Solved papers for JCECE Medical JCECE Medical Solved Paper-2010

done JCECE Medical Solved Paper-2010 Total Questions - 150

• question_answer1) At what angle must the two forces \[(x+y)\] and \[(x-y)\]act so that the resultant may be\[\sqrt{({{x}^{2}}+{{y}^{2}})}\]
  A)
  \[{{\cos }^{-1}}\left[ -\frac{{{x}^{2}}+{{y}^{2}}}{2({{x}^{2}}-{{y}^{2}})} \right]\]
  done clear
  B)
   d\[{{\cos }^{-1}}\left[ \frac{-2({{x}^{2}}-{{y}^{2}})}{{{x}^{2}}+{{y}^{2}}} \right]\]
  done clear
  C)
   \[{{\cos }^{-1}}\left[ -\frac{({{x}^{2}}+{{y}^{2}})}{({{x}^{2}}-{{y}^{2}})} \right]\]
  done clear
  D)
   \[{{\cos }^{-1}}\left[ -\frac{({{x}^{2}}-{{y}^{2}})}{({{x}^{2}}+{{y}^{2}})} \right]\]
  done clear
  View Answer play_arrow

• question_answer2) A body starts from rest with uniform acceleration. If its velocity after \[n\] second is \[v,\] then its displacement in the last 2 s is
  A)
  \[\frac{2v(n+1)}{n}\]
  done clear
  B)
   \[\frac{v(n+1)}{n}\]
  done clear
  C)
   \[\frac{v(n-1)}{n}\]
  done clear
  D)
   \[\frac{2v(n-1)}{n}\]
  done clear
  View Answer play_arrow

