Solved papers for Haryana PMT Haryana PMT Solved Paper-2010

done Haryana PMT Solved Paper-2010 Total Questions - 180

• question_answer1) A steel ball of mass 0.1 kg falls freely from a height of 10 m and bounces to a height of 5.4 m from the ground. If the dissipated energy in this process is absorbed by the ball, the rise in its temperature is (specific heat of steel = 460 J-kg \[^{-10}{{C}^{-1}},g=10m{{s}^{-2}}\]
  A)
   \[{{0.01}^{0}}C\]
  done clear
  B)
          \[{{0.1}^{0}}C\]
  done clear
  C)
   \[{{1}^{0}}C\]                                   
  done clear
  D)
   \[{{1.1}^{0}}C\]
  done clear
  View Answer play_arrow

• question_answer2) The fundamental frequency of a closed pipe is 220 Hz. If \[\frac{1}{4}\] of the pipe is filled with water, the frequency of the first overtone of the pipe now is
  A)
   220 Hz                                 
  done clear
  B)
   440 Hz
  done clear
  C)
   880 Hz                                 
  done clear
  D)
   1760 Hz
  done clear
  View Answer play_arrow

• question_answer3) Two point charges -q and +q/2 are situated at the origin and at the point (a, 0, 0) respectively. The point along the X-axis where the electric field vanishes is
  A)
   \[x=\frac{a}{\sqrt{2}}\]               
  done clear
  B)
   \[x=\sqrt{2a}\]
  done clear
  C)
   \[x=\frac{\sqrt{2a}}{\sqrt{2-1}}\]                            
  done clear
  D)
   \[x=\frac{\sqrt{2a}}{\sqrt{2+1}}\]
  done clear
  View Answer play_arrow

• question_answer4) The radii of the inner and outer spheres of a condenser are 9 cm and 10 cm respectively. If the dielectric constant of the medium between the two spheres is 6 and charge on the inner sphere is 18 x 10-9 C, then the potential of inner sphere will be, if the outer sphere is earthed
  A)
   180V                                    
  done clear
  B)
   30V
  done clear
  C)
   18V                                      
  done clear
  D)
   90V
  done clear
  View Answer play_arrow

• question_answer5) A battery is connected to a uniform resistance wire AB and B is earthed. Which one of the following graphs below shows how the current density J varies along AB?
  A)
  
  done clear
  B)
                   
  done clear
  C)
                                                                 
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer6) A moving coil galvanometer is converted into an ammeter reading up to 0.03 A by connecting a shunt of resistance 4r across it. and into an ammeter reading up to 0.06 A when a shunt of resistance r is connected across it. What is the maximum current which can be sent through this galvanometer if no shunt is used?
  A)
   0.01 A                                  
  done clear
  B)
   0.02 A
  done clear
  C)
   0.03 A                                  
  done clear
  D)
   0.04 A
  done clear
  View Answer play_arrow

• question_answer7) A capillary tube is attached horizontally to a constant head arrangement. If the radius of the capillary tube is increased by 10%, then the rate of flow of liquid will change nearly by
  A)
   +10%                                   
  done clear
  B)
   + 46%
  done clear
  C)
   -10%                                    
  done clear
  D)
   - 40%
  done clear
  View Answer play_arrow

• question_answer8) To break a wire of 1 m length, minimum 40 kg weight is required. Then the wire of the same material of double radius and 6 m length will require breaking
  A)
   80 kg weight    
  done clear
  B)
   240 kg weight
  done clear
  C)
   200 kg weight                  
  done clear
  D)
   160 kg weight
  done clear
  View Answer play_arrow

• question_answer9) A bullet of mass m moving with velocity v strikes a suspended wooden block of mass M. If the block rises to a S haight the initial velocity of the block will be
  A)
  \[\sqrt{2gh}\]                                   
  done clear
  B)
  \[\frac{m+m}{m}\sqrt{2gh}\]
  done clear
  C)
   \[\frac{m}{M+m}2gh\]                
  done clear
  D)
   \[\frac{M+m}{M}\sqrt{2gh}\]
  done clear
  View Answer play_arrow

• question_answer10) A hydrogen atom emits a photon corresponding to an electron transition from n = 5 to n = 1. The recoil speed of hydrogen atom is almost (mass   of proton \[\approx 1.6\times {{10}^{-27}}kg)\]
  A)
   \[10m{{s}^{-1}}\]                           
  done clear
  B)
   \[2\times {{10}^{-2}}m{{s}^{-1}}\]
  done clear
  C)
   \[4m{{s}^{-1}}\]                              
  done clear
  D)
   \[8\times {{10}^{2}}m{{s}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer11) Numbers of nuclei of a radioactive substance at time t = 0 are 1000 and 900 at time t = 4 s. Then number of nuclei at time t = 2 s. will be
  A)
   800                                       
  done clear
  B)
   810
  done clear
  C)
   790                                       
  done clear
  D)
   700
  done clear
  View Answer play_arrow

• question_answer12) In transistor, forward bias is always smaller than the reverse bias. The correct reason is
  A)
   to avoid excessive heating of transistor
  done clear
  B)
   to maintain a constant base current
  done clear
  C)
   to produce large voltage gain
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer13) A body falls freely from the top of a tower. It covers 36% of the total height in the last second before striking the ground level. The height of the tower is
  A)
   50m                                     
  done clear
  B)
   75m
  done clear
  C)
   100m                                   
  done clear
  D)
   125m
  done clear
  View Answer play_arrow

• question_answer14) For any two vectors \[\overrightarrow{\text{A}}\]and \[\overrightarrow{\text{B}},\]if \[\overrightarrow{\text{A}}.\]\[\overrightarrow{\text{B}}=\]\[|\overrightarrow{\text{A}}\text{ }\!\!\times\!\!\text{ }\overrightarrow{\text{B}}|,\]is equal to
  A)
   \[\sqrt{{{A}^{2}}+{{B}^{2}}}\]                   
  done clear
  B)
   \[A+B\]
  done clear
  C)
   \[\sqrt{{{A}^{2}}+{{B}^{2}}+\frac{AB}{\sqrt{2}}}\]           
  done clear
  D)
   \[\sqrt{{{A}^{2}}+{{B}^{2}}+\sqrt{2}AB}\]
  done clear
  View Answer play_arrow

• question_answer15) A particle is projected with a velocity v such that its range on the horizontal plane is twice the greatest height attained by it. The range of the projectile is (where g is acceleration due to gravity)
  A)
   \[\frac{4{{v}^{2}}}{5g}\]                                              
  done clear
  B)
   \[\frac{4g}{5{{v}^{2}}}\]
  done clear
  C)
   \[\frac{{{v}^{2}}}{g}\]                                   
  done clear
  D)
   \[\frac{4{{v}^{2}}}{\sqrt{{}}5g}\]
  done clear
  View Answer play_arrow

• question_answer16) A body of mass 10 kg slides along a rough horizontal surface. The coefficient of friction is I\[1/\sqrt{3}\]. Taking g = \[10m/{{s}^{2}},\] the least force which acts at an angle of 30° to the horizontal is
  A)
   25 N                                     
  done clear
  B)
   100 N
  done clear
  C)
   50 N                                     
  done clear
  D)
  \[\frac{50}{\sqrt{3}}N\]  
  done clear
  View Answer play_arrow

• question_answer17) When a uniform solid sphere and a disc of the same mass and of the same radius roll down an inclined smooth plane from rest to the same distance, then the ratio of the times taken by them is
  A)
   15 : 14                                 
  done clear
  B)
   \[{{15}^{2}}:{{14}^{2}}\]
  done clear
  C)
   \[\sqrt{14} :\sqrt{15}\]                            
  done clear
  D)
   14:15
  done clear
  View Answer play_arrow

• question_answer18) The mass of the moon is \[\frac{1}{81}\] of the earth but gravitational pull is -\[\frac{1}{6}\]of the earth. It is due to the fact that
  A)
   the radius of the moon is \[\frac{81}{6}\] of the earth
  done clear
  B)
   the radius of the earth is \[\frac{9}{\sqrt{6}}\] of the moon
  done clear
  C)
   moon is the satellite of the earth
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer19) If the work done in blowing a bubble of volume V is W, then the work done in blowing the bubble of volume 2 V from the same soap solution will be
  A)
   W/2                                     
  done clear
  B)
   \[\sqrt{2}W\]
  done clear
  C)
   \[\sqrt[3]{2}W\]                             
  done clear
  D)
   \[\sqrt[3]{4}W\]
  done clear
  View Answer play_arrow

