
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• question_answer51) An electron and a proton are kept in a uniform electric field. The ratio of their acceleration will be
  A)
   unity                                    
  done clear
  B)
   zero
  done clear
  C)
  \[{{\text{m}}_{p}}\text{/}{{\text{m}}_{\text{e}}}\]                        
  done clear
  D)
  \[{{\text{m}}_{e}}\text{/}{{\text{m}}_{p}}\]
  done clear
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• question_answer52) In a X-ray tube. X-rays are produced by electrons accelerated by V volt. The maximum frequency of the X-rays is
  A)
   \[ehV\]                              
  done clear
  B)
  \[hV\text{/e}\]
  done clear
  C)
   \[eh\text{/V}\]                               
  done clear
  D)
   \[eV\text{/h}\]
  done clear
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• question_answer53) The penetrating power of X-rays can be increased by
  A)
   increasing the current in the filament
  done clear
  B)
   decreasing the current in the filament
  done clear
  C)
   increasing   the   potential   difference between the cathode and the anode
  done clear
  D)
   decreasing  the  potential  difference between the cathode and the anode
  done clear
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• question_answer54) Two wires P and Q made up of different materials have same resistance at room temperature, when heated, resistance of P increases and that of Q decreases. We conclude that
  A)
   P and Q both are conductors but because of being made of different materials it happens so
  done clear
  B)
   P is n-type semiconductor and Q is p-type semiconductor
  done clear
  C)
   P is semiconductor and Q is conductor
  done clear
  D)
   P is conductor and Q is semiconductor
  done clear
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• question_answer55) The band gap in germanium and silicon in eV respectively is
  A)
   0.7,1.1                                 
  done clear
  B)
   1.1, 0.7
  done clear
  C)
   1.1, 0                                   
  done clear
  D)
   0,1.1
  done clear
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• question_answer56) A full wave rectifier circuit along with the input and output voltages is shown in the figure. The contribution to output voltage from diode 2 is
  A)
   A, C                                      
  done clear
  B)
   B, D
  done clear
  C)
   B,C                                       
  done clear
  D)
   A,D
  done clear
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• question_answer57) The electron in the lowest (n = 1) orbit in hydrogen atom has energy - 13.6 eV. How much energy is required to ionize a hydrogen atom which is already in the first excited level?
  A)
   3.4 eV                                 
  done clear
  B)
   10.2 eV
  done clear
  C)
   13.6 eV                               
  done clear
  D)
   1.9 eV
  done clear
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• question_answer58) The ratio of minimum to maximum wavelength in Balmer series is
  A)
   5 : 9   
  done clear
  B)
   5 : 36
  done clear
  C)
   1 : 4                                      
  done clear
  D)
   3 : 4
  done clear
  View Answer play_arrow

• question_answer59) A nucleus \[_{z}^{A}X\] emits an a-particle. The resultant  nucleus emits \[a\text{ }\!\!\beta\!\!\text{ -}\]particle. The respective atomic and mass numbers of the final nucleus will be
  A)
   Z - 3, A - 4                          
  done clear
  B)
   Z -1, A - 4
  done clear
  C)
   Z - 2, A - 4                          
  done clear
  D)
   Z, A - 2
  done clear
  View Answer play_arrow

• question_answer60) What fraction of a radioactive material will get disintegrated in a period of two half-lives?
  A)
   Whole                                 
  done clear
  B)
   Half
  done clear
  C)
   One-fourth                       
  done clear
  D)
   Three-fourth
  done clear
  View Answer play_arrow

• question_answer61) At 0 K, intrinsic semiconductors behaves as
  A)
   a perfect conductor      
  done clear
  B)
   a super conductor
  done clear
  C)
   a semiconductor            
  done clear
  D)
   a perfect insulator
  done clear
  View Answer play_arrow

• question_answer62) To obtain electrons as majority charge carries in a semiconductor, the impurity mixed is
  A)
   monovalent                     
  done clear
  B)
   divalent
  done clear
  C)
   trivalent                             
  done clear
  D)
   pentavalent
  done clear
  View Answer play_arrow

• question_answer63) The ratio of forward biased to reverse biased resistance for p-n junction diode is
  A)
   10-1 :1                                  
  done clear
  B)
   10-2:1
  done clear
  C)
   10-3 :1                                  
  done clear
  D)
   10-2 : 1
  done clear
  View Answer play_arrow

• question_answer64) For germanium crystal, the forbidden energy gap in joule is
  A)
   \[1.12\times {{10}^{-19}}\]
  done clear
  B)
   \[1.76\times {{10}^{-19}}\]
  done clear
  C)
   \[1.6\times {{10}^{-19}}\]   
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer65) The incorrect statement regarding the lines of force of the magnetic field B is
  A)
   magnetic intensity is a measure of lines of force passing through unit area held normal to it
  done clear
  B)
   magnetic lines of force form a close curve
  done clear
  C)
   inside a magnet, its magnetic lines of force move from north pole of a magnet towards its south pole
  done clear
  D)
   magnetic lines of force never cut each other
  done clear
  View Answer play_arrow

• question_answer66) A bar magnet of magnetic moment M and length L is cut into two equal parts each of length L/2. The magnetic moment of each part will be
  A)
   M                                          
  done clear
  B)
   M/4
  done clear
  C)
  \[\sqrt{2M}\]                                    
  done clear
  D)
   M/2
  done clear
  View Answer play_arrow

• question_answer67) When 2 A current is passed through a tangent galvanometer, it gives a deflection of \[30{}^\circ \]. For \[60{}^\circ \] deflection, the current must be
  A)
   1A                                         
  done clear
  B)
   \[2\sqrt{3}\text{A}\]
  done clear
  C)
   4A                                         
  done clear
  D)
   6 A
  done clear
  View Answer play_arrow

• question_answer68) At a certain place the horizontal component of the earth's magnetic field is \[{{B}_{0}}\] and the angle of dip is \[45{}^\circ \]. The total intensity of the field at that place will be
  A)
   \[{{B}_{0}}\]                                     
  done clear
  B)
   \[\sqrt{2}{{B}_{0}}\]
  done clear
  C)
   \[2B_{0}^{{}}\]                                
  done clear
  D)
   \[B_{0}^{2}\]
  done clear
  View Answer play_arrow

• question_answer69) The field at a point distant r from an electric dipole is proportional to
  A)
   1/r                                        
  done clear
  B)
   1/r2
  done clear
  C)
   1/r3                                      
  done clear
  D)
   r2
  done clear
  View Answer play_arrow

• question_answer70) What is the magnitude of a point charge which produces an electric field of 2 N/C at a distance of 60 cm? \[[\frac{1}{4\pi {{\varepsilon }_{0}}}=9\times {{10}^{9}}\text{N-}{{\text{m}}^{\text{2}}}\text{/}{{\text{C}}^{\text{2}}}\text{ }\!\!]\!\!\text{ }\]
  A)
   \[8\times {{10}^{11}}C\]                             
  done clear
  B)
  \[2\times {{10}^{-12}}C\]
  done clear
  C)
   \[3\times {{10}^{-11}}C\]                            
  done clear
  D)
  \[6\times {{10}^{-10}}C\]
  done clear
  View Answer play_arrow

• question_answer71)   As shown in the figure, charges +q and - q are placed at the vertices B and C of an isosceles triangle. The potential at the vertex A is
  A)
  \[\frac{1}{4\pi {{\varepsilon }_{0}}}.\frac{2q}{\sqrt{{{a}^{2}}+{{b}^{2}}}}\]           
  done clear
  B)
  \[\text{zero}\]
  done clear
  C)
  \[\frac{1}{4\pi {{\varepsilon }_{0}}}.\frac{q}{\sqrt{{{a}^{2}}+{{b}^{2}}}}\]              
  done clear
  D)
  \[\frac{1}{4\pi {{\varepsilon }_{0}}}.\frac{(-q)}{\sqrt{{{a}^{2}}+{{b}^{2}}}}\]
  done clear
  View Answer play_arrow

• question_answer72) A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The electric field at the centre of the sphere will be
  A)
   50V/m                                
  done clear
  B)
   10V/m
  done clear
  C)
   5V/m                                   
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer73) Angle between equipotential surface and lines of force is
  A)
   zero                                     
  done clear
  B)
  \[180{}^\circ \]
  done clear
  C)
  \[90{}^\circ \]
  done clear
  D)
  \[45{}^\circ \]
  done clear
  View Answer play_arrow

• question_answer74) After fully charging a parallel plate air capacitor, battery is removed. A dielectric slab is now put between the plates. For this incidence, the correct statement is
  A)
   charge on plates decreases
  done clear
  B)
   charge on plates does not change , potential difference increases
  done clear
  C)
   charge on plates does not change? potential difference decreases and energy stored decreases
  done clear
  D)
   charge on plates does not change, potential difference increases and energy stored also increases
  done clear
  View Answer play_arrow

• question_answer75) A hollow metallic sphere of radius 3 cm 5 charged so that potential on its surface becomes 5 V. The potential at the centre of sphere will be (in volt)
  A)
   zero                                     
  done clear
  B)
   5
  done clear
  C)
   3                                            
  done clear
  D)
   10
  done clear
  View Answer play_arrow

• question_answer76) When a potential is applied across the ends of a linear metallic conductor, then
  A)
   the   free   electrons   are   accelerated continuously from the lower potential end to the higher potential end of the conductor
  done clear
  B)
   the   free   electron   are   accelerated continuously from the higher potential end to the lower potential end of the conductor
  done clear
  C)
   the free electrons acquire a constant drift velocity from the lower potential end to the higher potential end of the conductor
  done clear
  D)
   the free electrons are set in motion from their position of rest
  done clear
  View Answer play_arrow

• question_answer77) In a neon discharge tube\[2.9\times {{10}^{18}}\] Ne ions move to the right each second, while\[1.2\times {{10}^{18}}\] electrons move to the left per sec, electron charge is \[1.6\times {{10}^{-19}}C.\] The current in the discharge tube is
  A)
   1 A towards right            
  done clear
  B)
   0.66 A towards right
  done clear
  C)
   0.66 A towards left
  done clear
  D)
   zero
  done clear
  View Answer play_arrow

• question_answer78) When a resistance of 2\[\Omega \] is connected across the terminals of a cell, the current is 0.5 A. When the resistance is increased to 5\[\Omega ,\] the current is 0.25 A. The emf of the cell is
  A)
   1.0 V                                    
  done clear
  B)
   1.5V
  done clear
  C)
   2.0V                                     
  done clear
  D)
   2.5V
  done clear
  View Answer play_arrow

• question_answer79) An electric heater, kept in vacuum, is heated continuously by passing electric current. Its temperature
  A)
   will go on rising with time
  done clear
  B)
   will stop rising after sometime as it will lose heat to the surroundings by conduction
  done clear
  C)
   will rise for sometime and thereafter will start falling
  done clear
  D)
   will become constant after sometime because of loss of heat due to radiation
  done clear
  View Answer play_arrow

• question_answer80) Heat produced in a wire of resistance R due to current flowing at a constant potential difference is proportional to
  A)
   1/R2                                     
  done clear
  B)
   1/R
  done clear
  C)
   R                                           
  done clear
  D)
   R2
  done clear
  View Answer play_arrow

• question_answer81) There are two electric bulbs of 40 W and 100 W. Which one will be brighter when first they are connected in series and then in parallel
  A)
   40 W in series and 100 W in parallel
  done clear
  B)
   100 W in series and 40 W in parallel
  done clear
  C)
   40 W both in series and parallel will be uniform
  done clear
  D)
   100 W both in series and parallel will be uniform
  done clear
  View Answer play_arrow

• question_answer82) In charging a battery of motor car, the following effect of electric current is used
  A)
   magnetic                           
  done clear
  B)
   heating
  done clear
  C)
   chemical                            
  done clear
  D)
   induction
  done clear
  View Answer play_arrow

• question_answer83) To convert the range of a G ohm resistance voltmeter from V to nV, the value of series resistance needed is
  A)
   \[(n-1)G\]                         
  done clear
  B)
   \[\text{G/}n\]
  done clear
  C)
   \[nG\]                                 
  done clear
  D)
  \[\text{G/}(n-1)\]
  done clear
  View Answer play_arrow

• question_answer84) If the angular momentum of an electron is \[\mathbf{\vec{J}},\] then the magnitude of the magnetic moment will be
  A)
               \[\frac{eJ}{m}\]                                  
  done clear
  B)
              \[\frac{eJ}{2m}\]
  done clear
  C)
              \[eJ2m\]                                 
  done clear
  D)
              \[\frac{2m}{eJ}\]
  done clear
  View Answer play_arrow

• question_answer85) A 100\[\Omega \] galvanometer gives full scale deflection at 10 mA. How much shunt is required to read 100 mA?
  A)
   \[11.11\,\Omega \]                                       
  done clear
  B)
   \[9.9\,\Omega \]
  done clear
  C)
   \[1.1\,\Omega \]                            
  done clear
  D)
   \[4.4\,\Omega \]
  done clear
  View Answer play_arrow