• question_answer3) A wheel completes 2000 revolutions to cover the 9.5 km distance, then the diameter of the wheel is
  A)
   1.5m            
  done clear
  B)
   1.5cm
  done clear
  C)
   7.5 cm           
  done clear
  D)
   7.5m
  done clear
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• question_answer4) A closed compartment containing gas is moving with some acceleration in horizontal direction. Neglect effect of gravity. Then the pressure in the compartment is
  A)
   same everywhere
  done clear
  B)
   lower in front side
  done clear
  C)
   lower in rear side
  done clear
  D)
   lower in upper side
  done clear
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• question_answer5) A block A weighing 100 kg rests on a block B and is tied with a horizontal string to the wall   at C. Block B weighs 200kg. The coefficient of friction between A and B is 0.25 and between B and the surface is \[\frac{1}{3}.\] The horizontal force P necessary to move the block B should be \[(g=10m/{{s}^{2}})\]
  A)
   1150 N         
  done clear
  B)
   1250 N
  done clear
  C)
   1300 N         
  done clear
  D)
   1420 N
  done clear
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• question_answer6) A boy and a man carry a uniform rod of length  \[L,\]horizontally in such a way that boy gets\[\frac{\text{1}}{\text{4}}\text{th}\] load. If the boy is at one end of the rod, the distance of the man from the other end is
  A)
  \[\frac{L}{3}\]
  done clear
  B)
   \[\frac{L}{4}\]
  done clear
  C)
   \[\frac{2L}{3}\]
  done clear
  D)
   \[\frac{3L}{4}\]
  done clear
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• question_answer7) Two capillary of lengths L and 2L and of radii R and 2R are connected in series. The net rate of flow of fluid through them will be (given rate of the flow through single capillary,\[X=\frac{\pi p{{R}^{4}}}{8\eta L}\])
  A)
   \[\frac{8}{9}X\]
  done clear
  B)
   \[\frac{9}{8}X\]
  done clear
  C)
   \[\frac{5}{7}X\]
  done clear
  D)
   \[\frac{7}{5}X\]
  done clear
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• question_answer8) The molecules of a given mass of a gas have a rms velocity of 200 m/s at \[27{{\,}^{o}}C\]and \[\text{1}\text{.0 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{5}}}\,\text{N/}{{\text{m}}^{\text{2}}}\]pressure.  When  the temperature is\[\text{127}{{\,}^{o}}\text{C}\] and pressure is \[0.5\times {{10}^{5}}N/{{m}^{2}},\] the rms velocity in m/s will   be
  A)
   \[\frac{100\sqrt{2}}{3}\]
  done clear
  B)
   \[100\sqrt{2}\]
  done clear
  C)
   \[\frac{400}{\sqrt{3}}\]
  done clear
  D)
   None of these
  done clear
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• question_answer9) 3 A of current is flowing in a linear conductor having a length of 40 cm. The conductor is placed in a magnetic field of strength 500 gauss  and makes an angle of\[{{30}^{o}}\] with direction of the field. It experiences a force of magnitude
  A)
  \[3\times {{10}^{4}}N\]
  done clear
  B)
   \[3\times {{10}^{2}}N\]
  done clear
  C)
   \[3\times {{10}^{-2}}N\]
  done clear
  D)
   \[3\times {{10}^{-4}}N\]
  done clear
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• question_answer10) A 50 turns circular coil has a radius of 3 cm, it is kept in a magnetic field acting normal to the area of the coil. The magnetic field B increased from 0.10 T to 0.35 T in 2 millisecond. The average induced emf in the coil is
  A)
   1.77 V          
  done clear
  B)
   17.7 V
  done clear
  C)
  177 V           
  done clear
  D)
   0.177 V
  done clear
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• question_answer11) In the circuit shown in figure neglecting sourte resistance,  the voltmeter and ammeter readings will be respectively
  A)
  \[0V,3A\]        
  done clear
  B)
  \[150V,3A\]
  done clear
  C)
   \[150\,V,6A\]
  done clear
  D)
   \[0\,V,8A\]
  done clear
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• question_answer12) Photon and electron are given energy \[({{10}^{-2}}\,J).\]  Wavelengths  associated  with photon and electron are\[{{\lambda }_{ph}}\]and\[{{\lambda }_{el}}\]then, correct statement will be
  A)
  \[{{\lambda }_{ph}}>{{\lambda }_{el}}\]
  done clear
  B)
   \[{{\lambda }_{ph}}<{{\lambda }_{el}}\]
  done clear
  C)
   \[{{\lambda }_{ph}}={{\lambda }_{el}}\]
  done clear
  D)
   \[\frac{{{\lambda }_{el}}}{{{\lambda }_{ph}}}=c\]
  done clear
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• question_answer13) The wavelength of radiation emitted is \[{{\lambda }_{0}}\] when an electron jumps from the third to the second orbit of hydrogen atom. For the electron jump from the fourth to-the second orbit of hydrogen atom, the wavelength of radiation emitted will be
  A)
  \[\frac{16}{25}{{\lambda }_{0}}\]
  done clear
  B)
   \[\frac{20}{27}{{\lambda }_{0}}\]
  done clear
  C)
   \[\frac{27}{20}{{\lambda }_{0}}\]
  done clear
  D)
   \[\frac{25}{16}{{\lambda }_{0}}\]
  done clear
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• question_answer14) Radius of \[{{\,}_{\text{2}}}\text{H}{{\text{e}}^{\text{4}}}\]nucleus is 3 fermi. The radius of \[_{\,\text{82}}\text{P}{{\text{b}}^{\text{206}}}\]nucleus will be
  A)
   5 fermi         
  done clear
  B)
   6 fermi
  done clear
  C)
   11.16 fermi      
  done clear
  D)
   8 fermi
  done clear
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• question_answer15) The contribution in the total current flowing through a semiconductor due to electrons  and holes are\[\frac{3}{4}\]and \[\frac{1}{4}\] respectively. If the  drift velocity of electrons is \[\frac{5}{2}\] times that of holes at this temperature, then the ratio of concentration of electrons and holes is
  A)
   6:5            
  done clear
  B)
   5:6
  done clear
  C)
   3:2            
  done clear
  D)
   2:3
  done clear
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• question_answer16) The attenuation in optical fibre is mainly due to
  A)
   absorption
  done clear
  B)
   scattering
  done clear
  C)
   Neither absorption nor scattering
  done clear
  D)
   Both [a] and [b]                      
  done clear
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• question_answer17) An astronomical telescope has an angular magnification of magnitude 5 for distant objects.  The separation between the objective and the eye-piece is 36 cm and the final image is formed at infinity. The focal length \[{{f}_{o}}\]of the objective and the focal length \[{{f}_{e}}\] of the eye-piece are:
  A)
   \[{{f}_{o}}=45\,cm\]and \[{{f}_{e}}=-9cm\]
  done clear
  B)
   \[{{f}_{o}}=-7.2\,cm\]and \[{{f}_{e}}=5\,cm\]
  done clear
  C)
   \[{{f}_{o}}=50\,cm\]and \[{{f}_{e}}=10\,cm\]
  done clear
  D)
   \[{{f}_{o}}=30\,cm\]and \[{{f}_{e}}=6\,cm\]
  done clear
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• question_answer18) A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of incident beam. At the first maximum of the diffraction pattern, the phase difference between the rays coming from the edges of the slit is
  A)
   0
  done clear
  B)
   \[\frac{\pi }{2}\]
  done clear
  C)
   \[\pi \]
  done clear
  D)
   \[2\pi \]
  done clear
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• question_answer19) When the angle of incidence on a material is \[\text{6}{{\text{0}}^{\text{o}}}\text{,}\] the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in \[\text{m}{{\text{s}}^{-1}}\])
  A)
   \[3\times {{10}^{8}}\]
  done clear
  B)
   \[\left[ \frac{3}{\sqrt{2}} \right]\times {{10}^{8}}\]
  done clear
  C)
   \[\sqrt{3}\times {{10}^{8}}\]
  done clear
  D)
   \[0.5\times {{10}^{8}}\]
  done clear
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• question_answer20) Which of the following shows green house  effect?                            
  A)
   Ultraviolet rays  
  done clear
  B)
   Infrared rays
  done clear
  C)
   X-rays           
  done clear
  D)
   None of these
  done clear
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• question_answer21) In Rutherford scattering experiment, what will be. the correct angle for \[\alpha \] scattering for an impact parameter \[b=0\]
  A)
  \[{{90}^{o}}\]  
  done clear
  B)
   \[{{270}^{o}}\]  
  done clear
  C)
  \[{{0}^{0}}\] 
  done clear
  D)
  \[{{180}^{0}}.\]
  done clear
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• question_answer22) A person sees his virtual image by holding a mirror very close to the face. When he moves the mirror away from his face, the image becomes inverted. What type of mirror he is using?
  A)
   Plane mirror     
  done clear
  B)
   Convex mirror
  done clear
  C)
   Coricave.mirror  
  done clear
  D)
   None of these
  done clear
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• question_answer23) If a charged spherical conductor of radius 10 cm has potential V at a point distant 5 cm , from its centre, then the potential at a point distant 15 cm from the centre will be
  A)
  \[\frac{1}{3}V\]
  done clear
  B)
   \[\frac{2}{3}V\]
  done clear
  C)
   \[\frac{3}{2}V\]
  done clear
  D)
   \[3V\]
  done clear
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• question_answer24) The equation of-state of some gases can be expressed as \[\left( p+\frac{a}{{{V}^{2}}} \right)(V-b)=RT\] where, p is the pressure, V the volume, T the absolute temperature and a and b are constants. The dimensional formula of a is
  A)
   \[[M{{L}^{5}}{{T}^{-2}}]\]
  done clear
  B)
   \[[{{M}^{-1}}{{L}^{5}}{{T}^{-2}}]\]
  done clear
  C)
   \[[M{{L}^{-1}}{{T}^{-2}}]\]
  done clear
  D)
   \[[M{{L}^{-5}}{{T}^{-2}}]\]
  done clear
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• question_answer25) A 16 kg block moving on a frictionless horizontal surface with a velocity of 4 m/s compresses an ideal spring and comes to rest. If the force constant of the spring be 100 N/m, then the spring is compressed by
  A)
   1.6 m          
  done clear
  B)
   4 m
  done clear
  C)
   6.1 m          
  done clear
  D)
   3.2 m
  done clear
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• question_answer26) A mass of\[\text{6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{24}}}\,\text{kg}\] is to be compressed in a sphere in such a way that the escape velocity from the sphere is \[\text{3}\,\,\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{8}}}\,\text{m/s}\text{.}\] what should be the radius of the sphere? \[(G=6.67\times {{10}^{-11}}\,N-{{m}^{2}}/k{{g}^{2}})\]
  A)
   9 km           
  done clear
  B)
   9m
  done clear
  C)
   9 cm            
  done clear
  D)
   9 mm
  done clear
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• question_answer27) wire of length L and radius r fixed at one end  and a force F applied to the other end produces an extension \[l.\]The extension produced in another wire of the same material of length 2L and radius 2r by a force 2F,is