• question_answer20) Air is filled at \[60{}^\circ C\] in a vessel of open mouth. The vessel is heated to a temperature T so that 1/4th part of air escapes. Assuming the volume of the vessel remaining constant, the value of T is
  A)
  \[80{}^\circ C\]
  done clear
  B)
  \[444{}^\circ C\]
  done clear
  C)
  \[333{}^\circ C\]
  done clear
  D)
  \[171{}^\circ C\]
  done clear
  View Answer play_arrow

• question_answer21) A gas expands with temperature according to the relation \[V=K{{T}^{2/3}}.\] what is the work done when the temperature changes by 30°C?
  A)
   10 R                                      
  done clear
  B)
   20 R
  done clear
  C)
   30 R                                      
  done clear
  D)
   40 R
  done clear
  View Answer play_arrow

• question_answer22) There are two spherical balls A and B of the same material with same surface, but the diameter of A is half that of B. If A and B are heated to the same temperature and then allowed to cool, then
  A)
   rate of cooling is same in both
  done clear
  B)
   rate of cooling of A is four times that of B
  done clear
  C)
   rate of cooling of A is twice that of B
  done clear
  D)
   rate of cooling of A is \[\frac{1}{4}\] times that of B
  done clear
  View Answer play_arrow

• question_answer23) A pendulum has time period T in air when it is made to oscillate in water, it acquired a time period T=\[\sqrt{2}\]T. The density of the pendulum bob is equal to (density of water =1)
  A)
   \[\sqrt{2}\]                                       
  done clear
  B)
   2
  done clear
  C)
   \[2\sqrt{2}\]                                     
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer24) 24.      Total surface area of a cathode is \[0.05\text{ }{{m}^{2}}\] and 1    A current passes through it for 1 h. Thickness of            nickel deposited on the cathode is (given that    density of nickel = 9 g/cc and its \[ECE=3.04\times {{10}^{-~~4}}g/C\])
  A)
   2.4m                                    
  done clear
  B)
   2.4 \[\mu \]m
  done clear
  C)
   2.4 mm                               
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer25) Two bulbs consume same power when operated at 200 V and 300 V respectively. When these bulbs are connected in series across a DC source of 500 V, then
  A)
   ratio of potential differences across them is 3/2
  done clear
  B)
   ratio of potential differences across them is 9/4
  done clear
  C)
   ratio of powers consumed across them is 4/9 
  done clear
  D)
   ratio of powers consumed across them is 2/3
  done clear
  View Answer play_arrow

• question_answer26) A winding wire which is used to frame a solenoid can bear a maximum 10 A current. If length of solenoid is 80 cm and its cross-sectional radius is 3 cm then required length of winding wire is (B = 0.2 T)
  A)
   \[1.2\times {{10}^{2}}m\]                           
  done clear
  B)
   \[4.8\times {{10}^{2}}m\]
  done clear
  C)
   \[2.4\times {{10}^{3}}m\]                           
  done clear
  D)
   \[6\times {{10}^{3}}m\]
  done clear
  View Answer play_arrow

• question_answer27) A wire of length L is bent in the form of a circular coil and current i is passed through it. If this coil is placed in a magnetic field then the torque acting on the coil will be maximum when the number of turns is
  A)
   as large as possible        
  done clear
  B)
   any number
  done clear
  C)
   2                                            
  done clear
  D)
   1
  done clear
  View Answer play_arrow

• question_answer28) The magnetic moment produced in a substance of 1 g is \[6\times {{10}^{-7}}{{A}^{-}}{{m}^{2}}.\] If its density is \[5\text{ }g/c{{m}^{3}},\] then the intensity of magnetization in A/m will be
  A)
   \[8.3\times {{10}^{6}}\]                               
  done clear
  B)
   \[3.0\]
  done clear
  C)
   \[1.2\times {{10}^{-7}}\]                             
  done clear
  D)
   \[3\times {{10}^{-}}^{6}\]
  done clear
  View Answer play_arrow

• question_answer29) A coil of Cu wire (radius r, self-inductance L) is bent in two concentric turns each having  radius \[\frac{r}{2.}\] The self-inductance is now
  A)
   2L                                          
  done clear
  B)
   L
  done clear
  C)
   4L                                          
  done clear
  D)
   \[\frac{L}{2.}\]
  done clear
  View Answer play_arrow

• question_answer30) In an L-C-R circuit R=100\[\Omega \]. When capacitance C is removed, the current lags behind the voltage by \[\frac{\pi }{3}.\], when inductance L is removed, the current leads the voltage by \[\frac{\pi }{3}.\], The impedance of the circuit is
  A)
   50 \[\Omega \]                               
  done clear
  B)
   100 \[\Omega \]
  done clear
  C)
   200 \[\Omega \]                             
  done clear
  D)
   400 \[\Omega \]
  done clear
  View Answer play_arrow

• question_answer31) If maximum velocity with which an electron can  be  emitted  from  photo-cell  is \[4\times {{10}^{8}}cm/s,\] the stopping potential is (mass of electron \[=9\times {{10}^{-}}^{31}kg\])
  A)
   30V
  done clear
  B)
   45V
  done clear
  C)
   59V
  done clear
  D)
   Information is insufficient
  done clear
  View Answer play_arrow

• question_answer32) If the momentum of an electron is changed by \[\Delta p\] then the de-Broglie wavelength associated with it changes by 0.50%. The initial momentum of electron will be
  A)
   \[\frac{\Delta p}{200}\]                                               
  done clear
  B)
   \[\frac{\Delta p}{199}\]
  done clear
  C)
   \[199\Delta p\]               
  done clear
  D)
   \[400\Delta p\]
  done clear
  View Answer play_arrow

• question_answer33) For characteristic X-ray some material
  A)
  \[E({{K}_{\gamma }})<E({{K}_{\beta }})<E({{K}_{\alpha }})\]
  done clear
  B)
  \[E({{K}_{\alpha }})<E({{L}_{\beta }})<E({{M}_{\alpha }})\]
  done clear
  C)
   \[\lambda ({{K}_{\gamma }})<\lambda ({{K}_{\beta }})<\lambda ({{K}_{\alpha }})\]
  done clear
  D)
   \[\lambda ({{M}_{\alpha }})<\lambda ({{L}_{\alpha }})<\lambda ({{K}_{\alpha }})\]
  done clear
  View Answer play_arrow

• question_answer34) A convergent beam of light is incident on a convex mirror so as to converge to a distance 12 cm from the pole of the mirror. An inverted image of the same size is formed coincident with the virtual object. What is the focal length of the mirror?
  A)
   24cm                                   
  done clear
  B)
   12cm
  done clear
  C)
   6 cm                                     
  done clear
  D)
   3 cm
  done clear
  View Answer play_arrow

• question_answer35) When a ray is refracted from one medium to another, the wavelength changes from \[6000\overset{\text{o}}{\mathop{\text{A}}}\,\] to \[4000\overset{\text{o}}{\mathop{\text{A}}}\,\]. The critical angle for the interface will be
  A)
   \[{{\cos }^{-1}}\left( \frac{2}{3} \right)\]                              
  done clear
  B)
   \[{{\cos }^{-1}}\left( \frac{2}{\sqrt{3}} \right)\]
  done clear
  C)
   \[{{\cos }^{-1}}\left( \frac{2}{3} \right)\]                              
  done clear
  D)
   \[{{\cos }^{-1}}\left( \frac{2}{\sqrt{3}} \right)\]
  done clear
  View Answer play_arrow

• question_answer36) A telescope using light having wavelength \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\] and using lenses of focal lengths 2.5 cm and 30 cm. If the diameter of the aperture of the objective is 10 cm, then the resolving limit of telescope is
  A)
   \[6.1\times {{10}^{-6}}rad\]                      
  done clear
  B)
   \[5.0\times {{10}^{-6}}rad\]
  done clear
  C)
   \[8.3\times {{10}^{-4}}rad\]                                  
  done clear
  D)
   \[7.3\times {{10}^{-3}}rad\]
  done clear
  View Answer play_arrow