• question_answer86) The ratio of the magnetic field at the centre of a current carrying coil of radius a and at a distance x from centre of the coil on its axial line is a
  A)
   \[\frac{1}{\sqrt{2}}\]                                    
  done clear
  B)
   \[\sqrt{2}\]
  done clear
  C)
   \[\frac{1}{2\sqrt{2}}\]                                  
  done clear
  D)
   \[2\sqrt{2}\]
  done clear
  View Answer play_arrow

• question_answer87) On connecting a battery to the two comers of a diagonal of a square conductor frame of side \[a,\] the magnitude of the magnetic field at the centre will be
  A)
   zero                                     
  done clear
  B)
   \[\frac{{{\mu }_{0}}}{\pi a}\]
  done clear
  C)
  \[\frac{2{{\mu }_{0}}}{\pi a}\]                                   
  done clear
  D)
  \[\frac{4{{\mu }_{0}}i}{\pi a}\]
  done clear
  View Answer play_arrow

• question_answer88) Lorentz force is given by the following formula
  A)
  \[\mathbf{\vec{F}}=q\mathbf{\vec{E}}\]                            
  done clear
  B)
  \[\mathbf{\vec{F}}=q(\mathbf{\vec{V}}\times \mathbf{\vec{B}})\]
  done clear
  C)
  \[\mathbf{\vec{F}}=q\mathbf{\vec{E}}+q(\mathbf{\vec{V}}\times \mathbf{\vec{B}})\]              
  done clear
  D)
  \[\mathbf{\vec{F}}=q\mathbf{\vec{E}}+q(\mathbf{\vec{B}}\times \mathbf{\vec{V}})\]
  done clear
  View Answer play_arrow

• question_answer89) When a charged particle enters in a uniform magnetic field, its kinetic energy
  A)
   remains constant           
  done clear
  B)
   increases
  done clear
  C)
   decreases                         
  done clear
  D)
   becomes zero
  done clear
  View Answer play_arrow

• question_answer90) A long sol enoid has n turns per metre and current \[I\] ampere is flowing through it. The magnetic field at the ends of solenoid is
  A)
   \[\frac{{{\mu }_{0}}nI}{2}\]                                       
  done clear
  B)
   \[{{\mu }_{0}}nI\]
  done clear
  C)
   zero                                     
  done clear
  D)
  \[2{{\mu }_{0}}nI\]
  done clear
  View Answer play_arrow

• question_answer91) Biot-Savart law is given by the following formula [here  k=\[({{\mu }_{0}}\text{/4 }\!\!\pi\!\!\text{ })]\]
  A)
  \[d\,\mathbf{\vec{B}}=ki\frac{d\mathbf{\vec{l}}\times \mathbf{\hat{r}}}{{{r}^{3}}}\]                   
  done clear
  B)
  \[d\,\mathbf{\vec{B}}=k{{i}^{2}}\frac{d\mathbf{\vec{l}}\times \mathbf{\hat{r}}}{{{r}^{3}}}\]
  done clear
  C)
  \[d\,\mathbf{\vec{B}}=ki\frac{d\mathbf{\vec{l}}\times \mathbf{\vec{r}}}{{{r}^{3}}}\]                  
  done clear
  D)
  \[d\,\mathbf{\vec{B}}=ki\frac{\mathbf{\vec{r}}\times d\,\mathbf{\vec{l}}}{{{r}^{2}}}\]
  done clear
  View Answer play_arrow

• question_answer92) A circular coil of 500 turns of wire has an enclosed area of 0.1 m2 per turn. It is kept perpendicular to a magnetic field of induction 0.2 T and rotated by \[180{}^\circ \] about a diameter perpendicular to the field in 0.1 s. How much charge will pass when the coil is connected to a galvanometer with a combined resistance of son?
  A)
   0.2 C                                    
  done clear
  B)
   0.4 C
  done clear
  C)
   2 C                                        
  done clear
  D)
   4 C
  done clear
  View Answer play_arrow

• question_answer93) The self-inductance of a solenoid of length \[l,\] area of cross-section A and having N turns is
  A)
   \[{{\mu }_{0}}{{N}^{2}}\text{A/}l\]                        
  done clear
  B)
   \[{{\mu }_{0}}N\text{A/}l\]
  done clear
  C)
   \[{{\mu }_{0}}{{N}^{2}}l\text{A}\]                          
  done clear
  D)
   \[{{\mu }_{0}}N\text{A}l\]
  done clear
  View Answer play_arrow

• question_answer94) The frequency for which a 5µF capacitor has a reactance of 1/1000\[\Omega \] is given by
  A)
   100/\[\pi \]MHz                              
  done clear
  B)
   1000/\[\pi \]Hz
  done clear
  C)
   1/1000 Hz                          
  done clear
  D)
   1000 Hz
  done clear
  View Answer play_arrow

• question_answer95) The unit of inductance is
  A)
   Volt/Ampere
  done clear
  B)
   Joule/Ampere
  done clear
  C)
   Volt x Second/Ampere
  done clear
  D)
   Volt x Ampere/Second
  done clear
  View Answer play_arrow

• question_answer96) An alternating emf is applied to purely capacitive circuit. The phase relation between emf and current flowing in the circuit is
  A)
   emf is ahead of current by \[\text{ }\!\!\pi\!\!\text{ /2}\]
  done clear
  B)
   current is ahead of emf by\[\text{ }\!\!\pi\!\!\text{ /2}\]
  done clear
  C)
   current lags behind emf by\[\text{ }\!\!\pi\!\!\text{ }\]
  done clear
  D)
   current is ahead of emf by \[\text{ }\!\!\pi\!\!\text{ }\]
  done clear
  View Answer play_arrow

• question_answer97) In a circuit, the value of the alternating current is measured by an ammeter as 10 A. Its peak value will be
  A)
   10 A                                     
  done clear
  B)
   20 A             
  done clear
  C)
   14.14 A                               
  done clear
  D)
   7.07 A
  done clear
  View Answer play_arrow

• question_answer98) In a series L-C-R circuit, operated with an AC are angular frequency a, the total impedance s
  A)
  \[{{[{{R}^{2}}+{{(L\omega -C\omega )}^{2}}]}^{1/2}}\]
  done clear
  B)
  \[{{\left[ {{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}^{1/2}}\]
  done clear
  C)
  \[{{\left[ {{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}^{1/2}}\]
  done clear
  D)
  \[{{\left[ {{(R\omega )}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}^{1/2}}\]
  done clear
  View Answer play_arrow

• question_answer99) In a L-R circuit, the value of L is \[(0.\text{4/ }\!\!\pi\!\!\text{ })\] H sar the value of R  is 30\[\Omega \]. If in circuit, an alternating emf of 200 V at 50 cycle/s is connected, the impedance of the circuit  and current will be
  A)
  11.\[\Omega ,\] 17.5A                  
  done clear
  B)
   30.\[\Omega ,\]6.5A
  done clear
  C)
   40.\[\Omega ,\] 5 A                      
  done clear
  D)
   50\[\Omega ,\] 4 A
  done clear
  View Answer play_arrow

• question_answer100) The coils of a step down transformer have 501 and 5000 turns. In the primary coil an AC of 4 A at 2200 V is sent. The value of the current and potential difference in secondary coil will be
  A)
   20 A, 220V                         
  done clear
  B)
   0.4 A, 22000V
  done clear
  C)
   40 A, 220 V                        
  done clear
  D)
   40 A, 22000 V
  done clear
  View Answer play_arrow

• question_answer101) The maximum number of electrons in an atom with \[l=2\] and \[n=3\] is
  A)
   \[2\]
  done clear
  B)
   \[6\]
  done clear
  C)
   \[12\]                                  
  done clear
  D)
   \[10\]
  done clear
  View Answer play_arrow

• question_answer102) Which of the following expressions gives the de-Broglie relationship?
  A)
   \[\frac{h}{mv}=p\]                        
  done clear
  B)
   \[\lambda =\frac{h}{mv}\]
  done clear
  C)
   \[\lambda =\frac{h}{mp}\]                        
  done clear
  D)
   \[\lambda m=\frac{v}{p}\]
  done clear
  View Answer play_arrow

• question_answer103) What is the electronic configuration: \[C{{u}^{2+}}(Z=29)\] of least position?
  A)
   \[[Ar]4{{s}^{1}},3{{d}^{8}}\]
  done clear
  B)
    \[[Ar]4{{s}^{2}},3{{d}^{10}},4{{p}^{1}}\]
  done clear
  C)
   \[[Ar]4{{s}^{1}},3{{d}^{10}}\]
  done clear
  D)
   \[[Ar]3{{d}^{9}}\]
  done clear
  View Answer play_arrow

• question_answer104) Which of the following orbitals has a dumb-bell shape?
  A)
   \[s\]                                     
  done clear
  B)
   \[p\]
  done clear
  C)
   \[d\]                                    
  done clear
  D)
   \[f\]
  done clear
  View Answer play_arrow

• question_answer105) The electronic configuration of metal M is \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}},\]The formula of its oxide will be
  A)
   \[MO\]                               
  done clear
  B)
   \[{{M}_{2}}O\]
  done clear
  C)
   \[{{M}_{2}}{{O}_{3}}\]                                 
  done clear
  D)
   \[M{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer106) Which of the following statements regarding covalent bond is not true?
  A)
   The electrons are shared between atoms.
  done clear
  B)
   The bond is non-directional.
  done clear
  C)
   The strength of the bond depends upon the extent of overlapping.
  done clear
  D)
   The bonds formed may or may not be polar.
  done clear
  View Answer play_arrow

• question_answer107) Directed bonds in water form an angle of
  A)
   \[{{90}^{o}}\]                                   
  done clear
  B)
   \[{{120}^{o}}\]
  done clear
  C)
   \[{{104.5}^{o}}\]                             
  done clear
  D)
   \[{{60}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer108) Hydrogen bonding is not present in
  A)
   glycerine
  done clear
  B)
   water
  done clear
  C)
   hydrogen sulphide
  done clear
  D)
   hydrogen fluoride
  done clear
  View Answer play_arrow

• question_answer109) \[s{{p}^{3}}\]hybridisation leads to which shape of the molecule?
  A)
   Tetrahedron   
  done clear
  B)
   Octahedron
  done clear
  C)
   Linear         
  done clear
  D)
   Plane triangle
  done clear
  View Answer play_arrow

• question_answer110) Which one of the following is not an ideal solution?
  A)
   \[{{C}_{2}}{{H}_{5}}Br,{{C}_{2}}{{H}_{5}}I\,\,mixture\]
  done clear
  B)
   \[{{C}_{6}}{{H}_{5}}Cl,{{C}_{6}}{{H}_{5}}Br\,mixture\]
  done clear
  C)
   \[{{C}_{6}}{{H}_{6}},{{C}_{6}}{{H}_{5}}C{{H}_{3}}\,mixture\]
  done clear
  D)
   \[{{C}_{2}}{{H}_{5}}I,{{C}_{2}}{{H}_{5}}OH\,mixture\]
  done clear
  View Answer play_arrow

• question_answer111) "The relative lowering of vapour pressure is equal to the mole fraction of the solute." This law is called
  A)
   Henry's law       
  done clear
  B)
   Raoult's law
  done clear
  C)
   Ostwald's law  
  done clear
  D)
   Arrhenius's law
  done clear
  View Answer play_arrow

• question_answer112) The order of osmotic pressures of equimolar solutions of \[BaC{{l}_{2}},\]\[~NaCl\] and glucose will be
  A)
   \[BaC{{l}_{2}}>NaCl>glucose\]
  done clear
  B)
   \[NaCl>BaC{{l}_{2}}>glucose\]
  done clear
  C)
   \[glucose>BaC{{l}_{2}}>NaCl\]
  done clear
  D)
   \[glucose>NaCl>BaC{{l}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer113) Molal depression constant for water is\[{{1.86}^{o}}C\] The freezing point of a \[0.05\]molal solution of a non-electrolyte in water, is
  A)
   \[-{{1.86}^{o}}C\]
  done clear
  B)
   \[-{{0.93}^{o}}C\]
  done clear
  C)
   \[-{{0.093}^{o}}C~\]    
  done clear
  D)
   \[{{0.93}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer114) How many mL of \[1M\] \[{{H}_{2}}S{{O}_{4}}\] is required to neutralise \[10\text{ }mL\]of \[1M\] \[NaOH\]solution?
  A)
   \[2.5\]                                 
  done clear
  B)
   \[5.0\]
  done clear
  C)
   \[10.0\]                              
  done clear
  D)
   \[20.0\]
  done clear
  View Answer play_arrow

• question_answer115) The correct statement in the following is
  A)
   The ionic crystal of \[AgBr\]has Schottky defect
  done clear
  B)
   The unit cell having crystal parameters, \[a=b\ne c,\] \[\alpha =\beta ={{90}^{o}},\] \[\gamma ={{120}^{o}}\]is hexagonal
  done clear
  C)
   In ionic compounds having Frenkel defect, the ratio \[{{r}_{+}}/{{r}_{-}}\] is high
  done clear
  D)
   The coordination number of \[N{{a}^{+}}\] ion in \[NaCl\]is 4
  done clear
  View Answer play_arrow