  A)
  \[l\]
  done clear
  B)
  \[2l\]
  done clear
  C)
   \[4l\]
  done clear
  D)
   \[\frac{l}{2}\]
  done clear
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• question_answer28) Two trains are moving towards each other with speeds of 20 m/s and 15 m/s relative to the ground. The first train sounds a whistle of frequency 600 Hz, the frequency of the whistle heard by a passenger in the second train before the train meets is (the speed of sound in air is 340 m/s)
  A)
   600 Hz         
  done clear
  B)
   585 Hz
  done clear
  C)
   645 Hz          
  done clear
  D)
   666 Hz
  done clear
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• question_answer29) Two coherent sources of different intensities send waves which interfere. The ratio of maximum intensity to the minimum intensity is 25. The intensities of the sources are in the ratio
  A)
   25 : 1         
  done clear
  B)
   5 : 1
  done clear
  C)
   9 : 4             
  done clear
  D)
   25 : 16
  done clear
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• question_answer30) A microscope is focussed on a3 mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over a mark. How should the microscope be moved to get the mark again in focus?
  A)
   1 cm upward    
  done clear
  B)
   4.5 cm downward
  done clear
  C)
   1 cm downward
  done clear
  D)
   2 cm upward
  done clear
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• question_answer31)  A thin lens made of glass of refractive index \[\text{ }\!\!\mu\!\!\text{ }\,\,\text{=}\,\text{1}\text{.5}\]has a focal length equals to 12 cm in air. It is now immersed in water \[\left( \mu =\frac{4}{3} \right).\]Its new focal length is
  A)
   48 cm         
  done clear
  B)
   36 cm
  done clear
  C)
   24cm          
  done clear
  D)
   12 cm
  done clear
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• question_answer32) Air is pumped into an automobile tube upto a pressure of 200 kPa in the morning when the air temperature is \[22{{\,}^{o}}C.\] During the day, temperature rises to \[\text{42}{{\,}^{\text{o}}}\text{C}\]and the tube expands by 2%. The pressure of the air in the tube  at  this  temperature,  will  be approximately
  A)
   \[212\,kPa\]
  done clear
  B)
   \[209\,kPa\]
  done clear
  C)
   \[206\,kPa\]
  done clear
  D)
   \[200\,kPa\]
  done clear
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• question_answer33) A   radioactive   material   decays   by simultaneous emission of two particles with half-lives 1620 yr and 810 yr respectively. The time in year after which one-fourth of the material remains, is
  A)
   4860 yr         
  done clear
  B)
   3240 yr
  done clear
  C)
   2340 yr         
  done clear
  D)
   1080 yr
  done clear
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• question_answer34) A stone dropped from a balloon which is at a height \[h,\]reaches the ground after t second. From the same balloon, if two stones are thrown, one upwards and the other downwards, with the same velocity \[u\]and  they reach the ground after \[{{t}_{1}}\]and\[{{t}_{2}}\]second respectively, then
  A)
  \[t={{t}_{1}}-{{t}_{2}}\]
  done clear
  B)
   \[t=\frac{{{t}_{1}}+{{t}_{2}}}{2}\]
  done clear
  C)
   \[t=\sqrt{{{t}_{1}}{{t}_{2}}}\]
  done clear
  D)
   \[t=\sqrt{t_{1}^{2}-t_{2}^{2}}\]
  done clear
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• question_answer35) A shell at rest at the origin explodes into three  fragments of masses 1 kg, 2 kg and m kg. The 2 kg and 1 kg pieces fly off with speeds of 12 m/s along \[x-\]axis and 16 m/s along \[y-\]axis respectively. If the m kg piece flies off with a speed of 40 m/s, the total mass of the shell must be
  A)
   3.7kg           
  done clear
  B)
   4kg
  done clear
  C)
   4.5 kg           
  done clear
  D)
   5kg
  done clear
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• question_answer36) If a sphere is rolling, then the ratio of its rotational kinetic energy to the total kinetic energy is
  A)
   1 :2         
  done clear
  B)
   2:5
  done clear
  C)
   2:7         
  done clear
  D)
   5:7
  done clear
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• question_answer37) A body weighs w newton at the surface of the earth. Its weight at a height equals to half the radius of the earth, will be
  A)
  \[\frac{w}{2}\]
  done clear
  B)
   \[\frac{2w}{3}\]
  done clear
  C)
   \[\frac{4w}{9}\]
  done clear
  D)
   \[\frac{8w}{27}\]
  done clear
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• question_answer38) A part of a long wire carrying a current \[i\] is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is           
  A)
  \[\frac{{{\mu }_{0}}i}{4r}\]
  done clear
  B)
   \[\frac{{{\mu }_{0}}i}{2r}\]
  done clear
  C)
   \[\frac{{{\mu }_{0}}i}{2\pi r}(\pi +1)\]
  done clear
  D)
   \[\frac{{{\mu }_{0}}i}{2\pi r}(\pi -1)\]
  done clear
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• question_answer39) A \[36\,\Omega \]galvanometer is shunted by resistance of \[4\,\Omega .\] The percentage of the total current,   which   passes   through   the galvanometer is
  A)
   8%           
  done clear
  B)
   9%
  done clear
  C)
   10%          
  done clear
  D)
   91%
  done clear
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• question_answer40) A can filled with water is revolved in a vertical circle of radius 4 m and the water does not fall down. The time period for a revolution is about
  A)
   2s             
  done clear
  B)
   4s
  done clear
  C)
   8s              
  done clear
  D)
   10 s
  done clear
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• question_answer41) The centre of mass of three particles of   masses 1 kg, 2 kg and 3 kg is at (3, 3, 3) with reference to a fixed coordinate system. Where should a fourth particle of mass 4 kg be placed, so that the centre of mass of the system of all particles shifts to a point (1, 1, 1)?
  A)
  \[(-1,-1,-1)\]
  done clear
  B)
  \[(-2,-2,-2)\]
  done clear
  C)
   \[(2,\,2,\,2)\]
  done clear
  D)
   \[(1,\,1,\,1)\]
  done clear
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• question_answer42) A pulley fixed to the ceiling carries a string with  blocks of masses \[m\] and\[3m\] attached to its ends. The masses of string and pulley are negligible. When the system is released, the acceleration of centre of mass will be
  A)
   Zero
  done clear
  B)
   \[-\frac{g}{4}\]
  done clear
  C)
   \[\frac{g}{2}\]
  done clear
  D)
   \[-\frac{g}{2}\]
  done clear
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• question_answer43) A ray PQ incident on the refracting face BA is refracted in the prism BAC as shown in the figure and emerges from the other refracting face AC as RS, such that \[AQ=AR.\]If the angle  of prism \[A={{60}^{o}}\]and the refractive index of the material of prism is \[\sqrt{3},\]then the angle of deviation of the ray is
  A)
  \[{{60}^{o}}\]
  done clear
  B)
   \[{{45}^{o}}\]
  done clear
  C)
   \[{{30}^{o}}\]
  done clear
  D)
   None of these
  done clear
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• question_answer44) To get an output 1 from the circuit shown in the figure, the input must be
  A)
   \[A=0,B=1,C=0\]
  done clear
  B)
   \[A=1,B=0,C=0\]
  done clear
  C)
   \[A=1,B=0,C=1\]
  done clear
  D)
   \[A=1,B=1,C=0\]
  done clear
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• question_answer45) Minimum number of 8|nF and 250 V capacitors are used to make a combination of \[\text{16 }\!\!\mu\!\!\text{ F}\]and 1000 V are
  A)
   4              
  done clear
  B)
   32
  done clear
  C)
   8              
  done clear
  D)
   3
  done clear
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• question_answer46) Let eqbe the electric field due to a dipole in its  axial plane distan\[l\] and let \[{{\text{E}}_{q}}\]be the field  in the equatorial plane distant \[l,\]then the relation between \[{{E}_{a}}\]and \[{{E}_{q}}\]will be
  A)
  \[{{E}_{a}}=4{{E}_{q}}\]
  done clear
  B)
   \[{{E}_{q}}=2{{E}_{a}}\]
  done clear
  C)
   \[{{E}_{a}}=2{{E}_{q}}\]
  done clear
  D)
  \[{{E}_{q}}=3{{E}_{a}}\]
  done clear
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• question_answer47)  The current in the given circuit is
  A)
   0.3 A             
  done clear
  B)
   0.4 A
  done clear
  C)
   0.1 A             
  done clear
  D)
   0.2 A
  done clear
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• question_answer48) In the circuit shown below what will be the readings of the voltmeter and ammeter? (Total impedance of circuit\[Z=100\,\Omega \])
  A)
   200 V, 1 A      
  done clear
  B)
   800 V, 2 A
  done clear
  C)
  100 V,2A      
  done clear
  D)
   220 V, 2.2 A
  done clear
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• question_answer49) A ball of mass 10 kg is moving with a velocity of 10 m/s. It strikes another ball of mass 5 kg, which is moving in the same direction with a velocity of 4 m/s. If the collision is elastic, then their velocities after collision will be respectively
  A)
   12 m/s, 6 m/s   
  done clear
  B)
   12 m/s, 25 m/s
  done clear
  C)
   6 m/s, 12 m/s    
  done clear
  D)
   8 m/s, 20 m/s
  done clear
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• question_answer50) A hole is made at the bottom of the tank filled with water (density\[\text{1000}\,\text{kg/}{{\text{m}}^{\text{3}}}\]). If the total pressure at the bottom of the tank is 3 atmosphere (1 atmosphere\[\text{=1}{{\text{0}}^{\text{5}}}\,\text{N/}{{\text{m}}^{\text{2}}}\]), then the velocity of efflux is
  A)
   \[\sqrt{200}\,m/s\]
  done clear
  B)
   \[\sqrt{400}\,m/s\]
  done clear
  C)
  \[\sqrt{500}\,m/s\]
  done clear
  D)
   \[\sqrt{800}\,m/s\]
  done clear
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• question_answer51) The \[\text{As}{{\text{F}}_{\text{5}}}\]molecule is trigonal bipyramidal. The hybrid orbitals used by the As atoms for bonding are
  A)
   \[{{d}_{{{x}^{2}}-{{y}^{2}},}}{{d}_{{{z}^{2}}}},s,{{p}_{x}},{{p}_{y}}\]
  done clear
  B)
   \[{{d}_{xy,}}s,{{p}_{x}},{{p}_{y}},{{p}_{z}}\]
  done clear
  C)
   \[s,{{p}_{x}},{{p}_{y}},{{p}_{x}},{{d}_{{{z}^{2}}}}\]
  done clear
  D)
   \[{{d}_{{{x}^{2}}-{{y}^{2}}}},s,{{p}_{x}},{{p}_{y}}\]
  done clear
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• question_answer52) The low density of ice compared to water is due to
  A)
   induced dipole-induced dipole interacdons
  done clear
  B)
   dipole-induced dipole interactions
  done clear
  C)
   hydrogen bonding interactions
  done clear
  D)
   dipole-dipole interactions
  done clear
  View Answer play_arrow