• question_answer37) Light of wavelength 500 nm is used to form interference pattern in Youngs double slit experiment. A uniform glass plate of refractive index 1.5 and thickness 0.1 mm is introduced in the path of one of the interfering beams. The number of fringes which will shift the cross-wire due to this is
  A)
   100                                       
  done clear
  B)
   200
  done clear
  C)
   300                                       
  done clear
  D)
   400
  done clear
  View Answer play_arrow

• question_answer38) A screen is placed 50 cm from a single slit, which is illuminated with \[6000\overset{\text{o}}{\mathop{\text{A}}}\,\] light. If distance between the first and third minima in the diffraction pattern is 3 mm, the width of the slit is
  A)
   0.1mm                                
  done clear
  B)
   0.2mm
  done clear
  C)
   0.3 mm                               
  done clear
  D)
   0.4 mm
  done clear
  View Answer play_arrow

• question_answer39) An optical fibre communication system works on a wavelength of 1.3 \[\mu \]m. The number of subscribers it can feed if a channel requires 20 kHz are
  A)
   \[2.3\times {{10}^{10}}\]                            
  done clear
  B)
   \[1.15\times {{10}^{10}}\]
  done clear
  C)
   \[1\times {{10}^{5}}\]                                  
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer40) When the angle of incidence on a material is \[60{}^\circ \], the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in ms-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
  View Answer play_arrow

• question_answer41) Which of the following waves has the maximum wavelength?
  A)
   X-rays                                 
  done clear
  B)
   IR rays
  done clear
  C)
   UV rays                              
  done clear
  D)
   Radio waves
  done clear
  View Answer play_arrow

• question_answer42) In a parallel plate capacitor the separation between the plates is 3 mm with air between them. Now a 1 mm thick layer of a material of dielectric constant 2 is introduced between the plates due to which the capacity increases. In order to bring its capacity to the original value the separation between the plates must be made
  A)
   1.5 mm                               
  done clear
  B)
   2.5 mm
  done clear
  C)
   3.5 mm                               
  done clear
  D)
   4.5 mm
  done clear
  View Answer play_arrow

• question_answer43) From the dimensional consideration which of the following equations is correct?
  A)
  \[T=2\pi \sqrt{\frac{{{R}^{3}}}{GM}}\]                   
  done clear
  B)
   \[T=2\pi \sqrt{\frac{GM}{{{R}^{3}}}}\]
  done clear
  C)
   \[T=2\pi \sqrt{\frac{GM}{{{R}^{2}}}}\]                  
  done clear
  D)
   \[T=2\pi \sqrt{\frac{{{R}^{2}}}{GM}}\]
  done clear
  View Answer play_arrow

• question_answer44) Two masses of 10 kg and 20 kg respectively are connected by a massless spring as shown in figure. A force of 200 N acts on the 20 kg mass. A: the instant shown, the 10 kg mass has acceleration \[12\text{ }m/{{s}^{2}}.\] What is the acceleration of 20 kg mass?
  A)
   \[12m/{{s}^{2}}\]                           
  done clear
  B)
  \[~4m/{{s}^{2}}\]
  done clear
  C)
   \[10m/{{s}^{2}}\]                           
  done clear
  D)
   Zero
  done clear
  View Answer play_arrow

• question_answer45) Under a constant pressure head, the rate of flow of liquid through a capillary tube is V. If the length of the capillary tube is doubled and the diameter of the bore is halved, the rate of flow would become
  A)
  \[\frac{V}{4}\]                                  
  done clear
  B)
   16 V
  done clear
  C)
  \[\frac{V}{8}\]                                  
  done clear
  D)
  (d\[\frac{V}{12}\]                                                                                   
  done clear
  View Answer play_arrow

• question_answer46) Identify the vitamin whose deficiency causes pernicious anaemia in humans.
  A)
   vitamin-\[{{B}_{1}}\]                                    
  done clear
  B)
   vitamin-\[{{B}_{12}}\]
  done clear
  C)
   vitamin-\[{{B}_{2}}\]  
  done clear
  D)
   vitamin-K
  done clear
  View Answer play_arrow

• question_answer47) Sodium metal crystallizes in body centred cubic lattice with cell edge \[4.29\overset{\text{o}}{\mathop{\text{A}}}\,\]. What is the radius of sodium atom?
  A)
   \[1.48\overset{\text{o}}{\mathop{\text{A}}}\,\]            
  done clear
  B)
   \[2.43\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  C)
   \[1.51\overset{\text{o}}{\mathop{\text{A}}}\,\]            
  done clear
  D)
   \[1.86\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  View Answer play_arrow

• question_answer48) The concentration of hydronium ions in a cup of black coffee is \[1.3\times {{10}^{-5}}M\]. What will be the pH of the coffee?
  A)
   \[4.89\]          
  done clear
  B)
   \[3.89\]
  done clear
  C)
   \[2.20\]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer49) At \[450K\], \[{{K}_{p}}=2.0\times {{10}^{10}}\]/bar for the given reaction at equilibrium \[2S{{O}_{2}}(g)+{{O}_{2}}(g)2S{{O}_{3}}(g)\] What is \[{{K}_{c}}\] at this temperature?
  A)
   \[73.8\times {{10}^{10}}\]
  done clear
  B)
   \[7.38\times {{10}^{11}}\]
  done clear
  C)
   Both (a) and (b)
  done clear
  D)
   Zero
  done clear
  View Answer play_arrow

• question_answer50) The rate constant for a first order reaction is \[60{{s}^{-1}}\]. How much time it will take to reduce the concentration of the reactant to \[1/{{10}^{th}}\] of its initial value?
  A)
   \[3.8\times {{10}^{-2}}s\]
  done clear
  B)
   \[1.26\times {{10}^{13}}s\]
  done clear
  C)
   \[2.01\times {{10}^{13}}s\]
  done clear
  D)
   \[1.097\times {{10}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer51) Gold numbers of protective colloids A, B, C and D are \[0.50\], \[0.01\], \[0.10\]and \[0.005\] respectively. The correct order of their protective power is
  A)
   \[D<A<C<B\]
  done clear
  B)
   \[C<B<D<A\]
  done clear
  C)
   \[A<C<B<D\]
  done clear
  D)
   \[B<D<A<C\]
  done clear
  View Answer play_arrow

• question_answer52) In the following sequence of reactions, the alkene gives the compound B. B is \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\xrightarrow{{{O}_{3}}}A\xrightarrow{{{H}_{2}}O/Zn}B\]
  A)
   \[C{{H}_{3}}C{{H}_{2}}CHO~\] 
  done clear
  B)
   \[C{{H}_{3}}\text{ }C{{H}_{3}}\]
  done clear
  C)
   \[C{{H}_{3}}C{{H}_{2}}COC{{H}_{3}}\]
  done clear
  D)
   \[C{{H}_{3}}CHO\]
  done clear
  View Answer play_arrow

• question_answer53) Nylon-6 6 is obtained from
  A)
   adipic acid and hexamethylene diamine
  done clear
  B)
   tetrafluoroethylene
  done clear
  C)
   vinyl cyanide
  done clear
  D)
   vinyl benzene
  done clear
  View Answer play_arrow

• question_answer54) The correct order of acidity is
  A)
   \[HClO<HCl{{O}_{2}}<HCl{{O}_{3}}<HCl{{O}_{4}}\]
  done clear
  B)
  \[HCl{{O}_{4}}<HCl{{O}_{3}}<HCl{{O}_{2}}<HClO\]
  done clear
  C)
   \[HClO<HCl{{O}_{4}}<HCl{{O}_{3}}<HCl{{O}_{2}}\]
  done clear
  D)
   \[HCl{{O}_{4}}<HCl{{O}_{2}}<HCl{{O}_{3}}<HClO\]
  done clear
  View Answer play_arrow

