Solved papers for CMC Medical CMC-Medical Ludhiana Solved Paper-2008

done CMC-Medical Ludhiana Solved Paper-2008 Total Questions - 150

• question_answer1) The position of the particle moving along Y-axis is given as \[y=A{{t}^{2}}-B{{t}^{3}},\] where y is measured in metre and t in second. Then the dimensions of B is
  A)
   \[[L{{T}^{-2}}]\]              
  done clear
  B)
   \[[L{{T}^{-1}}]\]
  done clear
  C)
   \[[L{{T}^{-3}}]\]              
  done clear
  D)
   \[[ML{{T}^{-2}}]\]
  done clear
  View Answer play_arrow

• question_answer2) A conveyor belt is moving horizontally at a speed of 4 m/s. A box of mass 20 kg is gently laid on it. It takes 0.1s for the box to come to rest. If the belt continues to move uniformly, then the distance moved by the box on the conveyor belt is
  A)
   zero                                     
  done clear
  B)
   0.2 m
  done clear
  C)
   0.4 m                                   
  done clear
  D)
   0.8 m
  done clear
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• question_answer3) An open knife edge of mass m is dropped from a height h on a wooden floor. If the blade penetrates s into the wood the average resistance offered by the wood to the blade is
  A)
   \[Mg\]                                
  done clear
  B)
   \[Mg\left( \frac{h}{s} \right)\]
  done clear
  C)
   \[Mg\left( 1-\frac{h}{s} \right)\]                             
  done clear
  D)
   \[Mg{{\left( 1+\frac{h}{s} \right)}^{2}}\]
  done clear
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• question_answer4) Energy required to accelerate a car from 10 m/s to 20 m/s compared with that required to accelerate it from 0 to 10 m/s is
  A)
   twice                                   
  done clear
  B)
   thrice
  done clear
  C)
   four times         
  done clear
  D)
   same
  done clear
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• question_answer5) A solid sphere of mass 2 kg rolls up a \[30{}^\circ \] incline with an initial speed of 10 m/s. The maximum height reached by the sphere is \[(g=10\,m\text{/}{{s}^{2}})\]
  A)
   3.5 m                                   
  done clear
  B)
   7.0 m
  done clear
  C)
   10.5 m                                 
  done clear
  D)
   14.0 m
  done clear
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• question_answer6) Two satellites are moving in the same circular orbit around the earth. They must have the same
  A)
   mass
  done clear
  B)
   angular momentum
  done clear
  C)
   kinetic energy
  done clear
  D)
   speed
  done clear
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• question_answer7) A planet having average surface temperature \[{{T}_{0}}\]at an average distance d from the sun. Assuming that the planet receives radiant energy from the sun only and it loses radiant energy only from the surface and neglecting all other atmospheric effects we conclude
  A)
   \[{{T}_{0}}\propto {{d}^{2}}\]                   
  done clear
  B)
   \[{{T}_{0}}\propto {{d}^{-2}}\]
  done clear
  C)
   \[{{T}_{0}}\propto {{d}^{1/2}}\]                              
  done clear
  D)
   \[{{T}_{0}}\propto {{d}^{-1/2}}\]
  done clear
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• question_answer8) Time period of a simple pendulum is T. If its length increases by 2%, the new time period becomes
  A)
   0.98 T                                  
  done clear
  B)
   1.02 T
  done clear
  C)
   0.99 T                                  
  done clear
  D)
   1.01 T
  done clear
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• question_answer9) A boat of anchor is rocket by waves of velocity 25 m/s having crests 100 m apart. They reach the boat once every
  A)
   4.0 s                                     
  done clear
  B)
   8.0 s
  done clear
  C)
   2.0 s                                     
  done clear
  D)
   0.25 s
  done clear
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• question_answer10) Two point charges +2C and +6C repel each other with a force of 12 N. If a charge of -2C is given to each of these charges the force will now be
  A)
   zero                                     
  done clear
  B)
   8 N (attractive)
  done clear
  C)
   8 N (repulsive)                
  done clear
  D)
   None of these
  done clear
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• question_answer11) The equivalent resistance between A and B (of the circuit shown) is
  A)
   4.5\[\Omega \]                               
  done clear
  B)
   12\[\Omega \]
  done clear
  C)
   5.4\[\Omega \]               
  done clear
  D)
   20\[\Omega \]
  done clear
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• question_answer12) A 2 kW boiler used for 1 h/day consumes the following electrical energy in thirty days
  A)
   60 unit                
  done clear
  B)
   120 unit
  done clear
  C)
   15 unit                
  done clear
  D)
   \[6\times {{10}^{4}}\]unit
  done clear
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• question_answer13) Two long straight wires are set parallel to each other at separation r and each carries a current I in the same direction. The strength of the magnetic field at any point midway between the two wires is
  A)
   \[\frac{{{\mu }_{0}}I}{\pi r}\]                                    
  done clear
  B)
   \[\frac{2{{\mu }_{0}}I}{\pi r}\]
  done clear
  C)
   \[\frac{{{\mu }_{0}}I}{2\pi r}\]                  
  done clear
  D)
   zero
  done clear
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• question_answer14) A inductive coil has a resistance of 100\[\Omega \]. When an AC signal of frequency 1000 Hz is applied to the coil, the voltage leads the current by\[45{}^\circ \]. The inductance of the coil is
  A)
   \[\frac{1}{10\pi }\]                         
  done clear
  B)
   \[\frac{1}{20\pi }\]
  done clear
  C)
   \[\frac{1}{40\pi }\]                         
  done clear
  D)
   \[\frac{1}{60\pi }\]
  done clear
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• question_answer15) A boy stands straight in front of a mirror at a distance of 30 cm from it. He sees his erect image whose height is\[\frac{1}{5}\]of his real height. The mirror he is using, is
  A)
   plane                   
  done clear
  B)
   convex
  done clear
  C)
   concave                             
  done clear
  D)
   plano-concave
  done clear
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• question_answer16) In the depletion region of an unbiased p-n junction diode, there are
  A)
   only electrons
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  B)
   only holes
  done clear
  C)
   both electrons and holes
  done clear
  D)
   only fixed ions
  done clear
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• question_answer17) The condition under which vectors \[(\overrightarrow{a}+\overrightarrow{b})\] and \[(\overrightarrow{a}-\overrightarrow{b})\] should be at right angles to each other is
  A)
   \[\overrightarrow{a}\ne \overrightarrow{b}\]                 
  done clear
  B)
   \[\overrightarrow{a}\cdot \overrightarrow{b}=0\]
  done clear
  C)
   \[|\overrightarrow{a}|\,\,=\,\,|\overrightarrow{b}|\]                
  done clear
  D)
   \[\overrightarrow{a}\cdot \overrightarrow{b}=1\]
  done clear
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• question_answer18) The error in the measurement of radius of the sphere is 0.3%. What is the permissible error in its surface area?
  A)
   0.6%                                    
  done clear
  B)
   1.2%
  done clear
  C)
   1.8%                                    
  done clear
  D)
   2.4%
  done clear
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• question_answer19) A gas is heated at constant pressure. The fraction of heat supplied used for external work is
  A)
   \[\frac{1}{\gamma }\]                                  
  done clear
  B)
   \[\left( 1-\frac{1}{\gamma } \right)\]
  done clear
  C)
   \[\gamma -1\]                 
  done clear
  D)
   \[\left( 1-\frac{1}{{{\gamma }^{2}}} \right)\]