• question_answer53) Inorganic benzene is     
  A)
  \[{{B}_{3}}{{H}_{3}}{{N}_{3}}\]
  done clear
  B)
   \[B{{H}_{3}}N{{H}_{3}}\]
  done clear
  C)
   \[{{B}_{3}}{{H}_{6}}{{N}_{3}}\]
  done clear
  D)
   \[{{H}_{3}}{{B}_{3}}{{N}_{6}}\]
  done clear
  View Answer play_arrow

• question_answer54) Which of the following compounds will show metamerism?
  A)
   \[C{{H}_{3}}-CO-{{C}_{2}}{{H}_{5}}\]
  done clear
  B)
   \[{{C}_{2}}{{H}_{5}}-S-{{C}_{2}}{{H}_{5}}\]
  done clear
  C)
   \[C{{H}_{3}}-O-C{{H}_{3}}\]
  done clear
  D)
   \[C{{H}_{3}}-O-{{C}_{2}}{{H}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer55) Benzene on treatment with a mixture of cone. \[\text{HN}{{\text{O}}_{\text{3}}}\]and cone. \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]at \[\text{100}{{\,}^{o}}\text{C}\]gives
  A)
   nitrobenzene
  done clear
  B)
   m-dinitrobenzene
  done clear
  C)
   p-dinitrobenzene
  done clear
  D)
   o-dinitrobenzene
  done clear
  View Answer play_arrow

• question_answer56) 0.765 g of an acid gives 0.535 g of \[\text{C}{{\text{O}}_{\text{2}}}\]and 0.138 g of \[\text{C}{{\text{O}}_{\text{2}}}\]Then, the ratio of the percentage of carbon and hydrogen is
  A)
   19:2          
  done clear
  B)
   18:11
  done clear
  C)
   20: 17          
  done clear
  D)
   1:7
  done clear
  View Answer play_arrow

• question_answer57) Ziegler-Natta catalyst is
  A)
   \[{{\text{(P}{{\text{h}}_{3}}\text{0P)}}_{3}}RhCl\]
  done clear
  B)
   \[K[PtC{{l}_{3}}({{C}_{2}}{{H}_{4}})]\]
  done clear
  C)
   \[[A{{l}_{2}}{{({{C}_{2}}{{H}_{6}})}_{6}}+TiC{{l}_{4}}]\]
  done clear
  D)
   \[[Fe{{({{C}_{2}}{{H}_{5}})}_{2}}]\]
  done clear
  View Answer play_arrow

• question_answer58) 1 L oxygen gas at STP will weigh
  A)
   1.43 g          
  done clear
  B)
   2.24 g
  done clear
  C)
   11.2 g         
  done clear
  D)
    22.4 g
  done clear
  View Answer play_arrow

• question_answer59) The IUPAC name of the compound, \[{{C}_{2}}{{H}_{5}}-\underset{C{{H}_{2}}}{\mathop{\underset{||}{\mathop{C}}\,}}\,-C{{H}_{2}}OH\]is
  A)
   2-ethylprop-2-en-1-ol              
  done clear
  B)
   2-hydroxymethylbutan-1-ol
  done clear
  C)
   2-methylenebutan-1-ol
  done clear
  D)
   2-ethyl-3-hydroxyprop-1-ene
  done clear
  View Answer play_arrow

• question_answer60) The chemical name of vitamin \[{{B}_{1}}\]is
  A)
   ascorbic acid    
  done clear
  B)
   riboflavin
  done clear
  C)
   pyridoxine      
  done clear
  D)
   thiamine
  done clear
  View Answer play_arrow

• question_answer61) Glyptal polymer is obtained from glycol by reacting with
  A)
   malonic acid    
  done clear
  B)
   phthalic acid
  done clear
  C)
   maleic acid      
  done clear
  D)
   terephthalic acid
  done clear
  View Answer play_arrow

• question_answer62) Molecular formula of Glaubers salt is
  A)
  \[MgS{{O}_{4}}.7{{H}_{2}}O\]
  done clear
  B)
   \[CuS{{O}_{4}}.5{{H}_{2}}O\]
  done clear
  C)
   \[FeS{{O}_{4}}.7{{H}_{2}}O\]
  done clear
  D)
   \[N{{a}_{2}}S{{O}_{4}}.10{{H}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer63) The size of colloidal particles is in between
  A)
  \[{{10}^{-7}}{{10}^{-9}}cm\]
  done clear
  B)
   \[{{10}^{-9}}{{10}^{-11}}cm\]
  done clear
  C)
   \[{{10}^{-5}}{{10}^{-7}}cm\]
  done clear
  D)
   \[{{10}^{-2}}{{10}^{-3}}cm\]
  done clear
  View Answer play_arrow