• question_answer116) The number of atoms in unit cell of \[NaCl\]crystal is
  A)
   \[2\]                                    
  done clear
  B)
   \[4\]
  done clear
  C)
   \[6\]                                    
  done clear
  D)
   \[8\]
  done clear
  View Answer play_arrow

• question_answer117) The average life period of a radioactive element is reciprocal of its
  A)
   half-life period
  done clear
  B)
   disintegration constant
  done clear
  C)
   number of atoms present at any time
  done clear
  D)
   number of neutrons
  done clear
  View Answer play_arrow

• question_answer118) Uranium ultimately decays into a stable isotope of
  A)
   radium                                
  done clear
  B)
   carbon
  done clear
  C)
   lead                                     
  done clear
  D)
   neptunium
  done clear
  View Answer play_arrow

• question_answer119) An isotope \[_{Y}^{X}A\] undergoes a series of m alpha and n beta disintegration to form a stable isotope\[_{Y-10}^{X-32}B\]. The values of m and n are respectively
  A)
   \[6\] and \[8\]                 
  done clear
  B)
   \[8\] and \[10\]
  done clear
  C)
   \[5\] and \[8\]                 
  done clear
  D)
   \[8\] and \[6\]
  done clear
  View Answer play_arrow

• question_answer120) A substance used as a moderator in a nuclear reactor is
  A)
   cadmium      
  done clear
  B)
   uranium-235
  done clear
  C)
   lead          
  done clear
  D)
   heavy water
  done clear
  View Answer play_arrow

• question_answer121) For which one of the following reactions\[{{K}_{p}}={{K}_{c}}\]?
  A)
   \[{{N}_{2}}+3{{H}_{2}}\rightleftharpoons 2N{{H}_{3}}\]
  done clear
  B)
   \[{{N}_{2}}+{{O}_{2}}\rightleftharpoons 2NO\]
  done clear
  C)
   \[PC{{l}_{5}}\rightleftharpoons PC{{l}_{3}}+C{{l}_{2}}\]
  done clear
  D)
   \[2S{{O}_{3}}\rightleftharpoons 2S{{O}_{2}}+{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer122) The equilibrium constant for the reversible reaction, \[{{N}_{2}}+3{{H}_{2}}\rightleftharpoons 2N{{H}_{3}}\] is K and for the reaction \[\frac{1}{2}{{N}_{2}}+\frac{3}{2}{{H}_{2}}\rightleftharpoons N{{H}_{3}},\] the equilibrium constant is \[K'\]. K and \[K'\] will be related as
  A)
   \[K=K'\]
  done clear
  B)
   \[K=\sqrt{K}\]
  done clear
  C)
   \[K=\sqrt{K'}\]
  done clear
  D)
   \[K\times K'=1\]
  done clear
  View Answer play_arrow

• question_answer123) At \[{{20}^{o}}C\]the \[A{{g}^{+}}\] ion concentration in a saturated solution of \[A{{g}_{2}}Cr{{O}_{4}}\] is \[1.5\times {{10}^{-4}}mol/L\]. At \[{{20}^{o}}C\]the solubility product of \[A{{g}_{2}}Cr{{O}_{4}}\] would be
  A)
   \[3.3750\times {{10}^{-12}}~\]
  done clear
  B)
   \[1.6875\times {{10}^{-10}}\]
  done clear
  C)
  \[1.6875\times {{10}^{-12}}\]  
  done clear
  D)
   \[1.6875\times {{10}^{-11}}\]
  done clear
  View Answer play_arrow

• question_answer124) What will be the pH of a \[{{10}^{-8}}M\]\[HCl\] solution?
  A)
   \[8.0\]                                 
  done clear
  B)
   \[7.0\]
  done clear
  C)
   \[6.98\]                              
  done clear
  D)
   \[14.0\]
  done clear
  View Answer play_arrow

• question_answer125) Which of the following can act both as Bronsted acid and a Bronsted base?
  A)
   \[N{{a}_{2}}C{{O}_{3}}\]             
  done clear
  B)
   \[O{{H}^{-}}\]
  done clear
  C)
  \[HC{{O}_{3}}\]                                
  done clear
  D)
   \[N{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer126) What will be the sum of pH and pOH in an aqueous solution?
  A)
   \[7\]                                    
  done clear
  B)
   \[p{{K}_{w}}\]
  done clear
  C)
   Zero                                     
  done clear
  D)
   \[1\]
  done clear
  View Answer play_arrow

• question_answer127) Given that the dissociation constant for \[{{H}_{2}}O\] is \[{{K}_{w}}=1\times {{10}^{-14}}\] what is the pH of a M \[KOH\] solution?
  A)
   \[11\]                                  
  done clear
  B)
   \[3\]
  done clear
  C)
   \[14\]                                  
  done clear
  D)
   \[{{10}^{-11}}\]
  done clear
  View Answer play_arrow

• question_answer128) The relation between \[\Delta G\] and E for cell is \[\Delta G=-nFE;\] the cell reaction will be spontaneous, if
  A)
   G is negative   
  done clear
  B)
   G is positive
  done clear
  C)
   E is negative    
  done clear
  D)
   E is positive
  done clear
  View Answer play_arrow

• question_answer129) For an adiabatic process
  A)
   \[Q=0\]              
  done clear
  B)
   \[Q=-W\]
  done clear
  C)
   \[Q=+W\]          
  done clear
  D)
   \[p\,\Delta V=0\]where Q, W, p and AV denote heat, work, pressure and change in volume respectively.
  done clear
  View Answer play_arrow

• question_answer130) Decrease of free energy of a reacting system points to a/an
  A)
   exothermic reaction
  done clear
  B)
   equilibrium reaction
  done clear
  C)
   spontaneous reaction
  done clear
  D)
   isothermal reaction
  done clear
  View Answer play_arrow

• question_answer131) When a solid is converted into liquid, entropy 
  A)
   becomes zero  
  done clear
  B)
   remains the same
  done clear
  C)
   decreases      
  done clear
  D)
   increases        
  done clear
  View Answer play_arrow

• question_answer132) Carbon and carbon monoxide bum in oxygen  to form carbon dioxide according to the  following reactions                       \[C+{{O}_{2}}\xrightarrow{{}}C{{O}_{2}};\]          \[\Delta H=-394\,kJ\,mo{{l}^{-1}}\] \[2CO+{{O}_{2}}\xrightarrow{{}}2C{{O}_{2}};\]  \[\Delta H=-569\,kJ\,mo{{l}^{-1}}\] The heat of formation of \[1\text{ }mole\]of  monoxide is, thus
  A)
   \[-219.0\text{ }kJ\text{ }mo{{l}^{-1}}\]
  done clear
  B)
   \[-109.5\text{ }kJ\text{ }mo{{l}^{-1}}\]
  done clear
  C)
   \[-175.0\text{ }kJ\text{ }mo{{l}^{-1}}\]
  done clear
  D)
   \[-87.5\text{ }kJ\text{ }mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer133) The thermal decomposition of a compound is  of first order. If a sample of the compound  decomposes 50% in 120 min, in what time will it undergo 90% decomposition?
  A)
   \[Nearly\text{ }240\text{ }min\]
  done clear
  B)
   \[Nearly\text{ }480\text{ }min\]
  done clear
  C)
   \[Nearly\text{ }450\text{ }min\]
  done clear
  D)
   \[Nearly\text{ }400\text{ }min\]
  done clear
  View Answer play_arrow

• question_answer134) The order of a reaction with rate equal to  \[kC_{A}^{3/2}C_{B}^{-1/2},\] is
  A)
   \[2\]                                    
  done clear
  B)
   \[1\]
  done clear
  C)
   \[-\frac{1}{2}\]                                
  done clear
  D)
   \[\frac{3}{2}\]          
  done clear
  View Answer play_arrow

• question_answer135) The unit of cell constant is                
  A)
   \[oh{{m}^{-1}}\,c{{m}^{-1}}\]
  done clear
  B)
   \[ohm\text{ }cm\]
  done clear
  C)
   \[cm~\]         
  done clear
  D)
   \[cm{{~}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer136) The chemical reaction taking place at he anode of a cell is
  A)
   ionisation          
  done clear
  B)
   reduction
  done clear
  C)
   oxidation           
  done clear
  D)
   hydrolysis
  done clear
  View Answer play_arrow

• question_answer137) In dry cell, the reaction which takes place at the graphite anode is
  A)
   \[Z{{n}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Zn(s)\]
  done clear
  B)
   \[Zn(s)+2{{e}^{-}}\xrightarrow{{}}Zn(s)\]
  done clear
  C)
   \[M{{n}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Mn(s)\]
  done clear
  D)
   \[Mn(s)\xrightarrow{{}}M{{n}^{+}}+{{e}^{-}}1.5V\]
  done clear
  View Answer play_arrow

• question_answer138) The metal which gives hydrogen on treatment with acid as well as sodium hydroxide is
  A)
   iron                                      
  done clear
  B)
   zinc
  done clear
  C)
   copper                                
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer139) Chlorine cannot displace
  A)
   fluorine from \[NaF\]
  done clear
  B)
   iodine from \[NaI\]
  done clear
  C)
   bromine from \[NaBr\]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer140) Milk is an example of
  A)
   emulsion      
  done clear
  B)
   suspension
  done clear
  C)
   sol            
  done clear
  D)
   gel
  done clear
  View Answer play_arrow

• question_answer141) Fog is a colloidal system of
  A)
   gas in liquid    
  done clear
  B)
   liquid in gas
  done clear
  C)
   gas in gas       
  done clear
  D)
   solid in gas
  done clear
  View Answer play_arrow

• question_answer142) In physical adsorption, the gas molecules are held on solid surface by
  A)
   chemical forces
  done clear
  B)
   electrostatic forces
  done clear
  C)
   gravitational forces
  done clear
  D)
   van der Waals' forces
  done clear
  View Answer play_arrow

• question_answer143) Hoope's process is used in the refining of
  A)
   \[Al\]                                   
  done clear
  B)
   \[Zn\]
  done clear
  C)
   \[Ag\]                                 
  done clear
  D)
   \[Cu\]
  done clear
  View Answer play_arrow

• question_answer144) Red lead is
  A)
   \[P{{b}_{3}}{{O}_{4}}\]
  done clear
  B)
   \[PbO\]
  done clear
  C)
   \[Pb{{O}_{2}}\]          
  done clear
  D)
   \[P{{b}_{4}}{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer145) Solder metal is
  A)
   \[Pb\text{ + }Sb\]
  done clear
  B)
   \[Pb+Sn\]
  done clear
  C)
   \[Cu+Sn\]
  done clear
  D)
   \[Cu+Zn\]
  done clear
  View Answer play_arrow

• question_answer146) In the manufacture of iron from hematite the function of lime stone is as
  A)
   reducing agent
  done clear
  B)
   flux
  done clear
  C)
   slag           
  done clear
  D)
   gangue
  done clear
  View Answer play_arrow

• question_answer147) Blister copper is
  A)
   pure copper
  done clear
  B)
   copper ore
  done clear
  C)
   2% impure copper
  done clear
  D)
   copper alloy
  done clear
  View Answer play_arrow

• question_answer148) The purest from of iron is
  A)
   cast iron       
  done clear
  B)
   pig iron
  done clear
  C)
   wrought iron   
  done clear
  D)
   steel
  done clear
  View Answer play_arrow

• question_answer149) Who developed the long form of periodic table?
  A)
   Lothar Meyer  
  done clear
  B)
   Neils Bohr
  done clear
  C)
   Mendeleef     
  done clear
  D)
   Moseley
  done clear
  View Answer play_arrow

• question_answer150) The correct sequence of elements in decreasing order of first ionisation energy is
  A)
   \[Na>Mg>Al~\]
  done clear
  B)
   \[Mg>Na>Al\]
  done clear
  C)
   \[Al>Mg>Na~\]
  done clear
  D)
   \[Mg>Al>Na\]
  done clear
  View Answer play_arrow

• question_answer151) Which of the following statements is correct?
  A)
   \[{{X}^{-}}\] ion is larger in size than X atom
  done clear
  B)
   \[{{X}^{+}}\] ion is larger in size than X atom
  done clear
  C)
   \[{{X}^{+}}\] ion is larger in size than \[{{X}^{-}}\] ion
  done clear
  D)
   \[{{X}^{+}}\] and \[{{X}^{-}}\] ions are equal in size
  done clear
  View Answer play_arrow

• question_answer152) The correct order of electron affinity of B, C, N, O is
  A)
   \[O>C>N>B\]
  done clear
  B)
   \[B>N>C>O\]
  done clear
  C)
   \[\text{O}>C>B>N\]
  done clear
  D)
   \[\text{O}>B>C>N\]
  done clear
  View Answer play_arrow

• question_answer153) The ionic radius of which of the following would be maximum?
  A)
   \[{{C}^{4-}}\]                                   
  done clear
  B)
   \[{{N}^{3-}}\]
  done clear
  C)
   \[{{O}^{2-}}\]                                   
  done clear
  D)
   \[M{{g}^{2+}}\]
  done clear
  View Answer play_arrow