• question_answer55) Which of the following amines gives carbylamine reaction?
  A)
   \[{{({{C}_{2}}{{H}_{5}})}_{2}}NH\]
  done clear
  B)
   \[{{({{C}_{2}}{{H}_{5}})}_{3}}N\]
  done clear
  C)
   \[C{{H}_{3}}NH{{C}_{6}}{{H}_{5}}\]
  done clear
  D)
   \[{{C}_{2}}{{H}_{5}}N{{H}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer56) Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains
  A)
   mixture of o-and-p-bromotoluenes
  done clear
  B)
   mixture of o-and p-dibromobenzene
  done clear
  C)
   mixture of o-and p-bromoaniline
  done clear
  D)
   mixture of o-and m-bromotoluenes
  done clear
  View Answer play_arrow

• question_answer57) Which of the following is least volatile?
  A)
   \[{{H}_{2}}O\]                 
  done clear
  B)
   \[{{H}_{2}}S\]
  done clear
  C)
   \[{{H}_{2}}Se\]                
  done clear
  D)
   \[{{H}_{2}}Te\]
  done clear
  View Answer play_arrow

• question_answer58) The type of hybridisation of carbon atom in graphite,   diamond   and   Buckminster fullerene are respectively
  A)
   \[s{{p}^{3}}\], \[s{{p}^{3}}\]and \[s{{p}^{2}}\] 
  done clear
  B)
   \[sp\], \[s{{p}^{2}}\] and \[s{{p}^{2}}\]
  done clear
  C)
   \[s{{p}^{2}}\], \[s{{p}^{3}}\] and \[s{{p}^{2}}\]
  done clear
  D)
   \[s{{p}^{2}}\], \[s{{p}^{3}}\] and \[s{{p}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer59) Calculate the mass of urea \[(N{{H}_{2}}CON{{H}_{2}})\] required in making \[2.5kg\]of \[0.25\text{ }molal\] aqueous solution.
  A)
   \[37.5\text{ }g\]
  done clear
  B)
   \[73.5\text{ }g\]
  done clear
  C)
   \[53.7\text{ }g\]
  done clear
  D)
   \[75.3\text{ }g\]
  done clear
  View Answer play_arrow

• question_answer60) What is the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride?
  A)
   \[1.459\]
  done clear
  B)
   \[0.459\]
  done clear
  C)
   \[4.159\]
  done clear
  D)
   None of these      
  done clear
  View Answer play_arrow

• question_answer61) The conductivity of \[0.20M\text{ }KCl\]solution at \[298\text{ }K\]is \[0.0248S\text{ }c{{m}^{-1}}\]. What will be its molar conductivity?
  A)
   \[124S\text{ }c{{m}^{2}}\]
  done clear
  B)
   \[124c{{m}^{-1}}\]
  done clear
  C)
   \[124\text{ }oh{{m}^{-1}}\text{ }c{{m}^{2}}\text{ }equi{{v}^{-1}}\]
  done clear
  D)
   \[124S\text{ }c{{m}^{2}}\text{ }mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer62) Chemical formula of rust is
  A)
   \[F{{e}_{2}}{{O}_{3}}\text{.}{{\text{H}}_{2}}O~\]
  done clear
  B)
   \[F{{e}_{2}}{{O}_{3}}\text{.5}{{\text{H}}_{2}}O~\]
  done clear
  C)
   \[F{{e}_{2}}{{O}_{3}}\text{.x}{{\text{H}}_{2}}O~\]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer63) What will be the half-life period of a first   order   reaction   with   rate   constant\[k=5.5\times {{10}^{-14}}{{s}^{-1}}\]?
  A)
   \[1.26\times {{10}^{13}}s\]
  done clear
  B)
   \[2.16\times {{10}^{13}}s\]
  done clear
  C)
   \[1.26\times {{10}^{-13}}s\]
  done clear
  D)
   \[2.16\times {{10}^{-13}}s\]
  done clear
  View Answer play_arrow

• question_answer64) Ozone can be tested by
  A)
   \[Ag\]                                 
  done clear
  B)
   \[Hg\]               
  done clear
  C)
   \[Zn\]                                  
  done clear
  D)
   \[Au\]
  done clear
  View Answer play_arrow

• question_answer65) The number of \[\sigma \]-bond \[{{P}_{4}}{{O}_{10}}\] is
  A)
   \[6\]                                    
  done clear
  B)
   \[16\]
  done clear
  C)
   \[20\]                                  
  done clear
  D)
   \[7\]              
  done clear
  View Answer play_arrow

• question_answer66) The IUPAC name of the complex \[[Pt{{(N{{H}_{3}})}_{3}}Br(N{{O}_{2}})Cl]Cl\] is
  A)
   triamminechlorobromonitroplatinum (IV) chloride
  done clear
  B)
   triamminebromonitrochloroplatinum (IV) chloride
  done clear
  C)
   triamminebromochloronitroplatinum (IV) chloride
  done clear
  D)
   triamminenitrochlorobromoplatinum (IV) chloride
  done clear
  View Answer play_arrow

• question_answer67) Nitrogen has the electronic configuration \[1{{s}^{2}},2{{s}^{2}},2p_{x}^{1}2p_{y}^{1}2p_{z}^{1}\] and not  \[1{{s}^{2}},2{{s}^{2}},2p_{x}^{2}2p_{y}^{1}2p_{z}^{0}\], which is determined by
  A)
   Pauli exclusion principle
  done clear
  B)
   Aufbau principle
  done clear
  C)
   Hunds rule
  done clear
  D)
   Uncertainty principle
  done clear
  View Answer play_arrow

• question_answer68) Which one of the following is correct order   of the size?
  A)
   \[I>{{I}^{-}}>{{I}^{+}}\]    
  done clear
  B)
   \[I>{{I}^{+}}>{{I}^{-}}\]
  done clear
  C)
   \[{{I}^{+}}>{{I}^{-}}>I\]
  done clear
  D)
   \[{{I}^{-}}>I>{{I}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer69) The number of antibonding electron pair in \[O_{2}^{2-}\] molecular ion on the basis of molecular orbital theory is (atomic no. of \[O=8\])
  A)
   \[2\]                                    
  done clear
  B)
   \[3\]   
  done clear
  C)
   \[4\]                                    
  done clear
  D)
   \[5\]
  done clear
  View Answer play_arrow

• question_answer70) What will be the enthalpy of combustion of ethylene (gas) to form \[C{{O}_{2}}\] (gas) and water at \[298\text{ }K\]and 1 atm pressure? The enthalpies of formation of \[C{{O}_{2}}\], \[{{H}_{2}}O\] and \[{{C}_{2}}{{H}_{4}}\] are \[-393.5,\] \[-241.8,\] \[+52.3\text{ }kJ/mol\] respectively.
  A)
   \[-1332.9\,kJ\,mo{{l}^{-1}}\]
  done clear
  B)
   \[-1322.9\,kJ\,mo{{l}^{-1}}\]
  done clear
  C)
   \[+1332.9kJ\,mo{{l}^{-1}}\]
  done clear
  D)
   \[+1322.9kJ\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer71) For the process to occur under adiabatic conditions, the correct condition is
  A)
   \[\Delta T=0\]                  
  done clear
  B)
   \[\Delta p=0\]
  done clear
  C)
   \[q=0\]                               
  done clear
  D)
   \[W=0\]
  done clear
  View Answer play_arrow

• question_answer72) What is heavy water?
  A)
   \[H_{2}^{18}O\]                             
  done clear
  B)
   \[H_{2}^{16}O\]
  done clear
  C)
   \[{{H}_{2}}{{O}_{3}}\]                                  
  done clear
  D)
   \[{{D}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer73) How many primary amines are possible for the formulae \[{{C}_{4}}{{H}_{11}}N\]?
  A)
   \[1\]                                    
  done clear
  B)
   \[2\]    
  done clear
  C)
   \[3\]                                    
  done clear
  D)
   \[4\]
  done clear
  View Answer play_arrow

• question_answer74) Which of the following alkaline earth metal sulphates is least soluble in water?
  A)
  \[BaS{{O}_{4}}~\]      
  done clear
  B)
   \[MgS{{O}_{4}}~\]
  done clear
  C)
   \[SrS{{O}_{4}}\]
  done clear
  D)
   \[CaS{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer75) The IUPAC name for the hydrocarbon represented by swastik sign  is
  A)
   neo-nonane
  done clear
  B)
   tetraethyl carbon
  done clear
  C)
   2-ethylpentane
  done clear
  D)
   3, 3-diethylpentane
  done clear
  View Answer play_arrow