  done clear
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• question_answer20) The maximum displacement of the particle executing SHM is 1 cm and the maximum acceleration is\[{{(1.57)}^{2}}cm\text{/}{{s}^{2}}.\]Its time period is
  A)
   0.25 s                                   
  done clear
  B)
   4.0 s
  done clear
  C)
   1.57 s                                   
  done clear
  D)
   3.14 s
  done clear
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• question_answer21) The equation of a wave travelling on a string is \[y=4\,\sin \left[ \frac{\pi }{2}\left( 8t-\frac{x}{8} \right) \right],\] where x, y are in cm and t in second. The velocity of the wave is
  A)
   64 cm/s, in - x direction
  done clear
  B)
   32 cm/s, in - x direction
  done clear
  C)
   32 cm/s, in + x direction
  done clear
  D)
   64 cm/s, in + x direction
  done clear
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• question_answer22) In the figure, the equivalent capacitance between A and B is
  A)
   3.75\[\mu F\]                  
  done clear
  B)
   5.25\[\mu F\]
  done clear
  C)
   6.5\[\mu F\]                     
  done clear
  D)
   10.5\[\mu F\]
  done clear
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• question_answer23) Two bulbs 100 W, 250 V and 200 W, 250 V are connected in parallel across a 500 V line. Then
  A)
   100 W bulb will be fused
  done clear
  B)
   200 W bulb will be fused
  done clear
  C)
   both bulbs will be fused
  done clear
  D)
   no bulb will be fused
  done clear
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• question_answer24) A long solenoid has 20 turns/cm. The current necessary to produce a magnetic field of 20 mT inside the solenoid is approximately
  A)
   1 A                                        
  done clear
  B)
   2 A
  done clear
  C)
   4 A                                        
  done clear
  D)
   8 A
  done clear
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• question_answer25) The inductance of a coil is proportional to
  A)
   its length
  done clear
  B)
   the number of turns
  done clear
  C)
   the resistance of the coil
  done clear
  D)
   the square of the number of turns
  done clear
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• question_answer26) A photosensitive surface is receiving light of wavelength 5000\[\overset{\text{o}}{\mathop{\text{A}}}\,\] at the rate of\[{{10}^{-7}}\,J\text{/}s.\]. The number of photons ejected per second is
  A)
   \[2.5\times {{10}^{12}}\]                            
  done clear
  B)
   \[2.5\times {{10}^{11}}\]
  done clear
  C)
   \[2.5\times {{10}^{10}}\]                            
  done clear
  D)
   \[2.5\times {{10}^{9}}\]
  done clear
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• question_answer27) Two discs have same mass and same thickness. Their materials are of densities \[{{\rho }_{1}}\] and\[{{\rho }_{2}}\]. The ratio of their moments of inertia about central axis will be
  A)
   \[{{\rho }_{1}}{{\rho }_{2}}:1\]                 
  done clear
  B)
   \[1:{{\rho }_{1}}{{\rho }_{2}}\]
  done clear
  C)
   \[{{\rho }_{1}}:{{\rho }_{2}}\]                   
  done clear
  D)
   \[{{\rho }_{2}}:{{\rho }_{1}}\]
  done clear
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• question_answer28) The Youngs modulus of the material of the wire of length \[L\] and radius r is\[Y\,N\text{/}{{m}^{2}}\]. If the length is reduced to \[L\text{/}2\] and radius r/2, the Youngs modulus will be
  A)
   Y/2                                       
  done clear
  B)
   Y
  done clear
  C)
   2Y                                         
  done clear
  D)
   4Y
  done clear
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• question_answer29) A body floats with one-third of its volume outside water and 3/4 of its volume outside another liquid. The density of the other liquid is
  A)
   \[\frac{9}{4}g\text{/}cc\]                            
  done clear
  B)
   \[\frac{4}{0}g\text{/}cc\]
  done clear
  C)
   \[\frac{8}{3}g\text{/}cc\]                            
  done clear
  D)
   \[\frac{3}{8}g\text{/}cc\]
  done clear
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• question_answer30) The terminal velocity of small-sized spherical body of radius r falling vertically in a viscous liquid is given by the following proportionality
  A)
   \[1\text{/}{{r}^{2}}\]                                    
  done clear
  B)
   \[1\text{/}r\]
  done clear
  C)
   \[r\]                                     
  done clear
  D)
   \[{{r}^{2}}\]
  done clear
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• question_answer31) The reading of a manometer fitted to a closed tap is \[3.5\times {{10}^{5}}N\text{/}{{m}^{2}}.\] If the valve is opened, the reading of the manometer falls to \[3.5\times {{10}^{5}}N\text{/}{{m}^{2}}.\] The velocity of water is
  A)
   1 m/s                                   
  done clear
  B)
   10 m/s
  done clear
  C)
   100 m/s              
  done clear
  D)
   0.1 m/s
  done clear
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• question_answer32) One litre of an ideal gas at \[27{}^\circ C\] is heated at a constant pressure to\[297{}^\circ C\]. Then, the final volume is approximately
  A)
   1.2 L                                     
  done clear
  B)
   1.9 L
  done clear
  C)
   19 L                                      
  done clear
  D)
   2.4 L
  done clear
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• question_answer33) Coefficient of cubical expansion of water is zero at
  A)
   \[0{}^\circ C\]                  
  done clear
  B)
   \[4{}^\circ C\]
  done clear
  C)
   \[15.5{}^\circ C\]           
  done clear
  D)
   \[100{}^\circ C\]
  done clear
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• question_answer34) A cylindrical conductor is placed near another. positively charged conductor; The net charge acquired by the cylindrical conductor will be
  A)
   positive only
  done clear
  B)
   negative only
  done clear
  C)
   zero
  done clear
  D)
   either positive or negative
  done clear
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• question_answer35) The ratio of areas between the electron orbits for the first excited state to the ground state for the hydrogen atom is
  A)
   2 : 1                                      
  done clear
  B)
   4 : 1
  done clear
  C)
   8 : 1                                      
  done clear
  D)
   16 : 1
  done clear
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• question_answer36) An electron, accelerated by a potential difference V, has de-Broglie wavelength\[\lambda .\] If the electron is accelerated by a potential difference 4V, its de-Broglie wavelength will be
  A)
   \[2\lambda \]                                  
  done clear
  B)
   \[4\lambda \]
  done clear
  C)
   \[\lambda \text{/}2\]                                   
  done clear
  D)
   \[\lambda \text{/}4\]
  done clear
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• question_answer37) A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of the combination in dioptre is
  A)
   - 1.5                                     
  done clear
  B)
   - 6.5
  done clear
  C)
   + 6.5                                    
  done clear
  D)
   + 6.67
  done clear
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• question_answer38) A material particle with a rest mass \[{{m}_{0}}\] is moving with speed of light c. The de-Broglie wavelength associated is given by
  A)
   \[\frac{h}{{{m}_{0}}c}\]                               
  done clear
  B)
   \[\frac{{{m}_{0}}c}{h}\]
  done clear
  C)
   zero                                     
  done clear
  D)
   infinite
  done clear
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• question_answer39) The impedance of a circuit consists of \[3\Omega \] resistance and \[4\Omega \] resistance. The power factor of the circuit is
  A)
   0.4                                        
  done clear
  B)
   0.6