• question_answer154) The atomic radius of elements of which of the following series would be nearly the same?
  A)
   \[Na,K,Rb,Cs\]
  done clear
  B)
   \[Li,Be,B,C\]
  done clear
  C)
   \[Fe,Co,Ni,Cu~\]
  done clear
  D)
   \[F,Cl,Br,I\]
  done clear
  View Answer play_arrow

• question_answer155) Gradual addition of electronic shells in the noble gases causes a decrease in their
  A)
   ionisation energy
  done clear
  B)
   atomic radius
  done clear
  C)
   boiling point
  done clear
  D)
   density
  done clear
  View Answer play_arrow

• question_answer156) Monazite is a source of
  A)
   \[Ne\]                                 
  done clear
  B)
   \[Ra\]
  done clear
  C)
   \[Kr\]                                  
  done clear
  D)
   \[Th\]
  done clear
  View Answer play_arrow

• question_answer157) Which forms coloured ion?
  A)
   Metalloids
  done clear
  B)
   Non-metals
  done clear
  C)
   p-block elements
  done clear
  D)
   Transition elements
  done clear
  View Answer play_arrow

• question_answer158) Prussian blue is
  A)
   \[F{{e}_{4}}{{[Fe{{(CN)}_{6}}]}_{3}}\]
  done clear
  B)
   \[F{{e}_{2}}[Fe{{(CN)}_{6}}]\]
  done clear
  C)
   \[F{{e}_{3}}[Fe{{(CN)}_{6}}]\]
  done clear
  D)
   \[Fe{{[Fe{{(CN)}_{6}}]}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer159) The highest oxidation state is shown by that transition element which has outermost configuration as
  A)
   \[{{d}^{3}}{{s}^{2}}\]                                    
  done clear
  B)
   \[{{d}^{5}}{{s}^{1}}\]
  done clear
  C)
   \[{{d}^{5}}{{s}^{2}}\]                                    
  done clear
  D)
   \[{{d}^{8}}{{s}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer160) Which of the following oxides is white but becomes yellow on heating?
  A)
   \[AgO\]                              
  done clear
  B)
   \[A{{g}_{2}}O\]
  done clear
  C)
   \[FeO\]                              
  done clear
  D)
   \[ZnO\]
  done clear
  View Answer play_arrow

• question_answer161) Which of the following ions gives coloured solution?
  A)
   \[C{{u}^{+}}\]                                  
  done clear
  B)
   \[Z{{n}^{2+}}\]
  done clear
  C)
   \[A{{g}^{+}}\]                                  
  done clear
  D)
   \[F{{e}^{2+}}\]
  done clear
  View Answer play_arrow

• question_answer162) On heating \[Mn{{(OH)}_{2}}\] with \[Pb{{O}_{2}}\]and cone. \[HN{{O}_{3}}\] pink colour is obtained due to the formation of
  A)
   \[KMn{{O}_{4}}\]                           
  done clear
  B)
   \[HMn{{O}_{4}}\]
  done clear
  C)
   \[Pb{{(Mn{{O}_{4}})}_{2}}\]      
  done clear
  D)
   \[PbMn{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer163) On the basis of Le-Chatelier's principle, predict which of the following conditions would be unfavorable for the formation of \[S{{O}_{3}}\]? Given that: \[2S{{O}_{2}}+{{O}_{2}}\rightleftharpoons 2S{{O}_{3}}\,\,\Delta H=-42kcal\]
  A)
   Low temperature
  done clear
  B)
   High pressure
  done clear
  C)
   High temperature
  done clear
  D)
   High concentration of \[S{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer164) An element \[(X)\] forms compounds of the formulae \[XC{{l}_{3}},\] \[{{X}_{2}}{{O}_{5}}\] and \[C{{a}_{3}}{{X}_{2}}\] but does not form \[XC{{l}_{5}}\]. Which of the following is the element X?
  A)
   \[B\]                                    
  done clear
  B)
   \[Al\]
  done clear
  C)
   \[N\]                                   
  done clear
  D)
   \[P\]
  done clear
  View Answer play_arrow

• question_answer165) Which of the following oxides of nitrogen reacts with ferrous sulphate to form a dark brown compound?
  A)
   \[{{N}_{2}}O\]                                 
  done clear
  B)
   \[NO\]
  done clear
  C)
   \[N{{O}_{2}}\]                                 
  done clear
  D)
   \[{{N}_{2}}{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer166) Which of the following halogens does not form oxyacid?
  A)
   Fluorine                             
  done clear
  B)
   Chlorine
  done clear
  C)
   Bromine                             
  done clear
  D)
   Iodine
  done clear
  View Answer play_arrow

• question_answer167) The strongest of the following acids, is
  A)
   \[HBr\]                               
  done clear
  B)
   \[HCl\]
  done clear
  C)
   \[HF\]                                 
  done clear
  D)
   \[HI\]
  done clear
  View Answer play_arrow

• question_answer168) Nessler's reagent is
  A)
   \[KHg{{I}_{4}}\]
  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_answer169) Helium is used with oxygen in the apparatus of divers because it
  A)
   is lighter than nitrogen
  done clear
  B)
   is not soluble in blood at high pressure
  done clear
  C)
   is easily available
  done clear
  D)
   is less reactive than nitrogen
  done clear
  View Answer play_arrow

• question_answer170) Which of the following is a favourable facer ' for cation formation?
  A)
   Low ionisation potential
  done clear
  B)
   High electron affinity
  done clear
  C)
   High electronegativity
  done clear
  D)
   Small atomic size
  done clear
  View Answer play_arrow

• question_answer171) Very dilute nitric add reacts with zinc to far- zinc nitrate and
  A)
   amonium nitrate
  done clear
  B)
   \[N{{O}_{2}}\]
  done clear
  C)
   \[NO\]           
  done clear
  D)
   \[~{{N}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer172) Unlike other halogens, fluorine does not show higher oxidation states, because
  A)
   it is highly electronegative
  done clear
  B)
   it has no d-orbitals
  done clear
  C)
   its atomic radius is very small
  done clear
  D)
   The \[{{F}^{-}}\] ion is stable and isoelectronic with  neon
  done clear
  View Answer play_arrow

• question_answer173) Which of the following hydrides has the lowest boiling point?
  A)
   \[{{H}_{2}}O\]                                 
  done clear
  B)
   \[{{H}_{2}}S\]
  done clear
  C)
   \[{{H}_{2}}Se\]                                
  done clear
  D)
   \[{{H}_{2}}Te\]
  done clear
  View Answer play_arrow

• question_answer174) The number of isomers possible for square  planar complex \[{{K}_{2}}[PdClB{{r}_{2}}(SCN)]\] is
  A)
   \[2\]                                    
  done clear
  B)
   \[3\]
  done clear
  C)
   \[4\]                                    
  done clear
  D)
   \[6\]
  done clear
  View Answer play_arrow

• question_answer175) IUPAC name of \[[Co{{(N{{H}_{3}})}_{3}}({{H}_{2}}O)Cl]C{{l}_{2}}\]is
  A)
   Diaquachlorodiaminecobalt (III) chloride
  done clear
  B)
   Triaminediaquachlorocobalt (III) chloride
  done clear
  C)
   Chlorodiaminediaquacobalt (II) chloride
  done clear
  D)
   Diaminediaquachlorocobalt (II) chloride
  done clear
  View Answer play_arrow

• question_answer176) Which of the following exhibits highest molar  conductivity?
  A)
   \[[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]
  done clear
  B)
   \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\]
  done clear
  C)
   \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl\]
  done clear
  D)
   \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]
  done clear
  View Answer play_arrow

• question_answer177) In tris (ethylene diamine) cobalt (III) chloride the coordination number of cobalt is
  A)
   \[3\]                                    
  done clear
  B)
   \[4\]
  done clear
  C)
   \[6\]                                    
  done clear
  D)
   \[7\]
  done clear
  View Answer play_arrow

• question_answer178) The ion that can be precipitated by \[HCl\] as well as \[{{H}_{2}}S\] is
  A)
   \[P{{b}^{2+}}\]                                
  done clear
  B)
   \[F{{e}^{3+}}\]
  done clear
  C)
   \[Z{{n}^{2+}}\]                                
  done clear
  D)
   \[C{{u}^{2+}}\]
  done clear
  View Answer play_arrow

• question_answer179) A salt on treatment with dil. \[HCl\] give: pungent smelling gas and a yellow precipitate The salt gives green flame when tested. The salt solution gives a yellow precipitate with potassium chromate. The salt is
  A)
   \[NiS{{O}_{4}}\]                              
  done clear
  B)
   \[Ba{{S}_{2}}{{O}_{3}}\]
  done clear
  C)
   \[Pb{{S}_{2}}{{O}_{3}}\]              
  done clear
  D)
   \[CuS{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer180) Which of the following is not used as an explosive?
  A)
   Trinitrotoluene
  done clear
  B)
   Trinitrobenzene
  done clear
  C)
   Picric acid      
  done clear
  D)
   Nitrobenzene
  done clear
  View Answer play_arrow

• question_answer181) Which of the following will have geometrical isomers?
  A)
   2-methylpropene
  done clear
  B)
   2-butene
  done clear
  C)
   1-butene       
  done clear
  D)
   Propene
  done clear
  View Answer play_arrow

• question_answer182) Which statement is true for cyclohexane?
  A)
   It has two possible isomers
  done clear
  B)
   It has three conformations
  done clear
  C)
   Boat conformation is most stable
  done clear
  D)
   Chair and boat conformations differ in energy by \[44\text{ }kJ/mol\]
  done clear
  View Answer play_arrow

• question_answer183) A hydrocarbon has \[C\text{ }85.72%\]and remaining H. The hydrocarbon is
  A)
   \[{{C}_{2}}{{H}_{4}}\]                                   
  done clear
  B)
   \[{{C}_{2}}{{H}_{6}}\]
  done clear
  C)
   \[{{C}_{2}}{{H}_{2}}\]                                   
  done clear
  D)
   \[C{{H}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer184) Which of the following has highest octane number?
  A)
   n-hexane
  done clear
  B)
   n-heptane
  done clear
  C)
   iso-octane
  done clear
  D)
   n-heptane and iso-octane mixed in ratio \[50:50\]
  done clear
  View Answer play_arrow

• question_answer185) Which of the following is obtained at lowest temperature by fractional distillation of petroleum?
  A)
   Ligroin                                 
  done clear
  B)
   Gasoline
  done clear
  C)
   Kerosene          
  done clear
  D)
   Diesel oil
  done clear
  View Answer play_arrow

• question_answer186) The order of stability of carbonium ions is
  A)
   \[methyl>ethyl>iso-propyl>tert-butyl\]
  done clear
  B)
   \[tert-butyl>iso-propyl>ethyl>methyl\]
  done clear
  C)
   \[iso-propyl>tert-butyl>ethyl>methyl\]
  done clear
  D)
   \[tert-butyl>ethyl>iso-propyl>methyl\]
  done clear
  View Answer play_arrow

• question_answer187) The compound which gives only acetaldehyde on ozonolysis is
  A)
   butene-1           
  done clear
  B)
   butene-2
  done clear
  C)
   ethylene            
  done clear
  D)
   propylene
  done clear
  View Answer play_arrow

• question_answer188) Which of the following is used to distinguish ethylene and acetylene?
  A)
   Alkaline \[KMn{{O}_{4}}\]
  done clear
  B)
   Bromine water
  done clear
  C)
   Ammoniacal cuprous chloride
  done clear
  D)
   Conc.\[{{H}_{2}}S{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer189) Carbons in the compound l-butene-3-yne are
  A)
   \[sp\] hybridized
  done clear
  B)
   \[s{{p}^{2}}\]hybridized
  done clear
  C)
   \[sp\] and \[s{{p}^{2}}\] hybridized
  done clear
  D)
   \[sp,\] \[s{{p}^{2}}\]and               \[s{{p}^{3}}\]hybridized
  done clear
  View Answer play_arrow

• question_answer190) In nitration of benzene with cone. \[HN{{O}_{3}}\] and cone. \[{{H}_{2}}S{{O}_{4}},\] the species which takes active part is
  A)
   nitrite ion      
  done clear
  B)
   nitrate ion
  done clear
  C)
   nitroniumion  
  done clear
  D)
   nitrogen peroxide
  done clear
  View Answer play_arrow

• question_answer191) Ethyl bromide on treatment with alcoholic \[KOH\] gives
  A)
   ethylene            
  done clear
  B)
   ethanol
  done clear
  C)
   acetic acid         
  done clear
  D)
   ethane
  done clear
  View Answer play_arrow

• question_answer192) \[AgN{{O}_{3}}\] does not give precipitate with chloroform because
  A)
   \[CHC{{1}_{3}}\]is insoluble in water
  done clear
  B)
   \[CHC{{1}_{3}}\]does not ionise in water
  done clear
  C)
   \[CHC{{1}_{3}}\] is an organic compound
  done clear
  D)
   \[AgN{{O}_{3}}\]is insoluble in \[CHC{{1}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer193) Benzene reacts with chlorine to form benzene hex chloride in presence of
  A)
   nickel         
  done clear
  B)
   \[AlC{{l}_{3}}\]
  done clear
  C)
   bright sunlight 
  done clear
  D)
   zinc
  done clear
  View Answer play_arrow