• question_answer76) In Friedel-Crafts alkylation, besides \[AlC{{l}_{3}}\], the other reactants are
  A)
   \[{{C}_{6}}{{H}_{6}}+N{{H}_{3}}\]
  done clear
  B)
   \[{{C}_{6}}{{H}_{6}}+C{{H}_{4}}\]
  done clear
  C)
   \[{{C}_{6}}{{H}_{6}}+C{{H}_{3}}Cl\]
  done clear
  D)
   \[{{C}_{6}}{{H}_{6}}+C{{H}_{3}}COCl\]
  done clear
  View Answer play_arrow

• question_answer77) The reaction,\[RX+2Na+RX\xrightarrow{Dry\,ether}R-R+2NaX\]is called
  A)
   Sand Meyers reaction
  done clear
  B)
   Wurtz reaction
  done clear
  C)
   Fitting reaction
  done clear
  D)
   Williamsons synthesis
  done clear
  View Answer play_arrow

• question_answer78) In Lucas test an alcohol react immediately and gives insoluble chloride. The alcohol is
  A)
   \[C{{H}_{3}}OH\]        
  done clear
  B)
   \[C{{H}_{3}}C{{H}_{2}}OH\]
  done clear
  C)
   \[{{(C{{H}_{3}})}_{2}}CHOH\]
  done clear
  D)
   \[{{(C{{H}_{3}})}_{3}}COH\]
  done clear
  View Answer play_arrow

• question_answer79) Clemmensens reduction of ketone is carried out in
  A)
   \[{{H}_{2}}\] with Pd catalyst
  done clear
  B)
   glycerol with \[KOH\]
  done clear
  C)
   \[LiAl{{H}_{4}}\] with water
  done clear
  D)
    \[Zn-Hg\]with \[HCl\]
  done clear
  View Answer play_arrow

• question_answer80) Which of the following compounds is most acidic?
  A)
   \[BrC{{H}_{2}}COOH\]   
  done clear
  B)
   \[ClC{{H}_{2}}COOH\]
  done clear
  C)
   \[FC{{H}_{2}}COOH\]
  done clear
  D)
   \[IC{{H}_{2}}COOH\]
  done clear
  View Answer play_arrow

• question_answer81) Hydrolysis of HCN gives
  A)
   acetic acid      
  done clear
  B)
   alcohol
  done clear
  C)
   formaldehyde 
  done clear
  D)
   formic acid
  done clear
  View Answer play_arrow

• question_answer82)  Identify Y.
  A)
   benzophenone  
  done clear
  B)
   acetophenone
  done clear
  C)
   benzoic acid    
  done clear
  D)
   phenol
  done clear
  View Answer play_arrow

• question_answer83) \[RCOOH\xleftarrow{{{H}_{3}}{{O}^{+}}}X\xrightarrow{[H]}RC{{H}_{2}}N{{H}_{2}}\]Identify the X in the above sequence.
  A)
   Alkane nitrile   
  done clear
  B)
   Alkyl is nitrile
  done clear
  C)
   Aldoxime       
  done clear
  D)
   Alkyl nitrile
  done clear
  View Answer play_arrow

• question_answer84) Aldehyde are the first oxidation product of
  A)
   primary alcohol 
  done clear
  B)
   secondary alcohol
  done clear
  C)
   tertiary alcohol  
  done clear
  D)
   dihydric alcohols
  done clear
  View Answer play_arrow

• question_answer85) In Carius method of estimation of halogens, \[0.099g\]organic compound gave \[0.287g\] \[AgCl\]. The percentage of chlorine in the compound will be
  A)
   \[28.6\]                              
  done clear
  B)
   \[71.7\]
  done clear
  C)
   \[35.4\]                              
  done clear
  D)
   \[64.2\]
  done clear
  View Answer play_arrow

• question_answer86) Which one of the following compounds gives aspirin on reacting with acetic anhydride in presence of\[{{H}_{2}}S{{O}_{4}}\]?
  A)
   
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer87) 3-pentanol is an example of
  A)
   primary alcohol
  done clear
  B)
   secondary alcohol
  done clear
  C)
   tertiary alcohol
  done clear
  D)
   aromatic alcohol
  done clear
  View Answer play_arrow

• question_answer88) Which of the following is not correct? White phosphorus \[({{P}_{4}})\] has
  A)
   six \[P-P\] single bonds
  done clear
  B)
   four \[P-P\] single bonds
  done clear
  C)
   four lone pair of electrons
  done clear
  D)
   PPP angle is \[{{60}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer89) Which is the isotones of \[_{32}G{{e}^{76}}\]?
  A)
   \[_{32}G{{e}^{77}}\]                     
  done clear
  B)
   \[_{34}S{{e}^{78}}\]
  done clear
  C)
   \[_{36}K{{r}^{79}}\]                      
  done clear
  D)
   \[_{32}G{{e}^{78}}\]
  done clear
  View Answer play_arrow

• question_answer90) What is the ratio of \[\pi \]-and \[\sigma \]-bonds in benzene?
  A)
   \[1:4\]                                 
  done clear
  B)
   \[2:1\] 
  done clear
  C)
   \[1:1\]                                 
  done clear
  D)
   \[2:2\]  
  done clear
  View Answer play_arrow

• question_answer91) In simple epithelium, the cells are
  A)
   continuously dividing to provide cells for forming an organ
  done clear
  B)
   hardened to provide support to the organs
  done clear
  C)
   loosely connected to one another to form an irregular layer
  done clear
  D)
   cemented directly to one another to form a single layer
  done clear
  View Answer play_arrow

• question_answer92) One function of telomeres in a chromosome is to
  A)
   seal the ends of the chromosomes
  done clear
  B)
   help two chromatids to move towards poles
  done clear
  C)
   starts RNA synthesis
  done clear
  D)
   identify the correct member of the homologous pair of chromosome
  done clear
  View Answer play_arrow

• question_answer93) The length of one turn of the helix in B-form DNA is approximately
  A)
   0.34 nm              
  done clear
  B)
   20 nm
  done clear
  C)
   2nm                                     
  done clear
  D)
   3.4 nm
  done clear
  View Answer play_arrow

• question_answer94) A research scholar once collected certain alga and found that its cells contained chlorophyll-a, chlorophyll-d and phycoerythrin. The alga must belong to
  A)
   Chlorophyceae               
  done clear
  B)
   Rhodophyceae
  done clear
  C)
   Bacillariophyceae           
  done clear
  D)
   Cyanophyceae
  done clear
  View Answer play_arrow

• question_answer95) Eight nucleate embryo sacs are
  A)
   always bisporic
  done clear
  B)
   always tetrasporic
  done clear
  C)
  always monosporic
  done clear
  D)
   sometimes monosporic, sometimes bisporic and sometime tetrasporic
  done clear
  View Answer play_arrow

• question_answer96) Double fertilization (or trbsle fusion) leading to initiation of endosperm  in angiosperms, requires
  A)
   fusion of four or more polar nuclei and the second male gamete only
  done clear
  B)
   fusion of two polar nuclei and second male gamete only
  done clear
  C)
   fusion of one polar nucleus and second male gamete only
  done clear
  D)
   all the above types of fusion in different types of angiosperms
  done clear
  View Answer play_arrow

• question_answer97) Industrial production of ethanol from starch is brought about by a certain species of
  A)
   Azotobacter                     
  done clear
  B)
   Lactobacillus
  done clear
  C)
   Saccharomyces               
  done clear
  D)
   Penicillium
  done clear
  View Answer play_arrow

• question_answer98) During replication of DNA, its two strands separate. Each of these serves as a template for the formation of new strands. Such type of replication is called
  A)
   non-conservative          
  done clear
  B)
   semi-conservative
  done clear
  C)
   flexible               
  done clear
  D)
   conservative
  done clear
  View Answer play_arrow

• question_answer99) During cell division, the spindle fibres get attached to the condensing chromosome at a highly differentiated region. This region is called
  A)
   chromomere                   
  done clear
  B)
   chromocentre
  done clear
  C)
   centriole            
  done clear
  D)
   kinetochore
  done clear
  View Answer play_arrow