• question_answer64) In the reaction, \[S{{O}_{2}}+2{{H}_{2}}S\xrightarrow{{}}\]\[3S+2{{H}_{2}}O\]the substance oxidised is
  A)
  \[{{H}_{2}}S\]
  done clear
  B)
   \[S{{O}_{2}}\]
  done clear
  C)
   \[S\]
  done clear
  D)
   \[{{H}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer65) The emf of the cell, \[Ni|N{{i}^{2+}}(1.0\,M)||A{{u}^{3+}}(1.0M)|Au\]is \[[{{E}^{o}}(N{{i}^{2+}}/Ni)=-0.25Vand\,{{E}^{o}}\]\[[A{{u}^{3+}}/Au)=+1.5V]\]
  A)
   2.00 V          
  done clear
  B)
   1.25 V
  done clear
  C)
   -1.25 V         
  done clear
  D)
   1.75 V
  done clear
  View Answer play_arrow

• question_answer66) The heat of neutralisation is highest for the reaction between-
  A)
  \[N{{H}_{4}}OH-C{{H}_{3}}COOH\]
  done clear
  B)
   \[HN{{O}_{3}}-N{{H}_{4}}OH\]
  done clear
  C)
   \[NaOH-C{{H}_{3}}COOH\]
  done clear
  D)
   \[HCl-NaOH\]
  done clear
  View Answer play_arrow

• question_answer67) An ideal gas expands in volume from \[1\times {{10}^{-3}}{{m}^{3}}\]to \[1\times {{10}^{-2}}{{m}^{3}}\]at 300 K against a constant pressure of \[1\times {{10}^{5}}N{{m}^{-2}}.\]The work done is
  A)
  \[~-900\,J\]        
  done clear
  B)
  \[~-\,900\,kJ\]
  done clear
  C)
   270 kJ         
  done clear
  D)
   900 Kj
  done clear
  View Answer play_arrow

• question_answer68) Which one of the following is correct?
  A)
   \[-\Delta G=\Delta H-T\Delta S\]
  done clear
  B)
   \[\Delta H=\Delta G-T\Delta S\]
  done clear
  C)
   \[\Delta S=\frac{1}{T}[\Delta G-\Delta H]\]
  done clear
  D)
   \[\Delta S=\frac{1}{T}[\Delta H-\Delta G]\]
  done clear
  View Answer play_arrow

• question_answer69) The electronic configuration of element with atomic number 24 is
  A)
  \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{4}},4{{s}^{2}}\]
  done clear
  B)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}}\]
  done clear
  C)
  \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{6}}\]
  done clear
  D)
   \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{5}},4{{s}^{1}}\]
  done clear
  View Answer play_arrow

• question_answer70) In van der Waals equation of state of the gas law, the constant b is a measure of
  A)
    intermolecular repulsions
  done clear
  B)
   intermolecular attraction
  done clear
  C)
   volume occupied by the molecules
  done clear
  D)
   intermolecular collisions per unit volum
  done clear
  View Answer play_arrow

• question_answer71) If the radius of \[{{\text{K}}^{\text{+}}}\]and \[{{F}^{-}}\]are 133 pm and 136 pm respectively, the distance between \[{{\text{K}}^{\text{+}}}\]and \[{{F}^{-}}\]in KF is
  A)
   269pm       
  done clear
  B)
   134.5pm
  done clear
  C)
   136pm        
  done clear
  D)
   3pm
  done clear
  View Answer play_arrow

• question_answer72) The property of attracting electrons by the halogen atoms in a molecule is called
  A)
   ionization potential
  done clear
  B)
   electron affinity
  done clear
  C)
   electronegativity
  done clear
  D)
   electronic attraction
  done clear
  View Answer play_arrow

• question_answer73) A reversible chemical reaction is having two reactants, in equilibrium.    If   the concentration of the reactants are doubled then the equilibrium constant will
  A)
   be doubled
  done clear
  B)
  become one fourth
  done clear
  C)
   be halved
  done clear
  D)
   remain the same
  done clear
  View Answer play_arrow

• question_answer74) The strongest Bronsted base is
  A)
  \[ClO_{3}^{-}\]
  done clear
  B)
   \[ClO_{2}^{-}\]
  done clear
  C)
   \[ClO_{4}^{-}\]
  done clear
  D)
   \[Cl{{O}^{-}}\]
  done clear
  View Answer play_arrow

• question_answer75) A solution contains 10 mL 0.1 N NaOH and \[\text{10}\,\text{mL}\,\text{0}\text{.05}\,\text{N}{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\text{,pH}\]of this solution is
  A)
   less than 7      
  done clear
  B)
   7
  done clear
  C)
   zero            
  done clear
  D)
   greater than 7
  done clear
  View Answer play_arrow

• question_answer76) For which one of the following reactions \[{{K}_{p}}={{K}_{c}}\]?
  A)
  \[PC{{l}_{5}}PC{{l}_{3}}+C{{l}_{2}}\]
  done clear
  B)
   \[{{N}_{2}}+{{O}_{2}}2NO\]
  done clear
  C)
   \[{{N}_{2}}+3{{H}_{2}}2N{{H}_{3}}\]
  done clear
  D)
   \[2S{{O}_{3}}2S{{O}_{2}}+{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer77) What is the molarity of \[\text{0}\text{.2 N N}{{\text{a}}_{\text{2}}}\text{C}{{\text{O}}_{\text{3}}}\]solution?
  A)
   0.1 M            
  done clear
  B)
   OM
  done clear
  C)
   0.4 M            
  done clear
  D)
   0.2 M
  done clear
  View Answer play_arrow

• question_answer78) The order of a reaction with rate equal to \[kC_{A}^{3/2}C_{B}^{-1/2}\]is
  A)
   1
  done clear
  B)
   \[-\frac{1}{2}\]
  done clear
  C)
   \[-\frac{3}{2}\]
  done clear
  D)
   2
  done clear
  View Answer play_arrow

• question_answer79) A simple method to remove peroxides from ethers is to treat them with an aqueous solution of
  A)
   KI             
  done clear
  B)
   KCNS
  done clear
  C)
  \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}\]      
  done clear
  D)
  \[B{{r}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer80) Which of the following is the predominant product in the reaction of \[\text{HOBr}\]with propene?
  A)
   2-bromo-l-propanol
  done clear
  B)
   3-bromo-l-propanol
  done clear
  C)
   2-bromo-2-propanol
  done clear
  D)
   l-bromo-2-propanol
  done clear
  View Answer play_arrow