• question_answer194) Which of the following compounds gives a ketone with Grignard reagent?
  A)
   Formaldehyde
  done clear
  B)
   Ethyl alcohol
  done clear
  C)
   Methyl cyanide
  done clear
  D)
   Methyl iodide
  done clear
  View Answer play_arrow

• question_answer195) Which one of the following compounds gives a positive iodofonn test?
  A)
   Pentanal       
  done clear
  B)
   1-phenyl ethanol             
  done clear
  C)
   2-phenyl ethanol
  done clear
  D)
   3-pentanol                   
  done clear
  View Answer play_arrow

• question_answer196) Reaction of acetaldehyde with \[HCN\] followed by hydrolysis gives a compound which shows           
  A)
   optical isomerism
  done clear
  B)
   geometrical isomerism
  done clear
  C)
   metamerism
  done clear
  D)
   tautomerism                                 
  done clear
  View Answer play_arrow

• question_answer197) A compound A has a molecular formula \[{{C}_{2}}C{{l}_{3}}OH\]. It reduces Fehling solution and on oxidation gives a monocarboxylic acid .A is obtained by action of chlorine on ethyl alcohol. A is
  A)
   chloral        
  done clear
  B)
   \[C{{H}_{3}}Cl\]
  done clear
  C)
   \[C{{H}_{3}}Cl\]       
  done clear
  D)
   chloroacetic acid
  done clear
  View Answer play_arrow

• question_answer198) Which of the following is not a synthetic polymer?
  A)
   Polyethylene   
  done clear
  B)
   PVC
  done clear
  C)
   Nylon          
  done clear
  D)
   Cellophane
  done clear
  View Answer play_arrow

• question_answer199) Iodine value is related to
  A)
   fats and oils    
  done clear
  B)
   alcohols
  done clear
  C)
   esters          
  done clear
  D)
   hydrocarbons
  done clear
  View Answer play_arrow

• question_answer200) Deficiency of which vitamin causes rickets?
  A)
   Vitamin C      
  done clear
  B)
   Vitamin D
  done clear
  C)
   Vitamin A     
  done clear
  D)
   Vitamin K
  done clear
  View Answer play_arrow

• question_answer201) Epithelial tissue serves as
  A)
   protective sheath
  done clear
  B)
   reproductive structures
  done clear
  C)
   corpuscle
  done clear
  D)
   nerve cells
  done clear
  View Answer play_arrow

• question_answer202) Muscular tissue is differentiated into
  A)
   unstriped, striped
  done clear
  B)
   striped, cardiac
  done clear
  C)
   unstriped, cardiac muscle
  done clear
  D)
   unstriped, striated and cardiac
  done clear
  View Answer play_arrow

• question_answer203) The units of the nervous system are
  A)
   neurons                             
  done clear
  B)
   dendrites
  done clear
  C)
   axon                                    
  done clear
  D)
   cyton
  done clear
  View Answer play_arrow

• question_answer204) The hardest substance of vertebrate body is
  A)
   keratin                                
  done clear
  B)
   enamel
  done clear
  C)
   dentine                              
  done clear
  D)
   chondrin
  done clear
  View Answer play_arrow

• question_answer205) Role of bone marrow in mammals is
  A)
   to assist kidneys
  done clear
  B)
   to act as haemopoietic tissue
  done clear
  C)
   to assist liver
  done clear
  D)
   to control blood pressure
  done clear
  View Answer play_arrow

• question_answer206) Which of these contains vocal cords?
  A)
   Pharynx                             
  done clear
  B)
   Larynx
  done clear
  C)
   Glottis                                 
  done clear
  D)
   Bronchial tube
  done clear
  View Answer play_arrow

• question_answer207) Which of the following glands is present in frog's skin and not in rabbit's skin?
  A)
   Sebaceous gland            
  done clear
  B)
   Sweat gland
  done clear
  C)
   Mucous gland                  
  done clear
  D)
   Moll's gland
  done clear
  View Answer play_arrow

• question_answer208) How many kinds of cells are found in islets of Langerhans?
  A)
   1                                            
  done clear
  B)
   2
  done clear
  C)
   3                                            
  done clear
  D)
   4
  done clear
  View Answer play_arrow

• question_answer209) Which type of cells secretes \[\text{HCl}\] in stomach'
  A)
   Chief cells                          
  done clear
  B)
   Oxyntic cells
  done clear
  C)
   Peneth cells                     
  done clear
  D)
   Goblet cells
  done clear
  View Answer play_arrow

• question_answer210) The pungent odour of faeces is due to ne presence of
  A)
   indole and skatole
  done clear
  B)
   skatole only
  done clear
  C)
   phenol and hydrogen sulphide
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer211) Which one of the following enzymes initials protein digestion?
  A)
   Amino peptidase           
  done clear
  B)
   Carboxy peptidase
  done clear
  C)
   Trypsin                               
  done clear
  D)
   Pepsin
  done clear
  View Answer play_arrow

• question_answer212) Haemoglobin is having maximum affinity with
  A)
   \[C{{C}_{2}}\]                                  
  done clear
  B)
   CO
  done clear
  C)
   \[{{O}_{2}}\]                                    
  done clear
  D)
   \[N{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer213) 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_answer214) Down's syndrome is
  A)
   autosomal abnormality
  done clear
  B)
   sex chromosomal abnormality
  done clear
  C)
   sex-linked disease
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer215) The wall of heart is made up of
  A)
   epicardium                       
  done clear
  B)
   myocardium
  done clear
  C)
   endocardium                   
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer216) Carbonic anhydrase is present in high concentrations in
  A)
   plasma                                
  done clear
  B)
   erythrocytes
  done clear
  C)
   leucocytes                        
  done clear
  D)
   nephrons
  done clear
  View Answer play_arrow

• question_answer217) How many molecules of oxygen can bound to one molecule of haemoglobin?
  A)
   1                                            
  done clear
  B)
   2
  done clear
  C)
   3                                            
  done clear
  D)
   4
  done clear
  View Answer play_arrow

• question_answer218) Why do we pass more urine in wet and cold season?
  A)
   Impairment of water absorption by nephrons
  done clear
  B)
   Kidney becomes more active
  done clear
  C)
   Sweating is much reduced
  done clear
  D)
   ADH secretion is increased
  done clear
  View Answer play_arrow

• question_answer219) What for the ascending limb of loop of Henie is permeable?
  A)
   Glucose                              
  done clear
  B)
   \[N{{H}_{3}}\]
  done clear
  C)
   Na                                        
  done clear
  D)
   Water
  done clear
  View Answer play_arrow

• question_answer220) Which is the correct explanatory word for the composition of protoplasm?
  A)
   Emulsion
  done clear
  B)
   Suspension
  done clear
  C)
   Complex colloidal solution
  done clear
  D)
   Molecular solution
  done clear
  View Answer play_arrow

• question_answer221) Which part of mammalian brain controls the muscular co-ordination?
  A)
   Cerebrum                         
  done clear
  B)
   Cerebellum
  done clear
  C)
   Corpus callosum             
  done clear
  D)
   Medulla
  done clear
  View Answer play_arrow

• question_answer222) Name of nervous band connecting cerebral hemispheres in rabbit is
  A)
   corpus callosum              
  done clear
  B)
   corpus albicans
  done clear
  C)
   corpus striatum              
  done clear
  D)
   corpus spongiosum
  done clear
  View Answer play_arrow

• question_answer223) Lateral ventricles are found in
  A)
   heart                                   
  done clear
  B)
   brain
  done clear
  C)
   thyroid                               
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer224) In which bee barbless sting is found?
  A)
   Drones                               
  done clear
  B)
   Workers
  done clear
  C)
   Queen bee                       
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer225) When are the identical twins born?
  A)
   One sperm fertilizes two ova
  done clear
  B)
   One ovum is fertilized by two sperms
  done clear
  C)
   Two ova are fertilized by two sperms
  done clear
  D)
   One fertilized ovum divides into two blastomeres and both of them separate
  done clear
  View Answer play_arrow

• question_answer226) One mole glucose, on complete oxidation, yields energy
  A)
   686 cal                                 
  done clear
  B)
   68,600 cal
  done clear
  C)
   6,86,000 cal                       
  done clear
  D)
   68,60,000 cal
  done clear
  View Answer play_arrow

• question_answer227) The points of sperm entry during fertilization forms
  A)
   centre of rotation of embryo
  done clear
  B)
   axis of cleavage
  done clear
  C)
   grey crescent
  done clear
  D)
   dorsal lip of blastopore
  done clear
  View Answer play_arrow

• question_answer228) Seminiferous tubules are found in
  A)
   testis                                   
  done clear
  B)
   ovary
  done clear
  C)
   kidney                                
  done clear
  D)
   lung
  done clear
  View Answer play_arrow

• question_answer229) Corpus luteum is formed in
  A)
   ovary                                   
  done clear
  B)
   testis
  done clear
  C)
   mammary gland             
  done clear
  D)
   uterus
  done clear
  View Answer play_arrow

• question_answer230) Fimbriated funnel is
  A)
   proximal part of oviduct
  done clear
  B)
   uterus part
  done clear
  C)
   urinary bladder part
  done clear
  D)
   ureter part
  done clear
  View Answer play_arrow

• question_answer231) Oogenesis comprises
  A)
   multiplication phase     
  done clear
  B)
   growth phase
  done clear
  C)
   maturation phase          
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer232) Acrosome is found in the sperm at
  A)
   top part                              
  done clear
  B)
   middle piece
  done clear
  C)
   behind the nucleus       
  done clear
  D)
   tail part
  done clear
  View Answer play_arrow

• question_answer233) In mammals, the number of cervical vertebra is
  A)
   5                                            
  done clear
  B)
   7
  done clear
  C)
   10                                         
  done clear
  D)
   12
  done clear
  View Answer play_arrow

• question_answer234) In mammals, the lower jaw is made up of
  A)
   dentaries                           
  done clear
  B)
   maxilla
  done clear
  C)
   premaxilla                         
  done clear
  D)
   palatine
  done clear
  View Answer play_arrow

• question_answer235) In mammals, each half of pectoral girdle consists of
  A)
   supra scapula  
  done clear
  B)
   scapula
  done clear
  C)
   coracoid                             
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer236) In mammals, each half of pelvic girdle consists of
  A)
   ilium                                    
  done clear
  B)
   ischium
  done clear
  C)
   pubis                                   
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer237) Ear drum is known as
  A)
   tympanic membrane    
  done clear
  B)
   tensor tympani
  done clear
  C)
   scala tympani                   
  done clear
  D)
   scala vestibule
  done clear
  View Answer play_arrow

• question_answer238) Function of lacrimal glands is
  A)
   to secrete mucous        
  done clear
  B)
   to secrete tears
  done clear
  C)
   to secrete oil                    
  done clear
  D)
   to secrete fat
  done clear
  View Answer play_arrow

• question_answer239) Life saving hormone is secreted by which gland?
  A)
   Adrenal gland                  
  done clear
  B)
   Hypothalamus
  done clear
  C)
   Pituitary gland                 
  done clear
  D)
   Thyroid gland
  done clear
  View Answer play_arrow

• question_answer240) The disease caused by deficiency of iodine is
  A)
   cretinism                           
  done clear
  B)
   myxedema
  done clear
  C)
   goitre                                  
  done clear
  D)
   tetany
  done clear
  View Answer play_arrow

• question_answer241) The disease caused by deficiency of parathormone is
  A)
   cretinism                           
  done clear
  B)
   tetany
  done clear
  C)
   hypercalemia                   
  done clear
  D)
   myxoedema
  done clear
  View Answer play_arrow

• question_answer242) Cretinism is due to less secretion of
  A)
   thyroid gland                   
  done clear
  B)
   pituitary gland
  done clear
  C)
   parathyroid gland          
  done clear
  D)
   adrenal gland
  done clear
  View Answer play_arrow

• question_answer243) Which endocrine gland becomes inactive in old age?
  A)
   adrenal                               
  done clear
  B)
   pineal
  done clear
  C)
   thymus                               
  done clear
  D)
   pituitary
  done clear
  View Answer play_arrow

• question_answer244) In males, the essential hormone for secondary sexual characteristics is
  A)
   testosterone                   
  done clear
  B)
   progesterone
  done clear
  C)
   estrogen                            
  done clear
  D)
   relaxin
  done clear
  View Answer play_arrow

• question_answer245) In females, the essential hormone for secondary sexual characteristics is
  A)
   testosterone                   
  done clear
  B)
   progesterone
  done clear
  C)
   estrogen                            
  done clear
  D)
   relaxin
  done clear
  View Answer play_arrow

• question_answer246) Pellagra disease is caused due to deficiency of vitamin
  A)
   B                           
  done clear
  B)
   C
  done clear
  C)
   D                                           
  done clear
  D)
   E
  done clear
  View Answer play_arrow