• question_answer100) Darwins finches provide an excellent evidence in favour of organic evolution. These are related to which of the following evidences?
  A)
   Embryology
  done clear
  B)
   Palaeontology (or fossils)
  done clear
  C)
   Anatomy
  done clear
  D)
   Biogeography (or geographic distribution)
  done clear
  View Answer play_arrow

• question_answer101) In the life history of ferns, meiosis occurs at the time of
  A)
   formation of spores
  done clear
  B)
   formation of antheridia and archegonia
  done clear
  C)
   formation of gametes
  done clear
  D)
   germination of spores
  done clear
  View Answer play_arrow

• question_answer102) Fixation of one molecule of \[C{{O}_{2}}\] through Calvin cycle requires
  A)
   3 ATP and 3 \[NADP{{H}_{2}}\] molecules
  done clear
  B)
   3 ATP and 2 \[NADP{{H}_{2}}\] molecules
  done clear
  C)
   2 ATP and 1 \[NADP{{H}_{2}}\] molecules
  done clear
  D)
   1 ATP and 2\[NADP{{H}_{2}}\] molecules
  done clear
  View Answer play_arrow

• question_answer103) The plants growing in magnesium-deficient soil, but sprayed with urea would show
  A)
   deep green foliage
  done clear
  B)
   loss of pigments in petals
  done clear
  C)
   early flowering
  done clear
  D)
   yellowing of leaves
  done clear
  View Answer play_arrow

• question_answer104) Special    kinds    of    roots    called pneumatophores are characteristics of the plants growing in
  A)
   sandy soils
  done clear
  B)
   saline soils
  done clear
  C)
   marshy places and salt lakes
  done clear
  D)
   dryland regions
  done clear
  View Answer play_arrow

• question_answer105) Geocarpic fruits are produced by
  A)
   carrot                                  
  done clear
  B)
   onion
  done clear
  C)
   ground nut      
  done clear
  D)
   watermelon
  done clear
  View Answer play_arrow

• question_answer106) Which one of the following characters studied by Mendel in garden pea was found to be dominant?
  A)
   Green seed colour
  done clear
  B)
   Terminal flower position
  done clear
  C)
   Green pod colour
  done clear
  D)
   Wrinkled seed
  done clear
  View Answer play_arrow

• question_answer107) Coconut milk (coconut water) is widely used in tissue culture because it contains
  A)
   auxins                                 
  done clear
  B)
   ethylene
  done clear
  C)
   cytokinin            
  done clear
  D)
   gibberellins
  done clear
  View Answer play_arrow

• question_answer108) What happens during vascularisation in plants?
  A)
   Differentiation of procambium followed by primary phloem and then primary xylem
  done clear
  B)
   Differentiation of procambium, xylem and phloem simultaneously
  done clear
  C)
   Differentation of procambium followed immediately by the development of secondary xylem and phloem
  done clear
  D)
   Differentiation of procambium followed by the development of xylem and phloem
  done clear
  View Answer play_arrow

• question_answer109) Relative Biological Effectiveness  (RBE) usually refers to the damages caused by
  A)
   low temperature           
  done clear
  B)
   high temperature
  done clear
  C)
   radiation            
  done clear
  D)
   pollution
  done clear
  View Answer play_arrow

• question_answer110) Which one of the following is correctly matched pair of a certain plant family and its one example?
  A)
   Malvaceae    - Cotton
  done clear
  B)
   LeguiTunosae - Mango (or Sunflower)
  done clear
  C)
   Cucurbitaceae - Orange
  done clear
  D)
   Brassicaceae - Whezt
  done clear
  View Answer play_arrow

• question_answer111) Extranuclear DNA (genes) are located in
  A)
   lysosomes and chloroplasts
  done clear
  B)
   Golgi complex and ribosomes
  done clear
  C)
   chloroplasts and mitochondria
  done clear
  D)
   ribosomes and mirorhondna
  done clear
  View Answer play_arrow

• question_answer112) RNA and DNA are similar in
  A)
   having similar sugars
  done clear
  B)
   having similar pyrimidine bases
  done clear
  C)
   being capable to replicate
  done clear
  D)
   being polymers of nucleotides
  done clear
  View Answer play_arrow

• question_answer113) In three-dimensional view, a transfer RNA (tRNA) molecule appears
  A)
   Y-shaped           
  done clear
  B)
   S-shaped
  done clear
  C)
   E-shaped           
  done clear
  D)
   L-shaped
  done clear
  View Answer play_arrow

• question_answer114) Anticodon is present on
  A)
   rRNA                                   
  done clear
  B)
   tRNA
  done clear
  C)
   mtUDNA            
  done clear
  D)
   mRNA
  done clear
  View Answer play_arrow

• question_answer115) Zinc as a nutrient is used by the plants in the form of
  A)
   Zn                                         
  done clear
  B)
   \[Z{{n}^{2+}}\]
  done clear
  C)
   ZnO                                      
  done clear
  D)
   \[ZnS{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer116) The triplet codon in mRNA which is usually the starting point for protein synthesis, is
  A)
   AUU                                    
  done clear
  B)
   AUG
  done clear
  C)
   AUA                                     
  done clear
  D)
   AUC
  done clear
  View Answer play_arrow

• question_answer117) The first (initiating) step in photosynthesis is
  A)
   ionisation of water
  done clear
  B)
   attachment of \[C{{O}_{2}}\]to 5-carbon sugar
  done clear
  C)
   excitation of chlorophyll by a photon of light
  done clear
  D)
   formation of ATP
  done clear
  View Answer play_arrow

• question_answer118) In most fungi, the food material is stored in the form of
  A)
   starch                                  
  done clear
  B)
   glucose
  done clear
  C)
   sucrose              
  done clear
  D)
   glycogen
  done clear
  View Answer play_arrow

• question_answer119) The cell organelle involved in  the glycosylation of proteins is
  A)
   ribosome
  done clear
  B)
   peroxisome
  done clear
  C)
   mitochondria
  done clear
  D)
   endoplasmic reticulum
  done clear
  View Answer play_arrow

• question_answer120) Mutation generally produces
  A)
   recessive genes              
  done clear
  B)
   lethal genes
  done clear
  C)
   polygenes         
  done clear
  D)
   dominant genes
  done clear
  View Answer play_arrow

• question_answer121) The replication of DNA is a pre-requisite for a eukaryotic cell to undergo division. During the cell cycle, the DNA replicates in
  A)
   S-phase              
  done clear
  B)
   \[{{G}_{1}}-\]phase
  done clear
  C)
   \[{{G}_{2}}-\]phase                      
  done clear
  D)
   M-phase
  done clear
  View Answer play_arrow

• question_answer122) In a given plant, red colour (R) of fruits is dominant over white fruit (r); and tallness (T) is dominant over dwarfness (t). If a plant with genotype RRTt is crossed with a plant of genotype rrtt, what will be the percentage of tall plants with red fruits in the next generation?
  A)
   100%                                   
  done clear
  B)
   25%
  done clear
  C)
   50%                                      
  done clear
  D)
   75%
  done clear
  View Answer play_arrow

• question_answer123) The largest known ovules, largest male and female gametes, and largest plants are found among
  A)
   tree ferns and some monocots
  done clear
  B)
   angiosperms
  done clear
  C)
   gymnosperms
  done clear
  D)
   dicotyledonous plants
  done clear
  View Answer play_arrow

• question_answer124) The greatest biomass of autotrophs in the worlds oceans is that of
  A)
   benthic brown algae, coastal red algae and daphnids
  done clear
  B)
   benthic diatoms and marine viruses
  done clear
  C)
   sea grasses and slime moulds
  done clear
  D)
   free-floating micro-algae, cyanobacteria and nanoplankton
  done clear
  View Answer play_arrow

• question_answer125) A water ferm 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_answer126) Removal of apical (terminal) bud of a flowering plant (or pruning of a flowering plant) leads to
  A)
   formation of new apical buds
  done clear
  B)
   formation of adventitious roots on the cut side
  done clear
  C)
   early flowering (or stopping of floral growth)
  done clear
  D)
   promotion of lateral branches
  done clear
  View Answer play_arrow