• question_answer81) Most stable carbonium ion is
  A)
  \[{{\overset{+}{\mathop{\text{C}}}\,}_{2}}{{H}_{5}}\]
  done clear
  B)
   \[{{(C{{H}_{3}})}_{3}}\overset{+}{\mathop{C}}\,\]
  done clear
  C)
   \[({{C}_{6}}{{H}_{5}})\overset{+}{\mathop{C}}\,\]
  done clear
  D)
   \[{{C}_{6}}{{H}_{5}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer82) In aqueous solutions, the basic strength of amines decreases in the order
  A)
  \[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}N\]
  done clear
  B)
   \[{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N>C{{H}_{3}}N{{H}_{2}}\]
  done clear
  C)
   \[{{(C{{H}_{3}})}_{3}}N>{{(C{{H}_{3}})}_{2}}NH>C{{H}_{3}}N{{H}_{2}}\]
  done clear
  D)
   \[{{(C{{H}_{3}})}_{2}}NH>C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}N\]
  done clear
  View Answer play_arrow

• question_answer83) The most reactive compound towards formation of cyanohydrin on treatment with HCN followed by acidification is
  A)
   benzaldehyde
  done clear
  B)
   p-nitrobenzaldehyde                 
  done clear
  C)
   phenylacetaldehyde
  done clear
  D)
   p-hydroxybenzaldehyde
  done clear
  View Answer play_arrow

• question_answer84) Producer gas is the mixture of
  A)
   \[CO+{{N}_{2}}\]
  done clear
  B)
   \[CO+{{H}_{2}}\]
  done clear
  C)
   \[\text{CO}\,\text{+}\,\text{water}\,\text{vapour}\]
  done clear
  D)
   \[{{N}_{2}}+C{{H}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer85) What is the freezing point of a solution containing \[\text{8}\text{.1 g HBr}\]in 100 g water assuming the acid to be 90% ionised? (\[{{k}_{f}}\]for water\[=1.86\,\text{K}\,\text{mo}{{\text{l}}^{-1}}\])
  A)
  \[0.85{{\,}^{o}}C\]
  done clear
  B)
   \[-3.53{{\,}^{o}}C\]
  done clear
  C)
   \[0{{\,}^{o}}C\]
  done clear
  D)
   \[-0.35{{\,}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer86) Number of elements presents in the fifth period of Periodic Table is
  A)
   32             
  done clear
  B)
   10
  done clear
  C)
   18             
  done clear
  D)
   8
  done clear
  View Answer play_arrow

• question_answer87) \[{{[Sc({{H}_{2}}{{O}_{6}})]}^{3+}}\]ion is
  A)
   colourless and diamagnetic
  done clear
  B)
   coloured and octahedral
  done clear
  C)
   colourless and paramagnetic
  done clear
  D)
   coloured and paramagnetic
  done clear
  View Answer play_arrow

• question_answer88) Which one has the highest boiling point?
  A)
  \[{{H}_{2}}\]
  done clear
  B)
  \[Xe\]
  done clear
  C)
   \[C{{H}_{4}}\]
  done clear
  D)
   \[He\]
  done clear
  View Answer play_arrow

• question_answer89) Benzaldehyde reacts with ammonia to form
  A)
   benzaldehyde ammonia
  done clear
  B)
   urotropine
  done clear
  C)
   hydrobenzamide
  done clear
  D)
   ammonium chloride
  done clear
  View Answer play_arrow

• question_answer90) Identify Z in the sequence \[C{{H}_{3}}COON{{H}_{4}}\xrightarrow{\Delta }X\xrightarrow[\Delta ]{{{P}_{2}}{{O}_{5}}}Y\xrightarrow{{{H}_{2}}O/{{H}^{+}}}Z\]
  A)
   \[C{{H}_{3}}C{{H}_{2}}CON{{H}_{2}}\]
  done clear
  B)
   \[C{{H}_{3}}CN\]
  done clear
  C)
   \[C{{H}_{3}}COOH\]
  done clear
  D)
   \[{{(C{{H}_{3}}CO)}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer91) Acetic anhydride reacts with diethyl ether in the presence of anhydrous \[\text{AlC}{{\text{l}}_{\text{3}}}\]to give
  A)
  \[C{{H}_{3}}C{{H}_{2}}COOH\]
  done clear
  B)
   \[C{{H}_{3}}C{{H}_{2}}COOC{{H}_{2}}C{{H}_{3}}\]
  done clear
  C)
   \[C{{H}_{3}}COOC{{H}_{3}}\]
  done clear
  D)
   \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer92) Denaturation of proteins leads to loss of its biological activity by                     
  A)
   formation of amino acids
  done clear
  B)
   loss of primary structure
  done clear
  C)
   loss of both primary and secondary structures
  done clear
  D)
   loss of both secondary and tertiary structures
  done clear
  View Answer play_arrow

• question_answer93) The compound with highest boiling point
  A)
   \[n-\]hexane                
  done clear
  B)
   \[n-\]pentane
  done clear
  C)
   2, 2-dimethylpropane              
  done clear
  D)
   2-methylbutane
  done clear
  View Answer play_arrow

• question_answer94) Which   of the   following   statements concerning transition elements is false?
  A)
   They are all metals
  done clear
  B)
   They easily form complex coordination compounds            
  done clear
  C)
   Compounds containing their ions are mostly coloured
  done clear
  D)
   They show multiple oxidation states always differing by units of two
  done clear
  View Answer play_arrow

• question_answer95) In the manufacture of bromine from sea water,  the mother liquor containing bromide is treated with
  A)
   carbon dioxide  
  done clear
  B)
   chlorine
  done clear
  C)
   iodine          
  done clear
  D)
   sulphur dioxide
  done clear
  View Answer play_arrow

• question_answer96) A transition element X has the configuration \[[Ar]{{d}^{4}}\]in its\[+\,3\]oxidation state. Its atomic number is
  A)
   25            
  done clear
  B)
   26
  done clear
  C)
   22            
  done clear
  D)
   19
  done clear
  View Answer play_arrow

• question_answer97) The element with the electronic configuration as \[[Ar]\,3{{d}^{10}}4{{s}^{2}}4{{p}^{3}}\] represents a
  A)
   metal
  done clear
  B)
   non-metal
  done clear
  C)
   metalloid
  done clear
  D)
   transition element
  done clear
  View Answer play_arrow

• question_answer98) The number of moles of\[{{\text{H}}_{\text{2}}}\]in 0.224 L of hydrogen gas at STP (273 K, 1 atm), is
  A)
   0.1            
  done clear
  B)
   0.01
  done clear
  C)
   0.001          
  done clear
  D)
   1
  done clear
  View Answer play_arrow

• question_answer99) The molecule which has zero dipole moment is
  A)
   \[C{{H}_{3}}Cl\]
  done clear
  B)
   \[N{{F}_{3}}\]
  done clear
  C)
   \[B{{F}_{3}}\]
  done clear
  D)
   \[Cl{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer100) Green house effect is caused by
  A)
   \[N{{O}_{2}}\]
  done clear
  B)
   \[CO\]
  done clear
  C)
   \[NO\]
  done clear
  D)
   \[C{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer101) Algae attached to stone is called
  A)
   epilithic         
  done clear
  B)
   epifolic
  done clear
  C)
   coenolithic       
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer102) Prokaryotic ribosome has sedimentation coefficient of
  A)
  \[80S\]
  done clear
  B)
   \[70S\]
  done clear
  C)
   \[40S\]
  done clear
  D)
   \[60S\]
  done clear
  View Answer play_arrow