• question_answer247) Submucosa is thickest in
  A)
   stomach                             
  done clear
  B)
   oesophagus
  done clear
  C)
   intestine                            
  done clear
  D)
   rectum
  done clear
  View Answer play_arrow

• question_answer248) Mineral deposition in bones and teeth is due to vitamin
  A)
   D                                           
  done clear
  B)
   A
  done clear
  C)
   C                                           
  done clear
  D)
   E
  done clear
  View Answer play_arrow

• question_answer249) Which is the urinary bladder of the child placed in the womb?
  A)
   Urinary bladder              
  done clear
  B)
   Amnion
  done clear
  C)
   Allantois                             
  done clear
  D)
   Liver            
  done clear
  View Answer play_arrow

• question_answer250) What is the cause of haemophilia?
  A)
  Chromosomal aberration
  done clear
  B)
  Somatic mutation
  done clear
  C)
  X-linked mutation
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer251) The term blastocyst is applied to the blastula of which one of the following?
  A)
   Kangaroo           
  done clear
  B)
   Platypus
  done clear
  C)
   Monkey                             
  done clear
  D)
   Both [a] and [c]
  done clear
  View Answer play_arrow

• question_answer252) The outer layer of the blastocyst which forms the ectoderm, is called
  A)
   cnidoblast                         
  done clear
  B)
   germinal vesicle
  done clear
  C)
   trophoblast                      
  done clear
  D)
   amnion
  done clear
  View Answer play_arrow

• question_answer253) The foetal membrane, which is the source of first blood corpuscle to enter the circulation the embryo, is called
  A)
   amnion                                 
  done clear
  B)
   chorion          
  done clear
  C)
   trophoblast                      
  done clear
  D)
   yolk sac
  done clear
  View Answer play_arrow

• question_answer254) Growth in most warm blooded vertebrates is
  A)
   determinate                    
  done clear
  B)
   indeterminate
  done clear
  C)
   uncontrolled                    
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer255) The ability of animals to regenerate the lost parts of the body was reported by
  A)
   Carlson                               
  done clear
  B)
   Trembley
  done clear
  C)
   Patten                                
  done clear
  D)
   Storer
  done clear
  View Answer play_arrow

• question_answer256) Improvement of genetic characters and present day generation on the basis of best nutrition and training is called
  A)
   Eugenics                            
  done clear
  B)
   Euphenics
  done clear
  C)
   Euthenics                          
  done clear
  D)
   Gerontology
  done clear
  View Answer play_arrow

• question_answer257) The 'Cell theory" states that
  A)
   all cells have nuclei
  done clear
  B)
   cells are the fundamental structural mat of plants and animals
  done clear
  C)
   all cells are living
  done clear
  D)
   cells reproduce by mitosis and meiosis
  done clear
  View Answer play_arrow

• question_answer258) Structure present over the chromosomes is
  A)
   nucleolus                           
  done clear
  B)
   centromere
  done clear
  C)
   centrosome                     
  done clear
  D)
   Golgi complex
  done clear
  View Answer play_arrow

• question_answer259) Normally the number of chromosomes in the nuclei of gametes that fuse at fertilization are
  A)
   innumerable   
  done clear
  B)
   dissimilar
  done clear
  C)
   similar                                 
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer260) Balbiani   discovered   special   type   of chromosome from the salivary gland of Chironomus larva, which are recognized by the presence of
  A)
   bands                                  
  done clear
  B)
   loops
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer261) The technique which makes use of amniotic fluid for the detection of foetal disorders, is called as
  A)
   endoscopy                        
  done clear
  B)
   laproscopy
  done clear
  C)
   natal endoscopy             
  done clear
  D)
   amniocentesis
  done clear
  View Answer play_arrow

• question_answer262) Which of the following is not related to chromosomal aberration?
  A)
   Euploidy
  done clear
  B)
   AIDS
  done clear
  C)
   Aneuploidy
  done clear
  D)
   Klinefelter's syndrome
  done clear
  View Answer play_arrow

• question_answer263) Immediately after ovulation, the mammalian egg is covered by an outermost membrane, called as
  A)
   vitelline membrane      
  done clear
  B)
   chorion
  done clear
  C)
   zona pellucid                    
  done clear
  D)
   corona radiate
  done clear
  View Answer play_arrow

• question_answer264) The number of autosomes in man is
  A)
   22 pairs               
  done clear
  B)
   11 pairs
  done clear
  C)
   43 pairs                               
  done clear
  D)
   23 pairs
  done clear
  View Answer play_arrow

• question_answer265) Supermale    and    super female    type determination of sex in Drosophila is base on
  A)
   genie balance                  
  done clear
  B)
   oxygen balance
  done clear
  C)
   biodiversity                      
  done clear
  D)
   uniformity
  done clear
  View Answer play_arrow

• question_answer266) A girl of normal vision whose father was colourblind marries a man of normal vision whose father was also colourblind. Their sons would be (of total number of sons).
  A)
   all colourblind                  
  done clear
  B)
   50% colourblind
  done clear
  C)
   all normal                          
  done clear
  D)
   25% colourblind
  done clear
  View Answer play_arrow

• question_answer267) Marriage between one of the following pairs may cause child death
  A)
   \[R{{h}^{+}}\] father and \[R{{h}^{-}}\]mother
  done clear
  B)
   \[K{{h}^{+}}\] father and \[R{{h}^{+}}\]mother
  done clear
  C)
   \[R{{h}^{-}}\] father and \[R{{h}^{-}}\] mother
  done clear
  D)
  \[R{{h}^{-}}\] father and \[R{{h}^{+}}\]mother
  done clear
  View Answer play_arrow

• question_answer268) Donors and recipients in a blood transfusion process can be
  A)
   only father and son
  done clear
  B)
   only brother and sister
  done clear
  C)
   only maternal uncle and niece
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer269) Which one of the following is not a mutagen?
  A)
   Acetic acid                         
  done clear
  B)
   Hydroxylamine
  done clear
  C)
   Nitrous acid                      
  done clear
  D)
   Gamma rays
  done clear
  View Answer play_arrow

• question_answer270) The enzyme which can cut molecules of DNA into segments is known as
  A)
   DNA polymerase            
  done clear
  B)
   DNA ligase
  done clear
  C)
   Restriction enzyme       
  done clear
  D)
   DNA gyrase
  done clear
  View Answer play_arrow

• question_answer271) Point mutation is a change, which involves
  A)
   loss of a gene
  done clear
  B)
   addition of a gene
  done clear
  C)
   deletion of a segment of a gene
  done clear
  D)
   change in a base of a gene
  done clear
  View Answer play_arrow

• question_answer272) The percentage ratio of natality over mortality is called
  A)
   vital index
  done clear
  B)
   population density
  done clear
  C)
   total count of individuals
  done clear
  D)
   fertility rate
  done clear
  View Answer play_arrow

• question_answer273) Which is non-poisonous?
  A)
   Spider                                 
  done clear
  B)
   Scorpion
  done clear
  C)
   Centipede                         
  done clear
  D)
   Crab
  done clear
  View Answer play_arrow

• question_answer274) Electric organs are found in
  A)
   sharks                                 
  done clear
  B)
   porpoises
  done clear
  C)
   goldfish                              
  done clear
  D)
   rays
  done clear
  View Answer play_arrow

• question_answer275) Which monkey has prehensile tail?
  A)
   Spider monkey               
  done clear
  B)
   Semnopithecus
  done clear
  C)
   Rhesus monkey              
  done clear
  D)
   Boinnet monkey
  done clear
  View Answer play_arrow

• question_answer276) Which of the following is in tracheate group?
  A)
   Crab-centipede-cockroach
  done clear
  B)
   King Crab-scorpion-housefly
  done clear
  C)
   Spider-Peripatus-mosquito
  done clear
  D)
   Bedbug-sandfly-silkworm
  done clear
  View Answer play_arrow

• question_answer277) Which is filter feeder?
  A)
   Amoeba                             
  done clear
  B)
   Leech
  done clear
  C)
   Spider                                 
  done clear
  D)
   Paramedum
  done clear
  View Answer play_arrow

• question_answer278) Whose skin colour does not change?
  A)
   Chamaeleon    
  done clear
  B)
   Horse
  done clear
  C)
   Garden lizard  
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer279) 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_answer280) Which one of the following scientists is not related with organic evolution?
  A)
   Erasmus Darwin              
  done clear
  B)
   Charles Darwin
  done clear
  C)
   Darlington                         
  done clear
  D)
   TR Malthus
  done clear
  View Answer play_arrow

• question_answer281) Modemtheory of organic evolution is based on
  A)
   population                        
  done clear
  B)
   mutation
  done clear
  C)
   isolation                             
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer282) A vestigial organ of man is
  A)
   vermiform appendix    
  done clear
  B)
   sebaceous gland
  done clear
  C)
   pelvic girdle                      
  done clear
  D)
   mammary gland
  done clear
  View Answer play_arrow

• question_answer283) The wings of an insect and a bat exhibit
  A)
   homology                          
  done clear
  B)
   analogy
  done clear
  C)
   atavism                              
  done clear
  D)
   connecting link
  done clear
  View Answer play_arrow

• question_answer284) The material for organic evolution is
  A)
   effect of hormones      
  done clear
  B)
   nutritive value
  done clear
  C)
   mutation                           
  done clear
  D)
   asexual reproduction
  done clear
  View Answer play_arrow

• question_answer285) The nearest prehistoric ancestor of present man may be
  A)
   Java ape man                   
  done clear
  B)
   Cro-magnon man
  done clear
  C)
   Neanderthal man          
  done clear
  D)
   Peking man
  done clear
  View Answer play_arrow

• question_answer286) Silkworm is a
  A)
   fly                                         
  done clear
  B)
   worm
  done clear
  C)
   moth                                   
  done clear
  D)
   beetle
  done clear
  View Answer play_arrow

• question_answer287) Who is referred to as father of pearl industry ?
  A)
   Ivanowski                          
  done clear
  B)
   Louis Pasteur
  done clear
  C)
   Kokichi Mikimoto           
  done clear
  D)
   Harvey
  done clear
  View Answer play_arrow

• question_answer288) Plasmodium in man is inoculated by
  A)
   Anopheles male              
  done clear
  B)
   Anopheles female
  done clear
  C)
   Culex female                    
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer289)  'Malaria', a common disease worldwide, b caused by a
  A)
   bacterium                         
  done clear
  B)
   virion
  done clear
  C)
   Protozoa                            
  done clear
  D)
   helminthes
  done clear
  View Answer play_arrow

• question_answer290) HIV causes reduction in
  A)
   T-helper cells only         
  done clear
  B)
   All T-cells
  done clear
  C)
   B-cells only                       
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer291) Biological name of insect (vector) carrying the plague is
  A)
   Xenopsylla cheopis        
  done clear
  B)
   Anopheles mosquito
  done clear
  C)
   Bacillus pestis                  
  done clear
  D)
   Pediculus humanus
  done clear
  View Answer play_arrow

• question_answer292) A molecule that elicites an immune response is called
  A)
   antibody                            
  done clear
  B)
   antigen
  done clear
  C)
   mutagen                            
  done clear
  D)
   carcinogen
  done clear
  View Answer play_arrow

• question_answer293) Malarial parasite completes its life-cycle in
  A)
   one host                            
  done clear
  B)
   two hosts
  done clear
  C)
   three hosts                       
  done clear
  D)
   reservoir host
  done clear
  View Answer play_arrow

• question_answer294) Metabolic waste responsible for malaria fever is called
  A)
   haemozoin                       
  done clear
  B)
   haematin
  done clear
  C)
   melanin                              
  done clear
  D)
   heparin
  done clear
  View Answer play_arrow

• question_answer295) A pearl oyster secretes pearls to
  A)
   regenerate injured parts
  done clear
  B)
   protect itself against invading parasite
  done clear
  C)
   harden its mantle cavity
  done clear
  D)
   isolate damaged tissues of the body
  done clear
  View Answer play_arrow

• question_answer296) Addiction to tobacco is caused by the presence of
  A)
   caffiene                             
  done clear
  B)
   nicotine
  done clear
  C)
   cocaine                               
  done clear
  D)
   histamine
  done clear
  View Answer play_arrow

• question_answer297) Which of the following organ is most affected by alcohol?
  A)
   Kidney                                
  done clear
  B)
   Heart
  done clear
  C)
   Liver                                    
  done clear
  D)
   Lungs
  done clear
  View Answer play_arrow

• question_answer298) Kanha National Park is famous for
  A)
   birds                                    
  done clear
  B)
   rhinoceros
  done clear
  C)
   tigers                                   
  done clear
  D)
   crocodiles
  done clear
  View Answer play_arrow

• question_answer299)  Malathion, parathion and fenitrothion belong to the group of
  A)
   carbamates                      
  done clear
  B)
   organophosphates
  done clear
  C)
   pyrethroids                      
  done clear
  D)
   marines
  done clear
  View Answer play_arrow