  done clear
  C)
   0.8                                        
  done clear
  D)
   1.0
  done clear
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• question_answer40) A glass has refractive index \[\frac{3}{2}\] and water has refractive index\[\frac{4}{3}\]. If the speed of light in glass is \[2\times {{10}^{8}}m\text{/}s,\] the speed of light in water in m/s is
  A)
   \[1.5\times {{10}^{6}}\]                               
  done clear
  B)
   \[1.78\times {{10}^{8}}\]
  done clear
  C)
   \[2.25\times {{10}^{8}}\]                            
  done clear
  D)
   \[2.67\times {{10}^{8}}\]
  done clear
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• question_answer41) A bulb is placed between two plane mirrors inclined at an angle of \[60{}^\circ \]. The number of images formed is
  A)
   5                                            
  done clear
  B)
   6
  done clear
  C)
   4                                            
  done clear
  D)
   3
  done clear
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• question_answer42) A piece of semiconductor is connected in series in an electric circuit. On increasing the temperature, the current in the circuit will
  A)
   decrease           
  done clear
  B)
   remain unchanged
  done clear
  C)
   increase             
  done clear
  D)
   stop flowing
  done clear
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• question_answer43) If the wavelength of the first line of the Balmer series of hydrogen is 6561\[\overset{\text{o}}{\mathop{\text{A}}}\,\], the wavelength of the second line of the series should be
  A)
   13122 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]                        
  done clear
  B)
   3280 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  C)
   4860 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]                          
  done clear
  D)
   2187 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
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• question_answer44) Activity of a radioactive element decreased to one third of original activity \[{{R}_{0}}\] in 9 yr. After further 9 yr, its activity will be
  A)
   \[{{R}_{0}}\]                                     
  done clear
  B)
   \[\frac{2}{3}{{R}_{0}}\]
  done clear
  C)
   \[\frac{{{R}_{0}}}{9}\]                                  
  done clear
  D)
   \[\frac{{{R}_{0}}}{6}\]
  done clear
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• question_answer45) In a potentiometer experiment, the galvano-meter shows no deflection when a cell is connected across 60 cm of the potentiometer wire. If the cell is shunted by a resistance of 6\[\Omega \], the balance is obtained across 50 cm of the wire. The internal resistance of the cell is
  A)
   0.50                                      
  done clear
  B)
   0.60
  done clear
  C)
   1.20                                      
  done clear
  D)
   1.50
  done clear
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• question_answer46) A nuclear reaction given by \[{}_{Z}{{X}^{A}}\xrightarrow{{}}{}_{Z+1}{{Y}^{A}}+{}_{-1}{{e}^{0}}+\bar{v}\]represents.
  A)
   \[\gamma \]-decay                       
  done clear
  B)
   fusion
  done clear
  C)
   fission                 
  done clear
  D)
   \[\beta \]-decay
  done clear
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• question_answer47) Two batteries of emf 4 V and 8 V with internal resistance 1\[\Omega \] and 2\[\Omega \] are connected in a circuit with a resistance of 9\[\Omega \] as shown in figure. The current and potential difference between the points P and Q are
  A)
   \[\frac{1}{3}A\]and 3 V                
  done clear
  B)
   \[\frac{1}{6}A\] and 4V
  done clear
  C)
   \[\frac{1}{9}A\]and 9 V                
  done clear
  D)
   \[\frac{1}{2}A\]and 12 V
  done clear
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• question_answer48) Light of wavelength 4000\[\overset{\text{o}}{\mathop{\text{A}}}\,\] is incident on a sodium surface for which the threshold wavelength of photoelectron is 5420\[\overset{\text{o}}{\mathop{\text{A}}}\,\]. The work function of sodium is
  A)
   4.58 eV               
  done clear
  B)
   2.28 eV
  done clear
  C)
   1.14eV                                
  done clear
  D)
   0.57 eV
  done clear
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• question_answer49) In a Youngs double slit experiment, the slit separation is 1 mm and the screen in 1 m from the slit. For a monochromatic light of wavelength 500 nm, the distance of 3rd minima from central maxima is
  A)
   0.50 mm             
  done clear
  B)
   1.25 mm
  done clear
  C)
   1.50mm              
  done clear
  D)
   1.75mm
  done clear
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• question_answer50) In order to double the frequency of the fundamental note emitted by a stretched string, the length is reduced to \[\frac{3}{4}\]th of the original length and the tension is changed. The factor by which the tension is to be changed, is
  A)
   \[\frac{3}{8}\]                                  
  done clear
  B)
   \[\frac{2}{3}\]
  done clear
  C)
   \[\frac{8}{9}\]                                  
  done clear
  D)
   \[\frac{9}{4}\]
  done clear
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• question_answer51) In a given atom no two electrons can have the same values for all the four quantum numbers. This is called
  A)
  Hunds rule
  done clear
  B)
  Aufbaus principle
  done clear
  C)
  Uncertainty principle
  done clear
  D)
  Paulis exclusion principle
  done clear
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• question_answer52) For reaction, \[2NOCl(g)\rightleftharpoons 2NO(g)+C{{l}_{2}}(g),\]\[{{K}_{c}}\]at \[427{}^\circ C\] is \[3\times {{10}^{-6}}L\,\,\text{mo}{{\text{l}}^{-1}}\]. The value of \[{{K}_{p}}\]is nearly
  A)
   \[7.5\times {{10}^{-5}}\]                             
  done clear
  B)
   \[2.5\times {{10}^{-5}}\]
  done clear
  C)
   \[2.5\times {{10}^{-4}}\]                             
  done clear
  D)
   \[1.72\times {{10}^{-4}}\]
  done clear
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• question_answer53) What is the order of a reaction which has a rate expression, rate\[=k{{(A)}^{3/2}}{{(B)}^{-1}}?\]
  A)
   3/2                                       
  done clear
  B)
   ½
  done clear
  C)
   0                                            
  done clear
  D)
   None of these
  done clear
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• question_answer54) Which of th following compounds is highest covalent?
  A)
   \[LiCl\]                
  done clear
  B)
   \[LiF\]
  done clear
  C)
   \[LiBr\]               
  done clear
  D)
   \[LiI\]
  done clear
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• question_answer55) Shape of\[Xe{{F}_{4}}\]molecule is
  A)
   linear                   
  done clear
  B)
   pyramidal
  done clear
  C)
   tetrahedral                       
  done clear
  D)
   square planar
  done clear
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• question_answer56) Which one of the following elements has the highest ionisation energy?
  A)
   \[[Ne]\,3{{s}^{2}}3{{p}^{1}}\]                   
  done clear
  B)
   \[[Ne]\,3{{s}^{2}}3{{p}^{2}}\]
  done clear
  C)
   \[[Ne]\,3{{s}^{2}}3{{p}^{3}}\]                   
  done clear
  D)
   \[[Ar]\,3{{d}^{10}},\,4{{s}^{2}}4{{p}^{2}}\]
  done clear
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• question_answer57) Important ore of zinc is
  A)
   calamine            
  done clear
  B)
   cryolite
  done clear
  C)
   cassiterite         
  done clear
  D)
   malachite
  done clear
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• question_answer58) Nesslers 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_answer59) Potassium is kept in
  A)
   alcohol                                
  done clear
  B)
   water
  done clear
  C)
   kerosene           
  done clear
  D)
   liquid ammonia
  done clear
  View Answer play_arrow