• question_answer127) An institution where valuable plant material likely to become irretrievably lost in the wild or in cultivation is preserved in a viable condition is known as
  A)
   genome             
  done clear
  B)
   gene library
  done clear
  C)
   gene bank         
  done clear
  D)
   herbarium
  done clear
  View Answer play_arrow

• question_answer128) Black rust of wheat is caused by a member species of the genus
  A)
   Mucor                                 
  done clear
  B)
   Rhizopus
  done clear
  C)
   Aspergillus        
  done clear
  D)
   Pucdnia
  done clear
  View Answer play_arrow

• question_answer129) Enzymes are absent in
  A)
   algae                                   
  done clear
  B)
   fungi
  done clear
  C)
   cyanobacteria                  
  done clear
  D)
   viruses
  done clear
  View Answer play_arrow

• question_answer130) For yielding one molecule of glucose, the Calvin cycle turns
  A)
   two times          
  done clear
  B)
   four times
  done clear
  C)
   six times            
  done clear
  D)
   eight times
  done clear
  View Answer play_arrow

• question_answer131)  ATP is a
  A)
   nucleotide        
  done clear
  B)
   nucleosome
  done clear
  C)
   purine base     
  done clear
  D)
   nucleoside
  done clear
  View Answer play_arrow

• question_answer132) Feedback inhibition of an enzymatic reaction is caused by
  A)
   substrate           
  done clear
  B)
   enzyme
  done clear
  C)
   end produce                    
  done clear
  D)
   rise in temperature
  done clear
  View Answer play_arrow

• question_answer133) The correct sequence of plants in a hydrosere is
  A)
   Oak\[\to \]Lantana\[\to \]Scirpus\[\to \]Pistia\[\to \] Volvox
  done clear
  B)
   Volvox \[\to \]Hydrilla \[\to \] Pistia \[\to \] Scirpus \[\to \]Lantana \[\to \]Oak
  done clear
  C)
   Pistia\[\to \] Volvox \[\to \] Scirpus\[\to \] Hydrilla\[\to \]Oak \[\to \]Lantana
  done clear
  D)
   Oak \[\to \] Lantana \[\to \] Volvox\[\to \] Hydnlla \[\to \]Pistia \[\to \]Scirpus
  done clear
  View Answer play_arrow

• question_answer134) Stroma in the chloroplasts of higher plants contains
  A)
   light-independent reaction enzymes
  done clear
  B)
   light-dependent reaction enzymes
  done clear
  C)
   ribosomes
  done clear
  D)
   chlorophyll
  done clear
  View Answer play_arrow

• question_answer135) Mannitol is the stored food in of
  A)
   Chara                                  
  done clear
  B)
   Porphyra
  done clear
  C)
   Fucus                                  
  done clear
  D)
   Gradltaria
  done clear
  View Answer play_arrow

• question_answer136) A young infant may be feeding entirely on mothers milk, which is white in colour but the  tools, which the infant passes out is quite yellowish. This yellow colour is due to
  A)
   intestinal juice
  done clear
  B)
   bile pigments passed through bile juice
  done clear
  C)
   undigested milk protein casein
  done clear
  D)
   pancreatic juice poured into duodenum
  done clear
  View Answer play_arrow

• question_answer137) Semi-conservative replication of DNA was first demonstrated in
  A)
   Drosophila melanogaster
  done clear
  B)
   Escherichia coli
  done clear
  C)
   Streptococcus pneumonia
  done clear
  D)
   Salmonella typhimurium
  done clear
  View Answer play_arrow

• question_answer138) TO Diener discovered a
  A)
   free infectious RNA. 
  done clear
  B)
   free infectious DNA
  done clear
  C)
   infectious protein
  done clear
  D)
   bacteriophage
  done clear
  View Answer play_arrow

• question_answer139) Which of the following pairs is wrongly matched?
  A)
   Detergents       - Lipase
  done clear
  B)
   Alcohol                                - Nitrogenase
  done clear
  C)
   Fruit juice                           - Pectinase
  done clear
  D)
   Textile                                 - Amylase
  done clear
  View Answer play_arrow

• question_answer140) A person likely to develop tetanus is immunised by administering
  A)
   dead germs
  done clear
  B)
   apreformed antibodies
  done clear
  C)
   wide spectrum antibiotics
  done clear
  D)
   weakened germs
  done clear
  View Answer play_arrow

• question_answer141) Globulins contained in human blood plasma are primarily involved in
  A)
   defence mechanisms of body
  done clear
  B)
   osmotic balance of body fluids
  done clear
  C)
   oxygen transport in the blood
  done clear
  D)
   clotting of blood
  done clear
  View Answer play_arrow

• question_answer142) What is not true for genetic code?
  A)
   A codon in mRNA is read in a non-contiguous fashion
  done clear
  B)
   It is nearly universal
  done clear
  C)
   It is degenerate
  done clear
  D)
   It is unambiguous
  done clear
  View Answer play_arrow

• question_answer143) Which one of the following statements is correct?
  A)
   Patients, who had undergone surgery are given cannabinoids to relieve pain
  done clear
  B)
   Benign tumours show the property of metastasis
  done clear
  C)
   Heroin accelerates body functions
  done clear
  D)
   Malignant tumours may exhibit metastasis
  done clear
  View Answer play_arrow

• question_answer144) Peripatus is a connecting link between
  A)
   Ctenophora and Platyhelminthes
  done clear
  B)
   Mollusca and Echinodermata
  done clear
  C)
   Annelida and Arthropoda
  done clear
  D)
   Coelenterata and Porifera
  done clear
  View Answer play_arrow

• question_answer145) The letter T in T-lymphocyte refers to
  A)
   thyroid                               
  done clear
  B)
   thalamus
  done clear
  C)
   tonsil                                   
  done clear
  D)
   thymus
  done clear
  View Answer play_arrow

• question_answer146) The correct sequence of spermatogenetie stages leading to the formation of sperms in a mature human testis is
  A)
  spermatocyte-spermatogonia-spermatid -sperms
  done clear
  B)
   spermatogonia-spermatocyte-spermatid -sperms
  done clear
  C)
   spermatid-spennatocyte-spermatogonia -sperms
  done clear
  D)
   spermatogonia-spermatid-spermatocyte -sperms
  done clear
  View Answer play_arrow

• question_answer147) Montreal Protocol aims at
  A)
   reduction of ozone depleting substances
  done clear
  B)
   biodiversity conservation
  done clear
  C)
   control of water pollution
  done clear
  D)
   control of carbon dioxide emission
  done clear
  View Answer play_arrow

• question_answer148) DDT residues are rapidly passed through food chain causing biomagnification because DDT is
  A)
   lipo soluble
  done clear
  B)
   moderately toxic
  done clear
  C)
   non-toxic to aquatic animals
  done clear
  D)
   water soluble
  done clear
  View Answer play_arrow

• question_answer149) Sickle cell anaemia is
  A)
  an autosomal linked dominant trait
  done clear
  B)
  caused by substitution of valine by glutamic acid in the p-globulin chain of haemoglobin
  done clear
  C)
   caused by a change in base pair of DNA
  done clear
  D)
   characterised by elongated sickle like RBCs with a nucleus
  done clear
  View Answer play_arrow

• question_answer150) Removal of introns and joining the exons in a defined order in a transcription unit is called
  A)
   splicing                               
  done clear
  B)
   tailing
  done clear
  C)
   transformation  
  done clear
  D)
   capping
  done clear
  View Answer play_arrow

• question_answer151) What will happen if the stretch receptors of the urinary bladder wall are totally removed?
  A)
  Urine will not collect in the bladder
  done clear
  B)
   Micturition will continue
  done clear
  C)
  Urine will continue to collect normally in the bladder
  done clear
  D)
   There will be no micturition
  done clear
  View Answer play_arrow

• question_answer152) The kind of tissue that forms the supportive structure in our pinnae (external ears) is also found in
  A)
   vertebrae                          
  done clear
  B)
   nails
  done clear
  C)
   ear ossicles      
  done clear
  D)
   tip of the nose
  done clear
  View Answer play_arrow

• question_answer153) Polyethylene glycol method is used for
  A)
   gene transfer without a vector
  done clear
  B)
   biodiesel production
  done clear
  C)
   seedless fruit production
  done clear
  D)
   energy production from sewage
  done clear
  View Answer play_arrow

• question_answer154) Seminal plasma in human is rich in
  A)
   fructose, calcium and certain enzymes
  done clear
  B)
   fructose and calcium but has no enzymes
  done clear
  C)
   glucose and certain enzymes but has no calcium
  done clear
  D)
   fructose and certain enzymes but poor in calcium
  done clear
  View Answer play_arrow

• question_answer155) Which of the following is a pair of viral diseases?
  A)
   Ringworm, AIDS
  done clear
  B)
   Common cold, AIDS
  done clear
  C)
   Dysentery, common cold
  done clear
  D)
   Typhoid, tuberculosis
  done clear
  View Answer play_arrow

• question_answer156) Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a triplet?
  A)
   Nirenberg and Mathaei
  done clear
  B)
   Hershey and Chase
  done clear
  C)
  Morgan and Sturtevant
  done clear
  D)
   Beadle and Tatum
  done clear
  View Answer play_arrow

• question_answer157) In a standard ECG, which one of the following   alphabets   is   the   correct representation of the respective activity of the human heart?
  A)
   R-Repolarisation of ventricles
  done clear
  B)
   S-Start of systole
  done clear
  C)
   T-End of diastole
  done clear
  D)
   P-Depolarisation of the atria
  done clear
  View Answer play_arrow

• question_answer158) Plasmodesmata are
  A)
   lignified cemented layers between cells
  done clear
  B)
   locomotory structures
  done clear
  C)
   membranes connecting the nucleus with  plasmalemma
  done clear
  D)
  connections between adjacent cells
  done clear
  View Answer play_arrow

• question_answer159) Use of anti-histamines and steroids give a quick relief from
  A)
   allergy                                 
  done clear
  B)
   nausea
  done clear
  C)
   cough                                  
  done clear
  D)
   headache
  done clear
  View Answer play_arrow

• question_answer160) Which one of the following is the most likely reason of not occurring regular menstruation cycle in females?
  A)
  Fertilization of the ovum
  done clear
  B)
  Maintenance of the hypertrophical endometrial lining
  done clear
  C)
   Maintenance of high concentration of sex-hormones in the blood stream
  done clear
  D)
   Retention of well-developed corpus luteum
  done clear
  View Answer play_arrow

• question_answer161) Alzheimer disease in humans is associated with the deficiency of
  A)
   dopamine                         
  done clear
  B)
   glutamic acid
  done clear
  C)
  acetylcholine
  done clear
  D)
   gamma amino butyric acid (GABA)
  done clear
  View Answer play_arrow

• question_answer162) Which one of the following pairs of animal comprises jawless fishes?
  A)
   Lampreys and eels
  done clear
  B)
   Mackerals and rohu
  done clear
  C)
   Lampreys and hag fishes
  done clear
  D)
   Guppies and hag fishes
  done clear
  View Answer play_arrow

• question_answer163) Phylogenetic system of classification is based on
  A)
   evolutionary relationships
  done clear
  B)
   morphological features
  done clear
  C)
   chemical constituents
  done clear
  D)
   floral characters
  done clear
  View Answer play_arrow

• question_answer164) Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?
  A)
   Phytoplankton                
  done clear
  B)
   Fish
  done clear
  C)
   Zooplankton     
  done clear
  D)
   Frog
  done clear
  View Answer play_arrow

• question_answer165) Cytoskeleton is made up of
  A)
  calcium carbonate granules
  done clear
  B)
   callose deposits
  done clear
  C)
   cellulosic microfibrils
  done clear
  D)
   proteinaceous filaments
  done clear
  View Answer play_arrow

• question_answer166) Synapsis occurs between
  A)
   a male and a female gamete
  done clear
  B)
   mRNA and ribosomes
  done clear
  C)
   spindle fibres and centromere
  done clear
  D)
   two homologous chromosomes
  done clear
  View Answer play_arrow

• question_answer167) Select the incorrect statement.
  A)
   Linkage is an exception to the principle or independent assortment in heredity
  done clear
  B)
  Galactosemia is an inborn error of metabolism
  done clear
  C)
   Small population size result in random generic drift in a population
  done clear
  D)
   Baldness is a sex-limited trait
  done clear
  View Answer play_arrow

• question_answer168) Compared to blood our lymph has
  A)
   no plasma
  done clear
  B)
   plasma without proteins
  done clear
  C)
   more WBCs and RBCs
  done clear
  D)
   more RBCs and less WBCs
  done clear
  View Answer play_arrow

• question_answer169) Which part of human brain is concerned with the regulation of body temperature?
  A)
  Medulla oblongata         
  done clear
  B)
   Cerebellum
  done clear
  C)
   Cerebrum                         
  done clear
  D)
   Hypothalamus
  done clear
  View Answer play_arrow

• question_answer170) The cell junctions called tight, adhering and gap junctions are found in
  A)
   muscular tissue               
  done clear
  B)
   connective tissue
  done clear
  C)
   epithelial tissue              
  done clear
  D)
   neural tissue
  done clear
  View Answer play_arrow

• question_answer171) Which one of the following groups of animals is bilaterally symmetrical and triploblastic?
  A)
   Coelenterates (cnidarians)
  done clear
  B)
   Aschelminthes (roundworms)
  done clear
  C)
   Ctenophores
  done clear
  D)
   Sponges
  done clear
  View Answer play_arrow

• question_answer172) The epithelial tissue present on the inner surface of bronchioles and Fallopian tubes is
  A)
   cuboidal                             
  done clear
  B)
   glandular
  done clear
  C)
   ciliated                                
  done clear
  D)
   squamous
  done clear
  View Answer play_arrow

• question_answer173) Elbow joint is an example of
  A)
   pivot joint                         
  done clear
  B)
   hinge joint
  done clear
  C)
   gliding joint                       
  done clear
  D)
   ball and socket joint
  done clear
  View Answer play_arrow

• question_answer174) Uric acid is the chief nitrogenous component of the excretory products of
  A)
   man                                     
  done clear
  B)
   earthworm
  done clear
  C)
   cockroach                          
  done clear
  D)
   frog
  done clear
  View Answer play_arrow

• question_answer175) Enzymes enhance the rate of a reaction by
  A)
  lowering the activation energy of the reaction
  done clear
  B)
  combining with the product as soon as it is formed
  done clear
  C)
   forming a reactant-product complex
  done clear
  D)
  changing the equilibrium point of the reaction
  done clear
  View Answer play_arrow

• question_answer176) During organ differentiation in Drosophila, an organ is modified to another organ (such as wings may be replaced by legs). Genes responsible for such metamorphosis are called
  A)
   double dominant genes
  done clear
  B)
   plastid genes
  done clear
  C)
   complementary genes
  done clear
  D)
   homeotic genes
  done clear
  View Answer play_arrow

• question_answer177) Which one pair of parents out of the following is most likely get a child who would suffer from hemolytic disease of the new-born?
  A)
  Rr+ mother and Rh‑ father
  done clear
  B)
   Rh- mother and Rh- father
  done clear
  C)
   Rh- mother and Rh+ father
  done clear
  D)
   Rh- mother and Rh+ father
  done clear
  View Answer play_arrow

• question_answer178) Drosophila flies with XXY genotype are females, but human beings with such genotype are abnormal males. It shows that
  A)
  Y-chromosome is essential for sex determination in Drosophila
  done clear
  B)
   Y-chromosome is female determinating in Drosophila
  done clear
  C)
   Y-chromosome is male determining in human beings
  done clear
  D)
   Y-chromosome has no role in sex determination either in Drosophila or in human beings
  done clear
  View Answer play_arrow

• question_answer179) A common scent-producing gland among mammals is
  A)
   anal gland                          
  done clear
  B)
   prostate gland
  done clear
  C)
   adrenal gland                   
  done clear
  D)
   Bartholins gland
  done clear
  View Answer play_arrow

• question_answer180) Pulmonary   artery   is   different   from pulmonary vein because it has
  A)
   larger lumen                    
  done clear
  B)
   thick muscular walls
  done clear
  C)
   no endothelium
  done clear
  D)
   valves
  done clear
  View Answer play_arrow