• question_answer300) Which of the following when dissolved in water make (s) Bordeaux mixture?
  A)
   Copper sulphate            
  done clear
  B)
   Calcium oxide
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer301) The significance of meiosis lies in
  A)
   maintaining constancy in the number of chromosomes in an organism
  done clear
  B)
   production of genetic variability in the population of species
  done clear
  C)
   Reduction of the diploid number of chromosomes to haploid
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer302) Which among the following can be seen only under the electron microscope?
  A)
   Chloroplast                       
  done clear
  B)
   Ribosome
  done clear
  C)
   Leucoplast                        
  done clear
  D)
   Nucleus
  done clear
  View Answer play_arrow

• question_answer303) The name 'protoplasm' was given by
  A)
   Hooke                                 
  done clear
  B)
   A K Sharma
  done clear
  C)
   Schwann                            
  done clear
  D)
   Purkinje
  done clear
  View Answer play_arrow

• question_answer304) A mature plant cell has
  A)
   cell wall and protoplasm
  done clear
  B)
   protoplasm and vacuole
  done clear
  C)
   vacuole and cell wall
  done clear
  D)
   Both [b] and [c]
  done clear
  View Answer play_arrow

• question_answer305) The larger sub-unit in 80S ribosome is
  A)
   50S                                       
  done clear
  B)
   60S
  done clear
  C)
   40S                                       
  done clear
  D)
   0S
  done clear
  View Answer play_arrow

• question_answer306) Golgi bodies are absent in
  A)
   plants                                  
  done clear
  B)
   bacteria
  done clear
  C)
   animals                               
  done clear
  D)
   eukaryotic cells
  done clear
  View Answer play_arrow

• question_answer307) Endoplasmic reticulum is more developed in
  A)
   green cells        
  done clear
  B)
   young cells
  done clear
  C)
   mature cells    
  done clear
  D)
   bacteriophage
  done clear
  View Answer play_arrow

• question_answer308) Mitochondria are related to
  A)
   prokaryotes                     
  done clear
  B)
   plasmids
  done clear
  C)
   plastids                               
  done clear
  D)
   viruses
  done clear
  View Answer play_arrow

• question_answer309) The main function of lysosomes is
  A)
   digestion                           
  done clear
  B)
   replication
  done clear
  C)
   translation                        
  done clear
  D)
   translocation
  done clear
  View Answer play_arrow

• question_answer310) The physical basis of life is
  A)
   nucleus                              
  done clear
  B)
   sex chromosomes
  done clear
  C)
   protoplasm                       
  done clear
  D)
   DNA
  done clear
  View Answer play_arrow

• question_answer311) Which of the following has a single membrane?
  A)
   Ribosome                          
  done clear
  B)
   Peroxisome
  done clear
  C)
   Nucleolus                          
  done clear
  D)
   Centrosome
  done clear
  View Answer play_arrow

• question_answer312) DNA molecules of each chromosome become double in
  A)
  \[{{\text{G}}_{\text{1}}}\text{-}\]phase                              
  done clear
  B)
   \[{{\text{G}}_{2}}\text{-}\]phase
  done clear
  C)
   S-phase                              
  done clear
  D)
   M-phase
  done clear
  View Answer play_arrow

• question_answer313) L-shaped chromosomes are called
  A)
   sex-chromosome          
  done clear
  B)
   acrocentric
  done clear
  C)
   telocentric                        
  done clear
  D)
   sub-metacentric
  done clear
  View Answer play_arrow

• question_answer314) Pairing of homologous chromosomes takes place in
  A)
   pachytene                        
  done clear
  B)
   zygotene
  done clear
  C)
   diplotene                          
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer315) How many meiotic divisions will be necessary to produce two hundred pollen grains?
  A)
   100                                       
  done clear
  B)
   199
  done clear
  C)
   50                                         
  done clear
  D)
   200
  done clear
  View Answer play_arrow

• question_answer316) Which of the following is a purine ?
  A)
   Prokaryotes                     
  done clear
  B)
   Guanine
  done clear
  C)
   Thymine                            
  done clear
  D)
   Uracil
  done clear
  View Answer play_arrow

• question_answer317) Which type of ribosomes are found in Nostoc cells?
  A)
   50S                                       
  done clear
  B)
   60S
  done clear
  C)
   70S                                       
  done clear
  D)
   Eukaryotic
  done clear
  View Answer play_arrow

• question_answer318) A change in the chromosome number is called
  A)
   chromosomal mutation
  done clear
  B)
   gene mutation
  done clear
  C)
   somatic mutation
  done clear
  D)
   polyploidy
  done clear
  View Answer play_arrow

• question_answer319) Who coined the term 'chromosome'?
  A)
   Balbiani                              
  done clear
  B)
   Waldeyer
  done clear
  C)
   Sutton                                
  done clear
  D)
   Purkinje
  done clear
  View Answer play_arrow

• question_answer320) A   chromosome   having   sub-terminal centromere is called
  A)
   telocentric                        
  done clear
  B)
   acrocentric
  done clear
  C)
   metacentric                      
  done clear
  D)
   sub-metacentric
  done clear
  View Answer play_arrow

• question_answer321) How many pairs of contrasting characters were chosen by Mendel for his study with garden pea?
  A)
   3                                            
  done clear
  B)
   5
  done clear
  C)
   7                                            
  done clear
  D)
   14
  done clear
  View Answer play_arrow

• question_answer322) The term 'all elomorphic' implies
  A)
   any two characters
  done clear
  B)
   a pair of contrasting characters
  done clear
  C)
   sex-linked characters
  done clear
  D)
   a pair of non-contrasting characters
  done clear
  View Answer play_arrow

• question_answer323) If a homozygous red flowered plant is crossed with a homozygous white-flowered plant, the offspring will be
  A)
   all red flowered              
  done clear
  B)
   all white flowered
  done clear
  C)
   half red flowered           
  done clear
  D)
   half white flowered
  done clear
  View Answer play_arrow

• question_answer324) An asexually produced organism inheriting all the characters of its parent is called
  A)
   clone                                   
  done clear
  B)
   offspring
  done clear
  C)
   hybrid                                 
  done clear
  D)
   variety
  done clear
  View Answer play_arrow

• question_answer325) What would be the colour of flowers in \[{{F}_{1}}\] progeny as a result of a cross between homozygous red and homozygous white flowered snapdragon?
  A)
   Red                                      
  done clear
  B)
   White
  done clear
  C)
   Both [a] and                     
  done clear
  D)
   [d] Pink
  done clear
  View Answer play_arrow

• question_answer326) 26.      Who postulated the 'chromosomal theory of \[{{F}_{1}}\]inheritance'?            
  A)
   de Vries                             
  done clear
  B)
   Mendel
  done clear
  C)
   Sutton and Boveri          
  done clear
  D)
   Morgan
  done clear
  View Answer play_arrow

• question_answer327) Drosophila melanogaster has
  A)
   2 pairs of autosomes and 1 pair of us chromosomes
  done clear
  B)
   3 pairs of autosomes and 1 pair of sex chromosomes
  done clear
  C)
   1 pair of autosomes and 3 pairs of sex chromosomes
  done clear
  D)
   2 pairs of autosomes and 2 pairs of  sex  chromosomes
  done clear
  View Answer play_arrow

• question_answer328) The nature of DNA replication is
  A)
   conservative                    
  done clear
  B)
   non-conservative
  done clear
  C)
   semi-conservative         
  done clear
  D)
   cyanobacteria
  done clear
  View Answer play_arrow

• question_answer329) Transformation in bacteria was first discovered by
  A)
   Lederberg                         
  done clear
  B)
   Griffith
  done clear
  C)
   Fimbriae                            
  done clear
  D)
   Tatum
  done clear
  View Answer play_arrow

• question_answer330) The drug streptomycin inhibits the process of
  A)
   prokaryotic translation
  done clear
  B)
   eukaryotic translation
  done clear
  C)
   prokaryotic transcription
  done clear
  D)
   eukaryotic transcription
  done clear
  View Answer play_arrow

• question_answer331) The sexuality in bacteria was established by
  A)
   Lederberg and Tatum  
  done clear
  B)
   H J Muller
  done clear
  C)
   Hargobind Khorana       
  done clear
  D)
   Ochoa and Kornberg
  done clear
  View Answer play_arrow

• question_answer332) The N2 fixing bacterium associated with root nodules of legumes is known as
  A)
   Azotobacter    
  done clear
  B)
   Nitrobacter
  done clear
  C)
   Lactobacillus     
  done clear
  D)
   Rhizobium
  done clear
  View Answer play_arrow

• question_answer333) The filterable property of Tobacco Mosaic  Virus (TMV) was shown by
  A)
   Ivanowski                          
  done clear
  B)
   Beijerinck
  done clear
  C)
   Stanley                               
  done clear
  D)
   Winogradsky
  done clear
  View Answer play_arrow

• question_answer334) The bacteria which convert nitrate on molecular nitrogen are called
  A)
   nitrifying bacteria           
  done clear
  B)
   methanobacteria
  done clear
  C)
   diazotrophic bacteria    
  done clear
  D)
   denitrifying bacteria
  done clear
  View Answer play_arrow

• question_answer335) Endosulphon is a
  A)
   herbicide                           
  done clear
  B)
   weedicide
  done clear
  C)
   rodenticide                       
  done clear
  D)
   pesticide
  done clear
  View Answer play_arrow

• question_answer336) The germ theory of disease was propounded by
  A)
   Koch                                    
  done clear
  B)
   Pasteur
  done clear
  C)
   Rayer                                  
  done clear
  D)
   Devaine
  done clear
  View Answer play_arrow

• question_answer337) Interferons are useful in controlling
  A)
   TB                                         
  done clear
  B)
   cancer
  done clear
  C)
   malaria                               
  done clear
  D)
   blood pressure
  done clear
  View Answer play_arrow

• question_answer338) Yeast is used in the formation of
  A)
   ammonia                           
  done clear
  B)
   alcohol
  done clear
  C)
   curd                                     
  done clear
  D)
   petrol
  done clear
  View Answer play_arrow

• question_answer339) Fermentation is represented by equation
  A)
   \[{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{12}}}{{\text{O}}_{\text{6}}}\text{+}\,\text{6}{{\text{0}}_{\text{2}}}\to \text{6C}{{\text{O}}_{\text{2}}}\text{+}\,\text{6}{{\text{H}}_{\text{2}}}\text{+}\,\text{673}\,\text{kcal}\]
  done clear
  B)
  \[{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{12}}}{{\text{O}}_{\text{6}}}\xrightarrow{{}}\text{2}{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}\text{OH+}\,\text{2C}{{\text{O}}_{\text{2}}}\text{+}21\,\text{kcal}\]
  done clear
  C)
   \[6C{{O}_{2}}+12{{H}_{2}}O\to {{\text{C}}_{6}}{{\text{H}}_{12}}{{\text{O}}_{\text{2}}}+{{60}_{2}}\,\]
  done clear
  D)
   \[\text{6C}{{\text{O}}_{\text{2}}}\text{+6}{{\text{H}}_{\text{2}}}\text{O}\frac{\text{Light}}{\text{Chlorophyll}}{{\text{C}}_{\text{6}}}{{\text{H}}_{\text{12}}}{{\text{O}}_{\text{6}}}\text{+6}{{\text{0}}_{\text{2}}}\,\]
  done clear
  View Answer play_arrow

• question_answer340) Common bread mould is
  A)
   yeast                                   
  done clear
  B)
   Mucor
  done clear
  C)
   bacteria                              
  done clear
  D)
   virus
  done clear
  View Answer play_arrow

• question_answer341) Viruses contain
  A)
   only DNA                           
  done clear
  B)
   only RNA
  done clear
  C)
   either DNA or RNA        
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer342) The nitrogen fixation by Nostoc takes place in
  A)
   vegetative cells               
  done clear
  B)
   akinetes
  done clear
  C)
   heterocysts                      
  done clear
  D)
   hormogonia
  done clear
  View Answer play_arrow

• question_answer343) The smallest free-living organism is
  A)
   virus                                    
  done clear
  B)
   mycoplasma
  done clear
  C)
   cyanobacteria                  
  done clear
  D)
   bacteria
  done clear
  View Answer play_arrow

• question_answer344) The bacterium capable of anaerobic N2 fixation is known as
  A)
   Clostridium                       
  done clear
  B)
   Bacillus
  done clear
  C)
   Azotobacter                     
  done clear
  D)
   Khizobium
  done clear
  View Answer play_arrow

• question_answer345) Cyanophages attack
  A)
   cyanobacteria                  
  done clear
  B)
   bacteria
  done clear
  C)
   fungi                                    
  done clear
  D)
   lichens
  done clear
  View Answer play_arrow

• question_answer346) The bacterial genome contains
  A)
   DNA and histone            
  done clear
  B)
   DNA or histone
  done clear
  C)
   DNA without histone
  done clear
  D)
   Neither DNA nor histone
  done clear
  View Answer play_arrow