• question_answer103) Scientific name of green gram is
  A)
   Vigna mungo     
  done clear
  B)
   Vigna radiate
  done clear
  C)
   Phaseolus mungo
  done clear
  D)
   Phaseolus sinensis
  done clear
  View Answer play_arrow

• question_answer104) Rhizophora sp. is characteristic of
  A)
   tropical rainforest
  done clear
  B)
   tropical deciduous forest
  done clear
  C)
   mangrove belt
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer105) Serum is
  A)
   blood without fibrinogen
  done clear
  B)
   lymph without corpuscles
  done clear
  C)
   blood without corpuscles and fibrinogen
  done clear
  D)
   lymph
  done clear
  View Answer play_arrow

• question_answer106) Animals eating own faecal matter are
  A)
   sanguivorous    
  done clear
  B)
   frugivorous
  done clear
  C)
   coprophagous   
  done clear
  D)
   detritivorous
  done clear
  View Answer play_arrow

• question_answer107) Periderm is formed by
  A)
   phellem         
  done clear
  B)
   phelloderm
  done clear
  C)
   phellogen       
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer108) A fleshy-fruit with leathery exocarp is called
  A)
   drupe           
  done clear
  B)
   berry
  done clear
  C)
   pome           
  done clear
  D)
   hesperidium
  done clear
  View Answer play_arrow

• question_answer109) Osmoregulation in Paramecium is a function of
  A)
   contractile vacuole
  done clear
  B)
   trichocysts
  done clear
  C)
   cytopyge
  done clear
  D)
   cytostome
  done clear
  View Answer play_arrow

• question_answer110) Severe Acute Respiratory Syndrome (SARS)
  A)
   is caused by a variant of Pneumococcus pneumoniae
  done clear
  B)
   is caused by a variant of the common cold virus (corona virus)
  done clear
  C)
   is an acute form of asthma
  done clear
  D)
   affects non-vegetarians much faster than the vegetarians
  done clear
  View Answer play_arrow

• question_answer111) Common featue of Euglena, Amoeba, Trypanosoma and Entamoeba is
  A)
   binary fission
  done clear
  B)
   multiple fission
  done clear
  C)
   holozoic nutrition
  done clear
  D)
   contractile vacuole
  done clear
  View Answer play_arrow

• question_answer112) In higher vertebrates, SA-node helps in
  A)
   conduction of blood
  done clear
  B)
   initiation of heart beat
  done clear
  C)
   opening of tricuspid valve
  done clear
  D)
   opening of bicuspid value
  done clear
  View Answer play_arrow

• question_answer113) Minamata disease is caused due to presence of........ in water.
  A)
   cadmium       
  done clear
  B)
   lead
  done clear
  C)
   arsenic         
  done clear
  D)
   mercury
  done clear
  View Answer play_arrow

• question_answer114) A lake with an inflow of domestic sewage rich in organic waste may result in
  A)
   drying of the lake very soon due to algal bloom
  done clear
  B)
   an increased production of fish due to lot of nutrients
  done clear
  C)
   death of fish due to lack of oxygen
  done clear
  D)
   increased population of aquatic food web organisms
  done clear
  View Answer play_arrow

• question_answer115) Storage food of fungi is
  A)
   glucose          
  done clear
  B)
   glycogen
  done clear
  C)
   carbohydrate     
  done clear
  D)
   starch
  done clear
  View Answer play_arrow

• question_answer116) Root cap is absent in
  A)
   Pandanus       
  done clear
  B)
   Pistia
  done clear
  C)
   Ipomoea        
  done clear
  D)
   mangrove
  done clear
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• question_answer117) The structure present in cyanobacteria (BGA) helping in nitrogen-fixation is
  A)
   haplosperm     
  done clear
  B)
   holostrum
  done clear
  C)
   holotrema       
  done clear
  D)
   heterocyst
  done clear
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• question_answer118) Triple fusion in angiosperms is the fusion of second sperm with
  A)
   antipodal cell and one synergid cell
  done clear
  B)
   two antipodal cells
  done clear
  C)
   two synergid cells
  done clear
  D)
   two polar nuclei
  done clear
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• question_answer119) Litmus is obtained from
  A)
   lichen           
  done clear
  B)
   algae
  done clear
  C)
   fungi            
  done clear
  D)
   Protozoa
  done clear
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• question_answer120) Which amino acids are present in histones?
  A)
   Lysine and histidine
  done clear
  B)
   Valine and histidine
  done clear
  C)
   Arginine and lysine
  done clear
  D)
   Arginine and histidine
  done clear
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• question_answer121) The stack of vesicles found inside plastids is
  A)
   thylakoid       
  done clear
  B)
   granum
  done clear
  C)
   stroma          
  done clear
  D)
   oxysomes
  done clear
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• question_answer122) A plant which lives for a few days is called
  A)
   annual          
  done clear
  B)
   perennial
  done clear
  C)
   biennial         
  done clear
  D)
   ephemeral
  done clear
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• question_answer123) Simlipal is a
  A)
   national park           
  done clear
  B)
   sanctuary
  done clear
  C)
   biosphere reserve    
  done clear
  D)
   zoo
  done clear
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• question_answer124) Ions that must be present for binding the cross bridges is
  A)
  \[N{{a}^{+}}\]
  done clear
  B)
   \[C{{a}^{2+}}\]
  done clear
  C)
   \[{{K}^{+}}\]
  done clear
  D)
   \[M{{g}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer125) Recognition sequence in Eco RI is
  A)
   GAATTC       
  done clear
  B)
   GGCC
  done clear
  C)
   AAGCTT       
  done clear
  D)
   CTGCAG
  done clear
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• question_answer126) The species listed in Red Data Book are
  A)
   threatened      
  done clear
  B)
   endangered
  done clear
  C)
   rare             
  done clear
  D)
   All of these
  done clear
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• question_answer127) Which is non-reducing sugar?
  A)
   Glucose         
  done clear
  B)
   Galactose
  done clear
  C)
   Mannose      
  done clear
  D)
   Sucrose
  done clear
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• question_answer128) L Dreaming occurs in
  A)
   a-sleep         
  done clear
  B)
   REM sleep
  done clear
  C)
   deep sleep       
  done clear
  D)
   slow wave sleep
  done clear
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• question_answer129) Which of the following term is used to describe the component isolated from a plant, for in vitro culturing in the specific medium?
  A)
   Callus          
  done clear
  B)
   Embryoid
  done clear
  C)
   Synthetic seeds  
  done clear
  D)
   Explant
  done clear
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• question_answer130) Which is not true about spherosomes?
  A)
   Arise from endoplasmic reticulum
  done clear
  B)
   Related to fat
  done clear
  C)
   Single membrane bound structure
  done clear
  D)
   Involved in photorespiration
  done clear
  View Answer play_arrow

• question_answer131) Inflorescence of family-Compositae is
  A)
   perianth        
  done clear
  B)
   lodicule
  done clear
  C)
   capitulum       
  done clear
  D)
   hypanthodium
  done clear
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• question_answer132) Which of the following possesses a hard exoskeleton formed by calcium carbonate?
  A)
   Physalia         
  done clear
  B)
   Aurelia
  done clear
  C)
   Gorallium       
  done clear
  D)
   Halistemma
  done clear
  View Answer play_arrow

• question_answer133) In man, four phenotypes of blood groups are due to the presence of antigen-A and  antigen-B on the RBC. The chromosome that has the gene to control these antigens is
  A)
   X-chromosome
  done clear
  B)
   21st  chromosome
  done clear
  C)
   9th  chromosome
  done clear
  D)
   7th  chromosome
  done clear
  View Answer play_arrow

• question_answer134) During the development of zygote of earthworm, macromeres develop into
  A)
   mesoderm      
  done clear
  B)
   endoderm
  done clear
  C)
   ectoderm       
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer135) Which of the following animals is not only a living fossil but also considered as connecting link?
  A)
   Sphenodon      
  done clear
  B)
   Limulus
  done clear
  C)
   Neopilina        
  done clear
  D)
   Latimeria
  done clear
  View Answer play_arrow

• question_answer136) Which one of the following families shows both freedom and fusion in four successive whorls of the flower from exterior in different members?
  A)
   Malvaceae      
  done clear
  B)
   Solanaeeae        
  done clear
  C)
   Asteraceae       
  done clear
  D)
   Liliaceae
  done clear
  View Answer play_arrow

• question_answer137) The scientist, who through his extensive researches found that the regular recurrence of rust disease every years on wheat plants in India is due to the pathogenic fungal inoculum carried through wind currents from hills to plains
  A)
   MOP tyengar   
  done clear
  B)
   MS Swaminathan
  done clear
  C)
   P Maheshwari   
  done clear
  D)
   KC Mehta
  done clear
  View Answer play_arrow

• question_answer138) A term helotism is used for the symbiosis of
  A)
   algae and fungi  
  done clear
  B)
   algae and Cycas    
  done clear
  C)
   algae and bacteria
  done clear
  D)
   Pmus and fungi
  done clear
  View Answer play_arrow

• question_answer139) Which one of the following statements is incorrect about the properties of DNA?
  A)
   DNA is denatured when heated up to \[70{{\,}^{o}}C\]
  done clear
  B)
   DNA shows high absorption of UV radiation at \[\text{260}\,\text{ }\!\!\mu\!\!\text{ m}\]
  done clear
  C)
   DNA directly participates in protein    synthesis
  done clear
  D)
   Pyrimidines of DNA are cytosine and thymine
  done clear
  View Answer play_arrow

• question_answer140) Which of the following pairs in angiosperms are diploid and triploid respectively?
  A)
   Secondary nucleus and endosperm
  done clear
  B)
   Microspore mother cell and egg cell
  done clear
  C)
   Polar nucleus and secondary nucleus
  done clear
  D)
   Endosperm and antipodal cells
  done clear
  View Answer play_arrow

• question_answer141) Wearing isolated a dormancy inducing substance from the leaves of a plant. From which type of gynoecium does the fruit of that plant develop?
  A)
   Bicarpellary syncarpous gynoecium with inferior ovary
  done clear
  B)
   Bicarpellary syncarpous gynoecium with superior ovary
  done clear
  C)
   Tricarpellary syncarpous gynoecium with superior ovary
  done clear
  D)
   Monocarpellary gynoecium with half inferior ovary
  done clear
  View Answer play_arrow

• question_answer142) In a tetradynamous androecium, one of the following is seen.
  A)
   Outer whorl of four smaller stamens and inner whorl of two larger stamens
  done clear
  B)
   Outer whorl of two larger stamens and inner whorl of four smaller stamens
  done clear
  C)
   Outer whorl of four larger stamens and inner whorl of two smaller stamens
  done clear
  D)
   Outer whorl of two smaller stamens and inner whorl of four larger stamens
  done clear
  View Answer play_arrow

• question_answer143) When a cross is conducted between black feathered hen and a white-feathered cock, blue-feathered fowls are formed. When these fowls are allowed for interbreeding, in \[{{\text{F}}_{2}}-\]generation, there are 20 blue fowls. What would be the number of black and white fowls?
  A)
   Black 20, white 10
  done clear
  B)
   Black 20, white 20
  done clear
  C)
   Black 10, white 10
  done clear
  D)
   Black 10, white 20
  done clear
  View Answer play_arrow

• question_answer144) In which one of the following reactions, oxidative decarboxylation does not occur?
  A)
   Malic acid \[\to \] Pyruvic acid
  done clear
  B)
   Pyruvic acid \[\to \] Acetyl Co-A
  done clear
  C)
   Glyceraldehyde-3-phosphate\[\to \] 1, 3-bisphosphoglyceric acid
  done clear
  D)
  \[\alpha -\] ketoglutaric acid \[\to \] Succinyl Co-A
  done clear
  View Answer play_arrow

• question_answer145) Efferent salivary ducts in Periplaneta open into
  A)
   stomach
  done clear
  B)
   base of pharynx
  done clear
  C)
   base of hypopharynx
  done clear
  D)
   base of oesophagus
  done clear
  View Answer play_arrow

• question_answer146) The nasal chamber of rabbit has three thin twisted bony plates called conchae. They are lined by
  A)
   striated cuboidal epithelium
  done clear
  B)
   simple cuboidal epithelium
  done clear
  C)
   simple squamous epithelium
  done clear
  D)
   simple ciliated columnar epithelium
  done clear
  View Answer play_arrow

• question_answer147) Which one of the following enzymes has no role in protein synthesis?
  A)
   RNA polymerase
  done clear
  B)
   Restriction endonuclease
  done clear
  C)
   Amino acyl synthetase   
  done clear
  D)
   Peptidyl transferase
  done clear
  View Answer play_arrow

• question_answer148) Each male genital opening of Pheretima has separate opening of
  A)
   two ducts       
  done clear
  B)
   three ducts
  done clear
  C)
   five ducts       
  done clear
  D)
   four ducts
  done clear
  View Answer play_arrow

• question_answer149) Mammals evolved from therapsid reptiles in Triassic period. The type of skull in these reptiles is
  A)
   anapsid skull     
  done clear
  B)
   parapsid skull
  done clear
  C)
   synapsid skull   
  done clear
  D)
   diapsid skull
  done clear
  View Answer play_arrow

• question_answer150) When a cow is crossed to a bull and the female progeny is yielding more milk than its mother. From this, it is inferred
  A)
   more number of genes for high yielding milk are inherited, only from the female parent
  done clear
  B)
   more number of genes for high yielding milk are inherited only the male parent
  done clear
  C)
   more number of genes for high yielding milk are inherited from both the parents
  done clear
  D)
   the progeny through mutation achieved more number of genes for high yielding milk.
  done clear
  View Answer play_arrow