• question_answer60) Which of the following oxides of nitrogen is the anhydride of nitrous acid?
  A)
   \[NO\]                                
  done clear
  B)
   \[{{N}_{2}}{{O}_{3}}\]
  done clear
  C)
   \[{{N}_{2}}{{O}_{4}}\]                  
  done clear
  D)
   \[{{N}_{2}}{{O}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer61) Which one of the given below is a pseudohalide?
  A)
   \[C{{N}^{-}}\]                  
  done clear
  B)
   \[ICl\]
  done clear
  C)
   \[I{{F}_{5}}\]                                    
  done clear
  D)
   \[I_{3}^{-}\]
  done clear
  View Answer play_arrow

• question_answer62) Acidified potassium permanganate solution is decolourised by
  A)
   bleaching powder          
  done clear
  B)
   white vitriol
  done clear
  C)
   Mohrs salt         
  done clear
  D)
   microcosmic salt
  done clear
  View Answer play_arrow

• question_answer63) The pressure and temperature of 4\[d{{m}^{3}}\] of carbon dioxide gas are doubled. Then, volume of carbon dioxide gas would be
  A)
   2\[d{{m}^{3}}\]                               
  done clear
  B)
   3\[d{{m}^{3}}\]
  done clear
  C)
   4\[d{{m}^{3}}\]                               
  done clear
  D)
   8\[d{{m}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer64) An fee unit cell of aluminium contains the equivalent of how many atoms?
  A)
   1                                            
  done clear
  B)
   2
  done clear
  C)
   3                                            
  done clear
  D)
   4
  done clear
  View Answer play_arrow

• question_answer65) Hesss law deals with
  A)
   changes in heat of reaction
  done clear
  B)
   rate of reaction
  done clear
  C)
   equilibrium constant
  done clear
  D)
   influence of pressure on volume of gas
  done clear
  View Answer play_arrow

• question_answer66) Hydrolysis of sodium acetate will give
  A)
   acidic solution                  
  done clear
  B)
   basic solution
  done clear
  C)
   neutral solution              
  done clear
  D)
   normal solution
  done clear
  View Answer play_arrow

• question_answer67) Which of the following is not a non- electrolyte?
  A)
   Acetic acid         
  done clear
  B)
   Glucose
  done clear
  C)
   Ethanol               
  done clear
  D)
   Urea
  done clear
  View Answer play_arrow

• question_answer68) The oxidation state of S in\[{{H}_{2}}{{S}_{2}}{{O}_{8}}\] is
  A)
   + 2                                        
  done clear
  B)
   + 4
  done clear
  C)
   + 6                                        
  done clear
  D)
   + 7
  done clear
  View Answer play_arrow

• question_answer69) Which of the following free radicals is most stable?
  A)
   Primary              
  done clear
  B)
   Methyl
  done clear
  C)
   Secondary         
  done clear
  D)
   Tertiary
  done clear
  View Answer play_arrow

• question_answer70) Which of the following has highest knocking property?
  A)
   Aromatic hydrocarbons
  done clear
  B)
   Olefins
  done clear
  C)
   Branched chain paraffins
  done clear
  D)
   Straight chain paraffins
  done clear
  View Answer play_arrow

• question_answer71) Which of the following is the most stable alkene?
  A)
   \[{{R}_{2}}C=C{{R}_{2}}\]                           
  done clear
  B)
   \[RCH=CHR\]
  done clear
  C)
   \[RCH=C{{H}_{2}}\]                       
  done clear
  D)
   \[C{{H}_{2}}=C{{H}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer72) From Williamsons synthesis preparation of which of the following is possible?
  A)
   Only symmetrical ethers
  done clear
  B)
   Only asymmetrical ethers
  done clear
  C)
   Both (a) and (b)
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer73) Dry heating of calcium acetate gives
  A)
   acetaldehyde                  
  done clear
  B)
   ethane
  done clear
  C)
   acetic acid         
  done clear
  D)
   acetone
  done clear
  View Answer play_arrow

• question_answer74) Formaldehyde reacts with ammonia to give urotropine that is
  A)
   \[{{(C{{H}_{2}})}_{6}}{{N}_{4}}\]                             
  done clear
  B)
   \[{{(C{{H}_{2}})}_{4}}{{N}_{3}}\]
  done clear
  C)
   \[{{(C{{H}_{2}})}_{6}}{{N}_{6}}\]                             
  done clear
  D)
   \[{{(C{{H}_{2}})}_{3}}{{N}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer75) Aniline reacts with acetaldehyde to form
  A)
   Schiffs base     
  done clear
  B)
   carbyl amine
  done clear
  C)
   immine               
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer76) The reagent which forms crystalline osazone derivative when reacted with glucose, is
  A)
   Fehling solution              
  done clear
  B)
   phenyl hydrazine
  done clear
  C)
   Benedict solution           
  done clear
  D)
   hydroxyl amine
  done clear
  View Answer play_arrow

• question_answer77) Chloramine-T is a
  A)
   disinfectant                      
  done clear
  B)
   antiseptic
  done clear
  C)
   analgesic            
  done clear
  D)
   antipyretic
  done clear
  View Answer play_arrow

• question_answer78) Maximum entropy will be in which of the following?
  A)
   Ice                                        
  done clear
  B)
   Liquid water
  done clear
  C)
   Snow                                   
  done clear
  D)
   Water vapours
  done clear
  View Answer play_arrow

• question_answer79) Which of the, following acts as an oxidising as well as reducing agent?
  A)
   \[N{{a}_{2}}O\]                               
  done clear
  B)
   \[N{{a}_{2}}{{O}_{2}}\]
  done clear
  C)
   \[NaN{{O}_{3}}\]                           
  done clear
  D)
   \[NaN{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer80) Maximum number of hydrogen bonds in\[{{H}_{2}}O\]. is
  A)
   1                                            
  done clear
  B)
   2
  done clear
  C)
   3                                            
  done clear
  D)
   4
  done clear
  View Answer play_arrow

• question_answer81) Number of isomers possible for\[{{C}_{4}}{{H}_{8}}O\]is
  A)
   3                                            
  done clear
  B)
   4
  done clear
  C)
   5                                            
  done clear
  D)
   6
  done clear
  View Answer play_arrow

• question_answer82) The ability of a given substance to assume two or more crystalline structure is called
  A)
   amorphism      
  done clear
  B)
   isomorphism
  done clear
  C)
   polymorphism                 
  done clear
  D)
   isomerism
  done clear
  View Answer play_arrow

• question_answer83) A cricket ball of 0.5 kg is moving with a velocity of 100 m/s. The wavelength associated with its motion is
  A)
   \[1\text{/}100\,cm\]                    
  done clear
  B)
   \[6.6\times {{10}^{-34}}m\]
  done clear
  C)
   \[1.32\times {{10}^{-35}}m\]    
  done clear
  D)
   \[6.6\times {{10}^{-28}}m\]
  done clear
  View Answer play_arrow

• question_answer84) At \[90{}^\circ C,\]pure water has\[{{H}_{3}}{{O}^{+}}\]ion concentration of \[{{10}^{-6}}mol\text{/}L.\] The\[{{K}_{w}}\]at\[90{}^\circ C\] is
  A)
   \[{{10}^{-6}}\]                                 
  done clear
  B)
   \[{{10}^{-14}}\]
  done clear
  C)
   \[{{10}^{-12}}\]                               
  done clear
  D)
   \[{{10}^{-8}}\]
  done clear
  View Answer play_arrow

• question_answer85) Aspirin is chemically
  A)
   methyl benzoate
  done clear
  B)
   ethyl salicylate
  done clear
  C)
   acetyl salicylic acid
  done clear
  D)
   o-hydroxy benzoic acid
  done clear
  View Answer play_arrow

• question_answer86) Synthetic polymer which resembles natural rubber, is
  A)
   neoprene          
  done clear
  B)
   chloroprene
  done clear
  C)
   glyptal                 
  done clear
  D)
   nylon
  done clear
  View Answer play_arrow

• question_answer87) The reduction of which of the following compounds would yield secondary amine?
  A)
   Alkyl nitrile.
  done clear
  B)
   Carbylamine
  done clear
  C)
   Primary amine
  done clear
  D)
   Secondary nitro compound
  done clear
  View Answer play_arrow

• question_answer88) Which of the following aldehydes is most reactive?
  A)
   \[{{C}_{6}}{{H}_{5}}-CHO\]
  done clear
  B)
   \[C{{H}_{3}}CHO\]
  done clear
  C)
   \[HCHO\]
  done clear
  D)
   All the equally reactive
  done clear
  View Answer play_arrow

• question_answer89) Which of the following is dihydric alcohol?
  A)
   Glycerol             
  done clear
  B)
   Ethylene glycol
  done clear
  C)
   Carechol            
  done clear
  D)
   Resorcinol
  done clear
  View Answer play_arrow

• question_answer90) Ethyl alcohol is heated with cone \[{{H}_{2}}S{{O}_{4}}.\] The product formed is
  A)
   \[C{{H}_{3}}-\overset{O}{\mathop{\overset{\mathbf{||}}{\mathop{C}}\,}}\,-O{{C}_{2}}{{H}_{5}}\]       
  done clear
  B)
   \[{{C}_{2}}{{H}_{6}}\]
  done clear
  C)
   \[{{C}_{2}}{{H}_{4}}\]                   
  done clear
  D)
   \[{{C}_{2}}{{H}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer91) In the first order reaction, the concentration of the reactants is reduced to 25% in one hour. The half-life period of the reaction is
  A)
   2h                                         
  done clear
  B)
   4h
  done clear
  C)
   1/2 h                                    
  done clear
  D)
   1/4 h
  done clear
  View Answer play_arrow

• question_answer92) The movement of solvent molecules through a semipermeable membrane is called
  A)
   electrolysis      
  done clear
  B)
   electrophoresis
  done clear
  C)
   osmosis              
  done clear
  D)
   cataphoresis
  done clear
  View Answer play_arrow

• question_answer93) Which of the following is a primary halide?
  A)
   Isopropyl iodide
  done clear
  B)
   Secondary butyl iodide
  done clear
  C)
   Tertiay butyl bromide
  done clear
  D)
   Neohexyl chloride
  done clear
  View Answer play_arrow

• question_answer94) \[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\xrightarrow{Cr{{O}_{2}}C{{l}_{2}}}Z\]In the given sequence Z is
  A)
   benzaldehyde                 
  done clear
  B)
   tolueic acid
  done clear
  C)
   phenyl acetic acid          
  done clear
  D)
   benzoic acid
  done clear
  View Answer play_arrow

• question_answer95) In the electrolysis of water, one faraday of electrical energy would evolve
  A)
   one mole of oxygen
  done clear
  B)
   one g atom of oxygen
  done clear
  C)
   8 g of oxygen
  done clear
  D)
   22.4 L of oxygen
  done clear
  View Answer play_arrow

• question_answer96) If the half-life of an isotope X is 10 yr, its decay constant is
  A)
   6.932\[y{{r}^{-1}}\]       
  done clear
  B)
   0.6932\[y{{r}^{-1}}\]
  done clear
  C)
   0.06932\[y{{r}^{-1}}\]                   
  done clear
  D)
   0.006932\[y{{r}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer97) On strong heating sodium bicarbonate changes into
  A)
   sodium monoxide         
  done clear
  B)
   sodium hydroxide
  done clear
  C)
   sodium carbonate         
  done clear
  D)
   sodium peroxide
  done clear
  View Answer play_arrow

• question_answer98) Aluminium reacts with caustic soda to form
  A)
   aluminium hydroxide
  done clear
  B)
   aluminium oxide
  done clear
  C)
   sodium meta aluminate
  done clear
  D)
   sodium tetra aluminate
  done clear
  View Answer play_arrow

• question_answer99) Iron is dropped in dil. \[HN{{O}_{3}}\] it gives
  A)
   ferric nitrate
  done clear
  B)
   ferric nitrate and\[N{{O}_{2}}\]
  done clear
  C)
   ferrous nitrate and ammonium nitrate
  done clear
  D)
   ferrous nitrate and nitric oxide
  done clear
  View Answer play_arrow

• question_answer100) The chief impurity present in red bauxite is
  A)
   \[Si{{O}_{2}}\]                 
  done clear
  B)
   \[F{{e}_{2}}{{O}_{3}}\]
  done clear
  C)
   \[{{K}_{2}}S{{O}_{4}}\]                
  done clear
  D)
   \[NaF\]
  done clear
  View Answer play_arrow

• question_answer101) Which one is related to urine concentration in mammals?
  A)
  Tesrosterone hormone
  done clear
  B)
   Antidiuretic hormone
  done clear
  C)
   Oxytocin honnone
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer102) An enzyme that uses viral RNA as template for the synthesis of DNA is
  A)
   RNA polymerase
  done clear
  B)
   reverse transcriptase
  done clear
  C)
   viral nuclease
  done clear
  D)
   RNA replicase
  done clear
  View Answer play_arrow

• question_answer103) The carrier which transfer the electrons in electron transport system
  A)
   phytochrome                  
  done clear
  B)
   cytochrome
  done clear
  C)
   quantasomes                  
  done clear
  D)
   fucoxanthin
  done clear
  View Answer play_arrow

• question_answer104) The source of agar-agar is
  A)
   Chlamydomonas            
  done clear
  B)
   Chlorella.
  done clear
  C)
   Gelidium            
  done clear
  D)
   Spirogyra
  done clear
  View Answer play_arrow

• question_answer105) A term helotism is used for the symbiosis of
  A)
   alagae and fungi
  done clear
  B)
   algae and Cycas
  done clear
  C)
   algae and bacteria
  done clear
  D)
   Pimis and fungi
  done clear
  View Answer play_arrow

• question_answer106) Haploid structure of Funaria is
  A)
   calyptra              
  done clear
  B)
   protonema
  done clear
  C)
   apophysis          
  done clear
  D)
   operculum
  done clear
  View Answer play_arrow

• question_answer107) In the angiosperm ovule, central cell of the embryo sac, prior to the entry of pollen tube, contains
  A)
   single haploid nucleus
  done clear
  B)
   one diploid and one haploid nuclei
  done clear
  C)
   two haploid polar nuclei
  done clear
  D)
   one diploid secondary nucleus
  done clear
  View Answer play_arrow

• question_answer108) Which of the following is not an influence of auxins?
  A)
   Apical dominance
  done clear
  B)
   Parthenocarpy
  done clear
  C)
   Tropic movements
  done clear
  D)
   Bolting
  done clear
  View Answer play_arrow

• question_answer109) Mycorrhiza helps in
  A)
   nutrition up taking
  done clear
  B)
   food manufacturing
  done clear
  C)
   disease resistance
  done clear
  D)
   disease prevention
  done clear
  View Answer play_arrow

• question_answer110) Amphids are cuticular elevations on ventro tips of Ascaris, These are
  A)
   tangoreceptors               
  done clear
  B)
   taetoreceptors
  done clear
  C)
   olfactoreceptors            
  done clear
  D)
   chemoreceptors
  done clear
  View Answer play_arrow

• question_answer111) Meiosis in Dryopteris takes-place during
  A)
   gamete formation         
  done clear
  B)
   spore germination
  done clear
  C)
   zygote formation           
  done clear
  D)
   spore formation
  done clear
  View Answer play_arrow

• question_answer112) Which malaria parasite has longest incubation period?
  A)
   Plasmodium vivax          
  done clear
  B)
   P. falciparum
  done clear
  C)
   P. malariae        
  done clear
  D)
   P. ovale
  done clear
  View Answer play_arrow

• question_answer113) In which group of the following would you place the plants having vascular tissue and lacking seeds?
  A)
   Algae                                   
  done clear
  B)
   Fungi
  done clear
  C)
   Bryophytes                       
  done clear
  D)
   Pteridophytes
  done clear
  View Answer play_arrow

• question_answer114) The poisonous fluid present in nematocyst of Hydra is
  A)
   venom                
  done clear
  B)
   hematin
  done clear
  C)
   toxin                                    
  done clear
  D)
   hypnotoxin
  done clear
  View Answer play_arrow

• question_answer115) XXY chromosome constitution is represented by
  A)
   Downs syndrome
  done clear
  B)
   Turners syndrome
  done clear
  C)
   Klinefelters syndrome
  done clear
  D)
   Okazaki syndrome                
  done clear
  View Answer play_arrow

• question_answer116) The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodule
  A)
   amminase         
  done clear
  B)
   nitrogenase
  done clear
  C)
   nitrate reductase           
  done clear
  D)
   nitrite reductase
  done clear
  View Answer play_arrow

• question_answer117) Centromere is present at one end, the chromosome is
  A)
   metacentric                      
  done clear
  B)
   excentric
  done clear
  C)
   telocentric       
  done clear
  D)
   apocentric
  done clear
  View Answer play_arrow

• question_answer118) Xenia refers to
  A)
   effect of pollen on stem
  done clear
  B)
   effect of pollen on taste of fruit
  done clear
  C)
   effect of pollen on vascular tissue
  done clear
  D)
   effect of pollen on endosperm
  done clear
  View Answer play_arrow

• question_answer119) Elater mechanism of spore dispersal is exhibited by
  A)
   Riccia                   
  done clear
  B)
   Funaria
  done clear
  C)
   Liverworts         
  done clear
  D)
   Marchantia
  done clear
  View Answer play_arrow

• question_answer120) A chemical fertilizing is produced form
  A)
   polar bodies
  done clear
  B)
   middle piece of sperm
  done clear
  C)
   acrosome
  done clear
  D)
   mature eggs
  done clear
  View Answer play_arrow

• question_answer121) The Indian wild ass is in the category of...... by wild life protection act of government of India
  A)
   rare species                      
  done clear
  B)
   endangered species
  done clear
  C)
   endemic species  
  done clear
  D)
   vulnerable species
  done clear
  View Answer play_arrow

• question_answer122) Which of the following commonly called emergency gland of body?
  A)
   Thymus              
  done clear
  B)
   Testis
  done clear
  C)
   Adrenal              
  done clear
  D)
   Pituitary
  done clear
  View Answer play_arrow

• question_answer123) Insectivorous plants grow in ...... deficient soil
  A)
   \[Na\]                                 
  done clear
  B)
   \[N\]
  done clear
  C)
   \[C\]                                    
  done clear
  D)
   \[{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer124) Uterine endometrium, epithelial glands and connective tissue are broken in menstrual phase. That is due to
  A)
   over secretion of FSH
  done clear
  B)
   lack of estrogen
  done clear
  C)
   lack of progesterone
  done clear
  D)
   over production of progesterone
  done clear
  View Answer play_arrow

• question_answer125) The organelles, which take part in photo respiration are
  A)
   chloroplast, mitochondria, nucleus
  done clear
  B)
   chloroplast, mitochondria, lysosome
  done clear
  C)
   mitochondria, chloroplast, peroxisome
  done clear
  D)
   mitochondria, lysosome, peroxisome
  done clear
  View Answer play_arrow

• question_answer126) Which of the following is correctly matched pair of a certain plant family and its one example?
  A)
   Malvaceae-Cotton
  done clear
  B)
   Leguminosae-Mango or sunflower
  done clear
  C)
   Cucurbitaceae-Orange
  done clear
  D)
   Brassicaceae-Wheat
  done clear
  View Answer play_arrow

• question_answer127) Which one of the following is a skull bone?
  A)
   Coracoid            
  done clear
  B)
   Arytaenoid
  done clear
  C)
   Atlas                                    
  done clear
  D)
   Pterygoid
  done clear
  View Answer play_arrow

• question_answer128) A water fern, which is used as a green manure in rice fields is
  A)
   Salvinia               
  done clear
  B)
   Mucor
  done clear
  C)
   Aspergillus                        
  done clear
  D)
   Azolla
  done clear
  View Answer play_arrow

• question_answer129) In which of the following animal, post anal tail is found?
  A)
   Earthworm      
  done clear
  B)
   Lower invertebrate
  done clear
  C)
   Scorpion        
  done clear
  D)
   Snake
  done clear
  View Answer play_arrow

• question_answer130) Apogamy is
  A)
   reproduction of virus
  done clear
  B)
   failure of fusion of gametes
  done clear
  C)
   development of bacteria
  done clear
  D)
   loss of function of reproduction
  done clear
  View Answer play_arrow

• question_answer131) Which bacteria are utilized in gobar gas plane?
  A)
   Methanogens
  done clear
  B)
   Nitrifying bacteria
  done clear
  C)
   Ammonifying bacteria
  done clear
  D)
   Denitrifying bacteria
  done clear
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• question_answer132) In photosynthesis, energy from light reaction to dark reaction is transferred in the form of
  A)
   ADP                                     
  done clear
  B)
   ATP
  done clear
  C)
   RuBP                                   
  done clear
  D)
   chlorophyll
  done clear
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• question_answer133) ELISA is used to detect viruses where the key reagent is
  A)
   DNA probe
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  B)
   RNAse
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  C)
   alkaline phosphatase
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  D)
   catalase
  done clear
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• question_answer134) If Henles loop were absent from mammalian nephron, which of the following is to be expected?
  A)
   The urine will be more concentrated
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  B)
   The urine will be more dilute
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  C)
   There will be no urine formation
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  D)
   There will be hardly any change in the quality and quantity of urine formed
  done clear
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• question_answer135) Which one of the following does not act as a neurotransmitter?
  A)
   Acetylcholine                   
  done clear
  B)
   Epinephrine
  done clear
  C)
   Norepinephrine             
  done clear
  D)
   Cortisone
  done clear
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• question_answer136) In which of the following stage, the chromosome is single, thin and like long thread?
  A)
   Leptotene        
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  B)
   Zygotene
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  C)
   Pachytene       
  done clear
  D)
   Diakinesis
  done clear
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• question_answer137) \[{{C}_{4}}\]-plants differ from \[{{C}_{3}}\]-plants in respect to
  A)
   number of ATP used
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  B)
   substrate which accept the\[C{{O}_{2}}\]molecules
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  C)
   the final product
  done clear
  D)
   Both (a) and (b)
  done clear
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• question_answer138) Gonads of Obelia occur in
  A)
   on blastocyst
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  B)
   in hydrula stage
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  C)
   radial canals of medusa
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  D)
   bases of tentacles of medusa
  done clear
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• question_answer139) The functional xylem of dicot tree is
  A)
   sap wood          
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  B)
   hardwood
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  C)
   heart wood      
  done clear
  D)
   autumn wood
  done clear
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• question_answer140) Botanical name of sanjeevani is
  A)
   Selaginella chrysocaulos
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  B)
   Selaginella bryopteris
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  C)
   Selaginella chrysorhizos
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  D)
   None of the above
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• question_answer141) Elbow joint is
  A)
   ball and socket                
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  B)
   hinge joint
  done clear
  C)
   pivot joint        
  done clear
  D)
   saddle joint
  done clear
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• question_answer142) The point in eye of mammals from which optic nerves and blood vessels leaves the eye ball is
  A)
   yellow spot      
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  B)
   blind spot
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  C)
   pars optica       
  done clear
  D)
   None of these
  done clear
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• question_answer143) Cerebral hemispheres of rat are connected by
  A)
   corpus luteum                 
  done clear
  B)
   corpus callosum
  done clear
  C)
   corpus albicans               
  done clear
  D)
   corpus spongiosum
  done clear
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• question_answer144) The nucleolus is the site of formation of
  A)
   spindle fibres                   
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  B)
   chromosomes
  done clear
  C)
   ribosomes         
  done clear
  D)
   peroxisomes
  done clear
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• question_answer145) Deposition of uric acid crystals within the synovial joint causes
  A)
   osteoarthritis
  done clear
  B)
   rheumatoid arthritis
  done clear
  C)
   gout
  done clear
  D)
   paralysis
  done clear
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• question_answer146) X-chromosomes of female in a sex-linked inheritance case can be passed on to
  A)
   only female progeny
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  B)
   only male progeny
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  C)
   only in grand daughter
  done clear
  D)
   male and female progeny
  done clear
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• question_answer147) Leaf in young condition in fern is called
  A)
   scale leaf           
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  B)
   sporophyll
  done clear
  C)
   circulate ptyxis                
  done clear
  D)
   None of these
  done clear
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• question_answer148) What is common in photosynthesis and respiration?
  A)
   Light energy    
  done clear
  B)
   \[NADP{{H}_{2}}\]
  done clear
  C)
   Cytochromes                   
  done clear
  D)
   \[NAD{{H}_{4}}\]
  done clear
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• question_answer149) Smell of urine is due to the
  A)
   urochrome      
  done clear
  B)
   urinode
  done clear
  C)
   urea                                     
  done clear
  D)
   melanin
  done clear
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• question_answer150) Sertoli cells are involved in
  A)
   excretion           
  done clear
  B)
   nutrition of sperms
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  C)
   respiration       
  done clear
  D)
   All of these
  done clear
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