• question_answer347) Which one of the following statements is correct?
  A)
   Viruses are obligate parasites
  done clear
  B)
   All fungi are pathogenic
  done clear
  C)
   All algae are eukaryotic
  done clear
  D)
   Bacteria are always harmful to mankind
  done clear
  View Answer play_arrow

• question_answer348) The characteristic pigment of cyanobacteria is
  A)
   fucoxanthin                      
  done clear
  B)
   chl-b
  done clear
  C)
   anthocyanin    
  done clear
  D)
   phycocyanin
  done clear
  View Answer play_arrow

• question_answer349) An antiviral chemical produced by the animal cell is
  A)
   virion                                   
  done clear
  B)
   interferon
  done clear
  C)
   represser protein          
  done clear
  D)
   hormone
  done clear
  View Answer play_arrow

• question_answer350) The division of the plant kingdom into Prokaryota and Eukaryota is based on the character of
  A)
   nucleus only                     
  done clear
  B)
   chromosomes only
  done clear
  C)
   cell organelles only        
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer351) Who is credited with the introduction of binomial system of nomenclature of plants?
  A)
   Linnaeus                            
  done clear
  B)
   John Ray
  done clear
  C)
   Bentham and Hooker   
  done clear
  D)
   Aristotle
  done clear
  View Answer play_arrow

• question_answer352) Sexual reproduction in Spirogyra is morpho logically characterized by
  A)
   oogamy                              
  done clear
  B)
   anisogamy
  done clear
  C)
   isogamy                             
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer353) The moss plants develop from
  A)
   diploid spores                  
  done clear
  B)
   protonema
  done clear
  C)
   oospores                           
  done clear
  D)
   antherozoids
  done clear
  View Answer play_arrow

• question_answer354) Zygospores are formed in?
  A)
   Puccinia                              
  done clear
  B)
   Penidllium
  done clear
  C)
   Altemaria                          
  done clear
  D)
   Mucor
  done clear
  View Answer play_arrow

• question_answer355) Fern plant is a
  A)
   haploid gametophyte 
  done clear
  B)
   diploid gametophyte
  done clear
  C)
   diploid sporophyte      
  done clear
  D)
   haploid sporophyte
  done clear
  View Answer play_arrow

• question_answer356) How much time is generally required/taken by the pine plant from pollination to fertilization?
  A)
   Four months   
  done clear
  B)
   Twelve months
  done clear
  C)
   Two years                         
  done clear
  D)
   Four years
  done clear
  View Answer play_arrow

• question_answer357) Pyrenoids are characteristically found in the chloroplast of
  A)
   fungi                                    
  done clear
  B)
   algae
  done clear
  C)
   pteridophytes                 
  done clear
  D)
   angiosperms
  done clear
  View Answer play_arrow

• question_answer358) Caruncle is formed by
  A)
   peduncle                           
  done clear
  B)
   cotyledons
  done clear
  C)
   integument                      
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer359) Perisperm is
  A)
   outer part of endosperm
  done clear
  B)
   destroyed synergids
  done clear
  C)
   destroyed secondary nucleus
  done clear
  D)
   remains of nucellus
  done clear
  View Answer play_arrow

• question_answer360) In pea, the ovule is
  A)
   hemianatropous            
  done clear
  B)
   amphitropous
  done clear
  C)
   anatropous                       
  done clear
  D)
   campylotropous
  done clear
  View Answer play_arrow

• question_answer361) The point where funicle joins with ovule is known as
  A)
   chalaza                               
  done clear
  B)
   hilum
  done clear
  C)
   integument                      
  done clear
  D)
   micropyle
  done clear
  View Answer play_arrow

• question_answer362) Aerenchyma is formed in the tissue of
  A)
   sclerenchyma                  
  done clear
  B)
   parenchyma
  done clear
  C)
   phloem                              
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer363) Promeristem gives rise to which meristem?
  A)
   Secondary                         
  done clear
  B)
   Lateral
  done clear
  C)
   Primary                              
  done clear
  D)
   Apical
  done clear
  View Answer play_arrow

• question_answer364) Whose living cells provide tensile and mechanical strength?
  A)
   Collenchyma   
  done clear
  B)
   Sclerenchyma
  done clear
  C)
   Phloem                              
  done clear
  D)
   Sclereids
  done clear
  View Answer play_arrow

• question_answer365) Which one is not related with plant ash?
  A)
   Trace elements               
  done clear
  B)
   Essential elements
  done clear
  C)
   Nitrogen                            
  done clear
  D)
   Mineral elements
  done clear
  View Answer play_arrow

• question_answer366) 0.1 M solution of a solute has a water potential of
  A)
   - 2.3 bars                            
  done clear
  B)
   zero bar
  done clear
  C)
   22.4 bars                            
  done clear
  D)
   + 2.3 bars
  done clear
  View Answer play_arrow

• question_answer367) A small mesophytic twig with green leaves is dipped into water in a big beaker under sunlight. It demonstrates
  A)
   photosynthesis               
  done clear
  B)
   respiration
  done clear
  C)
   transpiration   
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer368) Which one is not related to transpiration   
  A)
   Regulation of plant body temperature  
  done clear
  B)
   Absorption and distribution of mineral salts                                  
  done clear
  C)
   Circulation of water                    
  done clear
  D)
   Bleeding                             
  done clear
  View Answer play_arrow

• question_answer369) Which element is essential for photolysis of water?                                  
  A)
   Nitrogen                            
  done clear
  B)
   Chlorine         
  done clear
  C)
   Carbon                               
  done clear
  D)
   Oxygen         
  done clear
  View Answer play_arrow

• question_answer370) In \[{{C}_{4}}\] plants, initial \[C{{O}_{2}}\] fixation takes place in the chloroplasts of
  A)
   guard cells                         
  done clear
  B)
   spongy mesophyll
  done clear
  C)
   palisade tissue                
  done clear
  D)
   bundle sheath    
  done clear
  View Answer play_arrow

• question_answer371) Which of the following is formed during respiration?
  A)
   \[{{O}_{2}}\] (oxygen)                
  done clear
  B)
   \[C{{O}_{2}}\] (carbon dioxide)
  done clear
  C)
   \[N{{O}_{2}}\] (nitrogen dioxide) 
  done clear
  D)
   \[S{{O}_{2}}\] (sulphur dioxide)
  done clear
  View Answer play_arrow

• question_answer372) The pyruvic acid formed in glycolysis  is  oxidized to \[C{{O}_{2}}\] and \[{{H}_{2}}O\] in a cycle called
  A)
   Calvin cycle                       
  done clear
  B)
   Hill reaction
  done clear
  C)
   Krebs cycle                       
  done clear
  D)
   Nitrogen cycle
  done clear
  View Answer play_arrow

• question_answer373) Nitrogenase enzyme is found in Nostoc in the cell of
  A)
   vegetative                        
  done clear
  B)
   heterocyst        
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer374) Many of the hydrolytic reactions are
  A)
   reversible                          
  done clear
  B)
   irreversible
  done clear
  C)
   endothermic   
  done clear
  D)
   exothermic
  done clear
  View Answer play_arrow

• question_answer375) Most of the plants are seasonal due to
  A)
   photoperiodism             
  done clear
  B)
   phototropism
  done clear
  C)
   photosynthesis               
  done clear
  D)
   photolysis
  done clear
  View Answer play_arrow

• question_answer376) Certain chemical sbstances having profound  effect on growth are called
  A)
   catalytic agents               
  done clear
  B)
   phytohormones
  done clear
  C)
   enzymes                            
  done clear
  D)
   compost
  done clear
  View Answer play_arrow

• question_answer377) The pyramid of energy in a forest ecosystem is
  A)
   always upright
  done clear
  B)
   always inverted
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer378) The importance of ecosystem lies in
  A)
   flow of energy
  done clear
  B)
   cycling of materials
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer379) Which one of the following is a renewable source of energy?
  A)
   Petroleum                        
  done clear
  B)
   Coal
  done clear
  C)
   Nuclear fuel                     
  done clear
  D)
   Trees
  done clear
  View Answer play_arrow

• question_answer380) The correct path of energy flow in an ecosystem is
  A)
   Producers \[\to \]Carnivores\[\to \] Herbivores \[\to \] Decomposers
  done clear
  B)
   Producers\[\to \]Herbivores \[\to \]Carnivores\[\to \]Decomposers
  done clear
  C)
   Herbivores \[\to \]Carnivores\[\to \] Producers \[\to \] Decomposers
  done clear
  D)
   Herbivores \[\to \] Producers \[\to \] Carnivores\[\to \] Decomposers
  done clear
  View Answer play_arrow

• question_answer381) The number of primary producers within a specified area would be maximum in
  A)
   grassland ecosystem    
  done clear
  B)
   forest ecosystem
  done clear
  C)
   pond ecosystem            
  done clear
  D)
   deserts
  done clear
  View Answer play_arrow

• question_answer382) A food chain starts with
  A)
   nitrogen fixationing organisms
  done clear
  B)
   photosynthesizing organisms
  done clear
  C)
   respiration
  done clear
  D)
   decomposers
  done clear
  View Answer play_arrow

• question_answer383) Nepenthes is a
  A)
   primary producer           
  done clear
  B)
   consumer
  done clear
  C)
   Both [a] and [b]              
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer384) Spraying of DDT on crops produces pollution of
  A)
  air only                
  done clear
  B)
   air and soil only
  done clear
  C)
   air and water only          
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer385) Which of the following is most important source of food?
  A)
   Lichen                                 
  done clear
  B)
   Angiosperms
  done clear
  C)
   Algae                                   
  done clear
  D)
   Fungi
  done clear
  View Answer play_arrow

• question_answer386) Which of the following is a pseudocereal
  A)
   Triticum aestivum
  done clear
  B)
   Oryza sativa
  done clear
  C)
   Zea mays
  done clear
  D)
   Fagopyrum esculentum
  done clear
  View Answer play_arrow

• question_answer387) Which of the following is rich source of protein?
  A)
   Rice           
  done clear
  B)
   Wheat
  done clear
  C)
   Groundnut     
  done clear
  D)
   Pearl millet
  done clear
  View Answer play_arrow

• question_answer388) Which of the following is surface fibre?
  A)
   Coir                                      
  done clear
  B)
   Cotton
  done clear
  C)
   Sunnhemp                        
  done clear
  D)
   Manilahemp
  done clear
  View Answer play_arrow

• question_answer389) Which of the following  is not a plant fibre?
  A)
   Cotton                                
  done clear
  B)
   Coir
  done clear
  C)
   Sunnhemp                        
  done clear
  D)
   Silk
  done clear
  View Answer play_arrow

• question_answer390) Triticum aestivum is
  A)
   haploid                               
  done clear
  B)
   diploid
  done clear
  C)
   tetraploid                          
  done clear
  D)
   hexaploid
  done clear
  View Answer play_arrow

• question_answer391) Which of the following is an oilseed crop ?
  A)
   Careopsis                          
  done clear
  B)
   Paddy
  done clear
  C)
   Sunflower                         
  done clear
  D)
   Chrysanthemum
  done clear
  View Answer play_arrow

• question_answer392) Richest source of carbohydrate is
  A)
   Sorghum  
  done clear
  B)
   groundnut
  done clear
  C)
   gram                                    
  done clear
  D)
   wheat
  done clear
  View Answer play_arrow

• question_answer393) Plants which yield pulses belong to family
  A)
   Papilionaceae                  
  done clear
  B)
   Rosaceae
  done clear
  C)
   Malvaceae                        
  done clear
  D)
   Compositae
  done clear
  View Answer play_arrow

• question_answer394) Which state of India is the largest producer of jute?
  A)
   West Bengal                     
  done clear
  B)
   Uttar Pradesh
  done clear
  C)
   Bihar                                    
  done clear
  D)
   Madhya Pradesh
  done clear
  View Answer play_arrow

• question_answer395) From which part of plant, cotton fibres are obtained?
  A)
   Root hairs                          
  done clear
  B)
   Stem hairs
  done clear
  C)
   Leaf                                     
  done clear
  D)
   Seed hairs
  done clear
  View Answer play_arrow

• question_answer396) In which part of plant, groundnut oil is stored?
  A)
   Leaf                                     
  done clear
  B)
   Tuber
  done clear
  C)
   Cotyledon                         
  done clear
  D)
   Root
  done clear
  View Answer play_arrow

• question_answer397) Food can be easily preserved at low temperature because at low temperature
  A)
   the food can easily be digested
  done clear
  B)
   the food can easily be cooked
  done clear
  C)
   the bacterial attack on food is minimized
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer398) Selection is the method of
  A)
   Plant physiology             
  done clear
  B)
   Plant breeding
  done clear
  C)
   Genetics                            
  done clear
  D)
   Cytology
  done clear
  View Answer play_arrow

• question_answer399) Removal of anthers from flowers buds is called
  A)
   bagging                              
  done clear
  B)
   hybridization
  done clear
  C)
   emasculation                   
  done clear
  D)
   heterosis
  done clear
  View Answer play_arrow

• question_answer400) What are the main objectives of plant breeding?
  A)
   More yield                        
  done clear
  B)
   Better quality
  done clear
  C)
   Stress resistance            
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow