KVPY Sample Paper

done KVPY Stream-SX Model Paper-7 Total Questions - 120    [Download]

• question_answer1)
  An unbiased coin is tossed. If the outcome is a head then a pair of unbiased dice is rolled and the sum of obtained on this is noted. If the toss of the Coin resluts in tail in tail then a card from a well-shuffled cards numbered 1, 2, 3, ..., 9 is randomly the number on the card is noted. The that the noted number is either 7 or 8 is:
  A)
  \[\frac{13}{36}\]                                   
  done clear
  B)
   \[\frac{15}{72}\]
  done clear
  C)
  \[\frac{19}{72}\]                       
  done clear
  D)
         \[\frac{19}{36}\]
  done clear
  View Answer play_arrow

• question_answer2)
  The shortest distance between the point \[\left( \frac{3}{2},0 \right)\] and the curve \[y=\sqrt{x},(x>0),\]is:
  A)
  \[\frac{\sqrt{5}}{2}\]                             
  done clear
  B)
   \[\frac{\sqrt{3}}{2}\]
  done clear
  C)
  \[\frac{3}{2}\]              
  done clear
  D)
         \[\frac{5}{4}\]
  done clear
  View Answer play_arrow

• question_answer3)
  The Plane passing through the point \[(4,\,-1,\,\,2)\] and parallel to the lines \[\frac{x+2}{3}=\frac{y-2}{-1}=\frac{z+1}{2}\] and  \[\frac{x-2}{1}=\frac{y-3}{2}=\frac{z-4}{3}\] also passes through the point:
  A)
  \[(1,\,1<-1)\]                 
  done clear
  B)
   (1, 1, 1)
  done clear
  C)
  \[(-1,-1,-1)\]                   
  done clear
  D)
  \[(-1,-1,1)\]
  done clear
  View Answer play_arrow

• question_answer4)
    The mean of five observations is 5 and their variance is 9.20 three of the given five observations are then a ratio of other two observations is:
  A)
  \[10:3\]             
  done clear
  B)
   4 : 9
  done clear
  C)
   5 :  8               
  done clear
  D)
  6 : 7
  done clear
  View Answer play_arrow

• question_answer5)
  If 5, 5r, \[5{{r}^{2}}\]are the lengths of the sides of a triangle, be equal to:
  A)
  \[\frac{3}{4}\]                          
  done clear
  B)
   \[\frac{5}{4}\]
  done clear
  C)
  \[\frac{7}{4}\]              
  done clear
  D)
  \[\frac{3}{2}\]
  done clear
  View Answer play_arrow

• question_answer6)
  \[If{{\sum\limits_{i\,=\,1}^{20}{\left( \frac{{}^{20}{{C}_{i-1}}}{{}^{20}{{C}_{i}}+{}^{20}{{C}_{i\,-1}}} \right)}}^{3}}=\frac{k}{21},\]then k equals:
  A)
  400                              
  done clear
  B)
   50
  done clear
  C)
  200                              
  done clear
  D)
  100
  done clear
  View Answer play_arrow

• question_answer7)
  The sum of all values of \[\theta \in \left( 0,\frac{\pi }{2} \right)\] satisfying \[{{\sin }^{2}}2\theta +{{\cos }^{4}}2\theta =\frac{3}{4}\] is:
  A)
  \[\pi \]                           
  done clear
  B)
   \[\frac{5\pi }{4}\]
  done clear
  C)
  \[\frac{\pi }{2}\]            
  done clear
  D)
  \[\frac{3\pi }{8}\]
  done clear
  View Answer play_arrow

• question_answer8)
  Consider the quadratic equation \[(c-5){{x}^{2}}-2cs+(c-4)=0,\] \[c\,\ne \,5.\] Let S be the set of all integral values of g for which one root of the equation lies in the interval (0, 2) and its other root lies in the interval (2, 3). Then the number of elements in S is:
  A)
  18                                
  done clear
  B)
   12
  done clear
  C)
  10                                
  done clear
  D)
  11
  done clear
  View Answer play_arrow

• question_answer9)
  If \[\frac{dy}{dx}+\frac{3}{{{\cos }^{2}}x}y=\frac{1}{{{\cos }^{2}}x},\] \[x\in \left( \frac{-\pi }{3},\frac{\pi }{3} \right)\] and \[y\left( \frac{\pi }{4} \right)=\frac{4}{3},\] then \[y\left( -\frac{\pi }{4} \right)\] equals:
  A)
  \[\frac{1}{3}+{{e}^{6}}\]                   
  done clear
  B)
   \[\frac{1}{3}\]
  done clear
  C)
  \[-\frac{4}{3}\]                         
  done clear
  D)
  \[\frac{1}{3}+{{e}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer10)
  In a class of 140 students numbered 1 to 140, all even numbered students opted Mathematics course, those whose number is divisible by 3 opted Physics course and those whose number is divisible by 5 opted Chemistry course. Then the number of students who did not opt for any of the three courses is:
  A)
  102                              
  done clear
  B)
   42
  done clear
  C)
  1                                 
  done clear
  D)
  38
  done clear
  View Answer play_arrow

• question_answer11)
  If the third term in the binomial expansion of \[{{\left( 1+{{x}^{{{\log }_{2}}x}} \right)}^{5}}\]equals 2560, then a possible value  x is:
  A)
  \[\frac{1}{4}\]
  done clear
  B)
                                  \[4\sqrt{2}\]
  done clear
  C)
  \[\frac{1}{8}\]                          
  done clear
  D)
  \[2\sqrt{2}\]
  done clear
  View Answer play_arrow

• question_answer12)
  If the parabolas \[{{y}^{2}}=4b(x-c)\] and  \[{{y}^{2}}=8ax\] have a common normal, then which one of the following is a valid choice for the ordered triad (a, b, c)?
  A)
  \[\left( \frac{1}{2},2,3 \right)\]
  done clear
  B)
   (1, 1, 3)
  done clear
  C)
  \[\left( \frac{1}{2},2,0 \right)\]                 
  done clear
  D)
  (1, 1, 0)
  done clear
  View Answer play_arrow

• question_answer13)

  If the system of equations

  x + y + z = 5

  x + 2y + 3z = 9

  \[x+3y+az=\beta \]

  has infinitely many solutions, then p - a equals:

  A)
  21                                
  done clear
  B)
   8
  done clear
  C)
  18                                
  done clear
  D)
  5
  done clear
  View Answer play_arrow

• question_answer14)
  For each\[t\in R,\]let \[[t]\] be the greatest integer less than or equal to \[t.\] Then, \[\underset{x\to 1+}{\mathop{\lim }}\,\frac{(1-|x|+\sin |1-x|)sin\left( \frac{\pi }{2}[1-x] \right)}{|1-x\left\| 1-x \right.|}\]
  A)
  equals 1            
  done clear
  B)
   equals 0
  done clear
  C)
  equals\[-1\]                    
  done clear
  D)
  does not exist
  done clear
  View Answer play_arrow

• question_answer15)
    Let de\[d\in R,\] and  \[A=\left[ \begin{matrix}    -2 & 4+d & (sin\theta )-2  \\    1 & (sin\theta )+2 & d  \\    5 & (2sin\theta )-d & (-sin\theta )+2+2d  \\ \end{matrix} \right],\] \[\theta \in [0,2\pi ].\] If the minimum value of det [A is 8. then   a value of d is:
  A)
  \[-5\]                
  done clear
  B)
   \[-7\]
  done clear
  C)
  \[2\left( \sqrt{2}+1 \right)\]                     
  done clear
  D)
  \[2\left( \sqrt{2}+2 \right)\]
  done clear
  View Answer play_arrow

• question_answer16)
  Let \[{{z}_{1}}\] and \[{{z}_{2}}\] be any two non-zero complex numbers such that \[3\left| {{z}_{1}} \right|=4\left| {{z}_{2}} \right|.\]If \[z=\frac{3{{z}_{1}}}{2{{z}_{2}}}+\frac{2{{z}_{2}}}{3{{z}_{1}}}\] then:
  A)
  Re (z) = 0                     
  done clear
  B)
   \[\left| z \right|=\sqrt{\frac{5}{2}}\]
  done clear
  C)
  \[\left| z \right|=\frac{1}{2}\sqrt{\frac{17}{2}}\]             
  done clear
  D)
  None of these
  done clear
  View Answer play_arrow

• question_answer17)
  Let \[I=\int{_{a}^{b}({{x}^{4}}-2{{x}^{2}})dx.}\]If I is minimum then the ordered pair (a, b) is:
  A)
  \[\left( 0,\sqrt{2} \right)\]             
  done clear
  B)
   \[\left( -\sqrt{2},0 \right)\]
  done clear
  C)
  \[\left( \sqrt{2},-\sqrt{2} \right)\]              
  done clear
  D)
  \[\left( -\sqrt{2},-\sqrt{2} \right)\]
  done clear
  View Answer play_arrow

• question_answer18)
  A point P moves on the line \[2x-3y+4=0.\]If Q(1, 4) and \[R(3,-2)\]are fixed points, then the  of the centroid of \[\Delta PQR\] is a line:
  A)
  with slope \[\frac{3}{2}\]       
  done clear
  B)
   parallel to x-axis
  done clear
  C)
  with slope \[\frac{2}{3}\]     
  done clear
  D)
  parallel to y-axis
  done clear
  View Answer play_arrow

• question_answer19)
  Let \[f(x)=\left\{ \begin{matrix}    \max \left\{ \left| x \right|,{{x}^{2}} \right\} & \left| x \right|\le 2  \\    8-2\left| x \right| & 2<\left| x \right|\le 4  \\ \end{matrix}. \right.\] Let S be the set of points in the interval \[(-4,4)\] at which differentiable. Then S:
  A)
  is an empty set  
  done clear
  B)
   equals \[\left\{ -2,-1,\,\,1,\,\,2 \right\}\]
  done clear
  C)
  equals \[\left\{ -2,-1,\,\,1,\,\,2 \right\}\]
  done clear
  D)
  equals \[\left\{ -2,\,\,2 \right\}\]
  done clear
  View Answer play_arrow

• question_answer20)
  If a circle C passing through the point (4, 0) touches the circle \[{{x}^{2}}+{{y}^{2}}+4x-6y=12\] externally at the point  \[(1,-1),\] then the radius of C is:
  A)
  \[2\sqrt{5}\]                  
  done clear
  B)
   4
  done clear
  C)
  5                     
  done clear
  D)
  \[\sqrt{57}\]
  done clear
  View Answer play_arrow

• question_answer21)
  A conductor is charged in a room, its potential varies with time (considering all practical factors) will be
  A)
  
  done clear
  B)
          
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer22)
  Which of these is a path for a long range projectile such as an intercontinental ballistic missile?
  A)
  Parabolic                      
  done clear
  B)
   Semi-circular
  done clear
  C)
  Elliptical           
  done clear
  D)
  Straight line
  done clear
  View Answer play_arrow

• question_answer23)
  Surface tension of a liquid at room temperature is \[6.99\times {{10}^{-2}}N{{m}^{-1}}\]. If vapour pressure of the liquid is \[2.33\times {{10}^{3}}\] Pa, then radius of smallest drop which can be formed without evaporating at room temperature is
  A)
  0.06 mm                      
  done clear
  B)
   0.4 mm
  done clear
  C)
  0.6 mm                        
  done clear
  D)
  0.32 mm
  done clear
  View Answer play_arrow

• question_answer24)
  A ball is dropped over an inclined plane of inclination \[45{}^\circ \] If the ball is dropped from a height of 5 m above the inclined plane and collision is elastic, then the length AB over the plane is \[(take,g=10ms)\]
  A)
  \[20\sqrt{2}m\]              
  done clear
  B)
   \[10\sqrt{2}m\]
  done clear
  C)
   \[5\sqrt{2}m\]              
  done clear
  D)
  \[15\sqrt{2}m\]
  done clear
  View Answer play_arrow

• question_answer25)
  Consider a uniform semi-circular wire of radius r Placed, such that its centre coincides of mass are best located in
  A)
     
  done clear
  B)
   
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer26)

  Two radio antennas separated by 300 m are simultaneously broadcasting signals of same wavelengths.

  A car is moving over a parallel path at a distance of 1000 m from line joining antennas as shown below.

  At 400 m from the centre line of antenna, a radio fitted in car registers a second minima. Wavelength of transmission is around

  A)
  110m
  done clear
  B)
                     45m
  done clear
  C)
  65 m                
  done clear
  D)
  55 m
  done clear
  View Answer play_arrow

• question_answer27)
  A Michelson interferometer invented to form an interference pattern by splitting a light beam into two parts and recombining them after both parts covers unequal distances. This interferometer is used in LIGO appratus. This appratus detects
  A)
  matter waves
  done clear
  B)
   electromagnetic waves of high frequencies
  done clear
  C)
  radio waves from distant galaxies
  done clear
  D)
  gravitational waves
  done clear
  View Answer play_arrow

• question_answer28)

  A capacitor is connected to a cell and after a long time, a dielectric slab is allowed to fall through the gap of capacitor plates without touching them.

  As slab passes through the gap needle of a sensitive galvanometer shows

  A)
  no deflection at all
  done clear
  B)
   deflection towards left hand side
  done clear
  C)
  deflection towards right hand side
  done clear
  D)
  initial left then towards right hand side deflrction
  done clear
  View Answer play_arrow

• question_answer29)

  A ball is rolled over a horizontal ground making an angle of \[45{}^\circ \] with a mirror wall in an art gallery

  If velocity of ball is \[1m{{s}^{-1}}\], then velocity of image of ball with respect to ball will be

  A)
  \[\sqrt{2}m{{s}^{-1}}\]           
  done clear
  B)
   \[\sqrt{3}m{{s}^{-1}}\]
  done clear
  C)
  \[\frac{1}{\sqrt{2}}m{{s}^{-1}}\]                    
  done clear
  D)
  \[\frac{1}{\sqrt{3}}m{{s}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer30)
  A thin rod of length I, coefficient of linear expansion \[\alpha \] is heated, so that its temperature changes by AT. Fractional increase in moment of inertia of rod about an axis perpendicular to its length and passing through one of its end is
  A)
  \[\alpha \,\Delta \,T\]                  
  done clear
  B)
   \[\frac{3}{2}\alpha \,\Delta T\]
  done clear
  C)
  \[\frac{2}{3}\alpha \,\Delta T\]               
  done clear
  D)
                                              \[\frac{4}{3}\alpha \,\Delta T\]
  done clear
  View Answer play_arrow

• question_answer31)
  A transverse propagating wave is described by \[y=A\sin 2\pi \left( Bt-\frac{x}{c} \right)\]. If maximum particle speed is exactly equal to wave speed, then value of \[\frac{C}{A}\] is
  A)
  \[\pi \]                           
  done clear
  B)
   \[2\pi \]
  done clear
  C)
  \[\frac{\pi }{2}\]                        
  done clear
  D)
  \[\frac{B}{2\pi }\]
  done clear
  View Answer play_arrow

• question_answer32)

  A sound source emitting sound with frequency \[{{f}_{0}}\] is moving towards a fixed wall. Now, consider three observers \[{{O}_{1}},{{O}_{2}}\]and \[{{O}_{3}}\]  as shown below.

  Ratio of frequencies observed by observers \[{{f}_{1}}  :{{f}_{2}}:{{f}_{3}}\] is (take, \[{{\upsilon }_{s}}=\] speed of source, \[\upsilon =\] speed of sound in air and assume that \[{{O}_{3}}\] receives only reflected sound and \[{{v}_{s}}=\frac{v}{2}\])

  A)
  \[1:2:3\]                        
  done clear
  B)
   \[6:3:2\]
  done clear
  C)
  \[3:2:1\]                        
  done clear
  D)
  \[2:6:9\]
  done clear
  View Answer play_arrow

• question_answer33)
  Choose the correct option.
  A)
  For opaque solids, \[Eg>1.8eV\]
  done clear
  B)
   For coloured solids, \[Eg>3.1eV\]
  done clear
  C)
  For transparent solids, \[Eg>3.1eV\]
  done clear
  D)
  For semi-conductors, \[Eg>5eV\]
  done clear
  View Answer play_arrow

• question_answer34)

  A block of wood is floating in water in a vessel. This vessel is kept in a moving lift.

  Portion of block inside water is let x.

  A)
  When lift is moving with a constant velocity then portion of block inside water is x
  done clear
  B)
   When lift is accelerating up then portion of block inside water is x
  done clear
  C)
  When lift is accelerating down then portion of block inside water is x
  done clear
  D)
  All of the above
  done clear
  View Answer play_arrow

• question_answer35)

  For a particle, potential energy U(x) varies with position x as shown below.

  In above figure, \[{{E}_{0}}\] is total energy of the particle.

  Velocity-position of the particle is

  A)
  
  done clear
  B)
   
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer36)

  A particle of mass m collides elastically with a rigid wall as shown below.

  If duration of collision is\[\Delta t\], then torque provided by the wall about origin is

  A)
  0                                 
  done clear
  B)
   \[\frac{mva}{\Delta t}\]
  done clear
  C)
  \[\frac{2mva}{\Delta t}\]
  done clear
  D)
  \[\frac{2mvb}{\Delta t}\]
  done clear
  View Answer play_arrow

• question_answer37)

  A billiard ball is stuck with a cue stick horizontally as shown below.                   '

  Now, choose the incorrect option.

  A)
  When \[h=\frac{R}{2}\], sphere spins anti-clockwise and looses energy by friction
  done clear
  B)
   When \[h=R,\]sphere translates without rotation and looses energy by friction
  done clear
  C)
  When \[h=\frac{3R}{2}\], sphere rolls without and slip and no loss of energy
  done clear
  D)
  When \[h=\frac{7R}{2}\], sphere rolls perfectly over the surface
  done clear
  View Answer play_arrow

• question_answer38)

  Velocity-time graph for a moving object is as shown below.

  Its acceleration time is

  A)
  
  done clear
  B)
   
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer39)
  Your mobile phone is operating in which of these frequency bands?
  A)
  380 to 1900 MHz           
  done clear
  B)
   30 to 40 MHz
  done clear
  C)
  Less than 30 MHz          
  done clear
  D)
  30 to 300 GHz
  done clear
  View Answer play_arrow

• question_answer40)
  Let a radioactive sample undergoes \[\alpha \], \[\beta \] and \[\gamma \]decays (not necessarily in any particular order), then correct order of half-lives of these decays is
  A)
  \[\alpha >\beta >\gamma \]       
  done clear
  B)
          \[\gamma >\beta >\alpha \]
  done clear
  C)
  \[\beta >\alpha >\gamma \]       
  done clear
  D)
         not following any order
  done clear
  View Answer play_arrow

• question_answer41)

  \[{{S}_{1}}\]: Potential energy of the two opposite charge system increases with the decrease in distance.

  \[{{S}_{2}}\]: When an electron make transition from higher orbit to lower orbit it's kinetic energy increases.

  \[{{S}_{3}}\]: When an electron make transition from lower energy to higher energy state its potential energy increases.

  \[{{S}_{4}}\]: 11eV photon can free an electron from the 1st excited state of \[H{{e}^{+}}\]- ion.

  A)
  TTTT                           
  done clear
  B)
   FTTF    
  done clear
  C)
  TFFT                            
  done clear
  D)
  FFFF
  done clear
  View Answer play_arrow

• question_answer42)
  Assuming that \[{{O}_{2}}\] molecule is spherical in shape with radius \[2\overset{o}{\mathop{A}}\,\], the percentage of the volume of \[{{O}_{2}}\] molecules to the total volume of gas at S.T.P. is:
  A)
  0.09 %             
  done clear
  B)
   0.9 %            
  done clear
  C)
  0.009 %          
  done clear
  D)
  0.045 %
  done clear
  View Answer play_arrow

• question_answer43)
  If 2-Chloropentane is further monochlorinated with \[C{{l}_{2}}\] in presence of diffused sunlight, how many isomers of dichloro-pentane are formed?
  A)
  12                                
  done clear
  B)
   5                
  done clear
  C)
  4                                 
  done clear
  D)
  8
  done clear
  View Answer play_arrow

• question_answer44)
  If a certain mass of ideal gas is made to undergo separately adiabatic and isothermal expansions reversibly to the same pressure, starting from the same initial conditions of temperature and pressure, then as compared to that of isothermal expansion, in the case of adiabatic expansion, the final:
  A)
  volume and temperature will be higher
  done clear
  B)
   volume and temperature will be lower
  done clear
  C)
  temperature will be lower but the final volume will be higher
  done clear
  D)
  volume will be lower but the final temperature will be higher
  done clear
  View Answer play_arrow

• question_answer45)
  In a closed container He, \[{{O}_{2}}\] and \[{{O}_{3}}\] gases are placed in 1:2:3 weight ratio at constant temperature. Then find the correct statement (s):
  A)
  The ratio of their partial pressure is 1:2:3
  done clear
  B)
   The ratio of their mole fraction is 1:2:3
  done clear
  C)
  The ratio of their partial pressure is 6:1:1
  done clear
  D)
  Total pressure inside the container does not depend upon the nature of the gas
  done clear
  View Answer play_arrow

• question_answer46)

  Determine pH of a 0.01 M aqueous solution of \[Cl{{C}_{6}}{{H}_{4}}N{{H}_{3}}Cl\].

  \[[{{K}_{b}}(Cl{{C}_{6}}{{H}_{4}}N{{H}_{3}})=4\times {{10}^{-13}}\],  \[\log 19=1.3,\,\,log2=0.3,\,\,\sqrt{16.25}=4.02]\]

  A)
  2.1                               
  done clear
  B)
   2.5              
  done clear
  C)
  3.5                               
  done clear
  D)
  3.1
  done clear
  View Answer play_arrow

• question_answer47)
  How many chiral centers does cholesterol have?
  A)
  10                                
  done clear
  B)
   9
  done clear
  C)
                  8                     
  done clear
  D)
  7
  done clear
  View Answer play_arrow

• question_answer48)
  Which of the following is true statement?
  A)
  All the carbon in \[{{H}_{2}}C=\underset{\underset{H}{\mathop{|}}\,}{\mathop{C}}\,-C\equiv C-\underset{\underset{H}{\mathop{|}}\,}{\mathop{C}}\,=C{{H}_{2}}\] are in \[s{{p}^{2}}\] hybridisation.
  done clear
  B)
   In \[{{C}_{2}}{{H}_{2}}{{(CN)}_{2}}\] there are six \['\sigma '\] bonds.
  done clear
  C)
  In diamond 'C' is in \[s{{p}^{2}}\] hybridisation.
  done clear
  D)
  In \[{{C}_{3}}{{O}_{2}}\] ail the carbons are in sp hybridisation.
  done clear
  View Answer play_arrow

• question_answer49)
  'X' react with dil \[{{H}_{2}}S{{O}_{4}}\] to give ?Y? gas for a moment and then the reaction stows down due to the formation of 'Z'; X, Y & Z can be
  A)
  \[CuS{{O}_{4}},S{{O}_{2}},C{{u}_{2}}O\]
  done clear
  B)
   \[N{{a}_{2}}{{C}_{2}}{{O}_{4}},CO,C{{O}_{2}}\]
  done clear
  C)
  \[PbC{{O}_{3}},C{{O}_{2}},PbS{{O}_{4}}\]
  done clear
  D)
  \[CaC{{O}_{3}},C{{O}_{2}},CaS{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer50)
  \[PbS\xrightarrow[\Delta ]{air}X,\,\,X+PbS\xrightarrow[{}]{{}}Pb+S{{O}_{2}}\]
  A)
  \[PbO\]             
  done clear
  B)
   \[Pb{{O}_{2}}\]
  done clear
  C)
  \[PbO\,\,and\,\,PbS{{O}_{4}}\] 
  done clear
  D)
  \[Pb{{O}_{2}}\,and\,PbO\]
  done clear
  View Answer play_arrow

• question_answer51)

  Which of the following reactions will evolve CO(g).

  (i) \[{{K}_{4}}Fe{{(CN)}_{6}}+Conc.\,\,{{H}_{2}}S{{O}_{4}}\xrightarrow[{}]{\Delta }\]

  (ii) \[Ni{{(CO)}_{4}}\xrightarrow[{}]{\Delta }\]

  (iii) \[Zn+C{{O}_{2}}\xrightarrow[{}]{\Delta }\]

  (iv) \[MgC{{O}_{3}}+Zn\xrightarrow[{}]{\Delta }\]

  A)
  All the above
  done clear
  B)
   One (i)
  done clear
  C)
  (i) & (ii)            
  done clear
  D)
  none of these  
  done clear
  View Answer play_arrow

• question_answer52)

  \[{{S}_{1}}\]: In organometallic compounds, carbon must be bonded to metal/metalloids directly.

  \[{{S}_{2}}\]: Complexes having \[d{}^\circ \] or \[{{d}^{10}}\] configuration of metal ion are always diamagnetic.

  \[{{S}_{3}}\]: Extra stability of metal carbonyls is explained by synergic bonding.

  \[{{S}_{4}}\]: In \[Fe{{(CO)}_{5}}\] the Fe-C bond possess both \[\sigma \] and \[\pi \] characters.

  A)
  TTTT                           
  done clear
  B)
   TTFF         
  done clear
  C)
  FTFT                            
  done clear
  D)
  FTTT
  done clear
  View Answer play_arrow

• question_answer53)

  \[{{S}_{1}}\]: Always all canonical forms do not contribute equally to the resonance hybrid.

  \[{{S}_{2}}\]: In ethanamine and ethenamine nitrogen is \[s{{p}^{3}}\] hybridised.

  \[{{S}_{3}}\]: All 'C-O' bond length in carbonate dianion are equal.

  \[{{S}_{4}}\]: \[C{{H}_{2}}=C=O\]does not exhibit resonance because it is not a conjugated system.

  A)
  TFTF                            
  done clear
  B)
   TTFT          
  done clear
  C)
  FFTT                            
  done clear
  D)
  TFTT
  done clear
  View Answer play_arrow

• question_answer54)
  The correct acidic strength order is
  A)
  \[X>Z>W>Y\]              
  done clear
  B)
   \[Z>X>Y>W\]
  done clear
  C)
  \[W>Z>X>Y\]              
  done clear
  D)
  \[X>Z>Y>W\]
  done clear
  View Answer play_arrow

• question_answer55)
  Which of the following alcohols would you expect to form a carbocation most readily In sulphuric acid
  A)
                      
  done clear
  B)
   
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer56)
  The conversion of ethanol to propionitrile (propanenitrile) is best done by
  A)
  \[C{{H}_{3}}C{{H}_{2}}OH+C{{H}_{3}}CN\xrightarrow[{}]{\Delta }\]
  done clear
  B)
   \[C{{H}_{3}}C{{H}_{2}}OH+KCN\xrightarrow[{}]{\Delta }\]
  done clear
  C)
  \[C{{H}_{3}}C{{H}_{2}}OH+HCN\xrightarrow[{}]{\Delta }\]
  done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}OH\xrightarrow[Pyridine]{TsCl}\xrightarrow[{}]{KCN}\]
  done clear
  View Answer play_arrow

• question_answer57)
  An amino acid migrates at anode at
  A)
  \[pH>pI\]
  done clear
  B)
   \[pH<pI\]
  done clear
  C)
  \[pH=pI\]
  done clear
  D)
  done clear
  View Answer play_arrow

• question_answer58)
  It depends an structure of amino acid
  A)
  \[LiAl{{H}_{4}}/ether/{{H}_{2}}O\]
  done clear
  B)
   \[NaB{{H}_{4}}/{{C}_{2}}{{H}_{5}}OH\]
  done clear
  C)
  \[DIBAL-H\]
  done clear
  D)
  \[Na/{{C}_{2}}{{H}_{5}}OH\]
  done clear
  View Answer play_arrow

• question_answer59)
  Which of the following has least stable enol form:
  A)
             
  done clear
  B)
   
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer60)
  Among Na, Hg, S, Ft and graphite, which can be used as electrodes in electrolytic cells having aqueous solutions -
  A)
  Hg and Pt        
  done clear
  B)
  Hg, Pt and graphite
  done clear
  C)
  Na, S               
  done clear
  D)
  Na, Hg, S
  done clear
  View Answer play_arrow

• question_answer61)
  L-shaped proposed by & Kim & Kling for explaining the structure of -
  A)
  r-RNA               
  done clear
  B)
   t-RNA
  done clear
  C)
  m-RNA             
  done clear
  D)
  Sn-RNA
  done clear
  View Answer play_arrow

• question_answer62)
  A rosette habit of cabbage, henbane can be converted in to vine habit by the application of -
  A)
  Cytokinin                      
  done clear
  B)
   NAA
  done clear
  C)
  \[G{{A}_{3}}\]                        
  done clear
  D)
  IBA
  done clear
  View Answer play_arrow

• question_answer63)
  In which of cell cycle syneptonemal complex becomes dissolved.
  A)
  Pachytene                     
  done clear
  B)
   Diakinesis
  done clear
  C)
  Diplotene                      
  done clear
  D)
  Metaphase-I
  done clear
  View Answer play_arrow

• question_answer64)
  Deletion or insertion of one or two bases cause mutation in DNA that is called -
  A)
  Non-sence mutation
  done clear
  B)
   Silent mutation
  done clear
  C)
  Frame shift mutation
  done clear
  D)
  Mis sence mutation
  done clear
  View Answer play_arrow

• question_answer65)
  The percentage of PAR that is used in photosynthesis by autotrophs -
  A)
  1 - 5%              
  done clear
  B)
   2 - 10%
  done clear
  C)
  50%                             
  done clear
  D)
  20%
  done clear
  View Answer play_arrow

• question_answer66)
  The function of leaf is performed by petiole in Australian acacia. This modification is called -
  A)
  Phylloclade                   
  done clear
  B)
   Cladode
  done clear
  C)
  Phyllode                       
  done clear
  D)
  Staminode
  done clear
  View Answer play_arrow

• question_answer67)
  Bell shaped pyramid of human population indicates that the population is -
  A)
  Expanding                    
  done clear
  B)
   Stable
  done clear
  C)
  Declining                       
  done clear
  D)
  None of these
  done clear
  View Answer play_arrow

• question_answer68)
  Which of the following help in absorption of phosphates for plants -
  A)
  Ectomycorrhiza  
  done clear
  B)
   Lichen
  done clear
  C)
  Glomus            
  done clear
  D)
  Earthworm
  done clear
  View Answer play_arrow

• question_answer69)
  In lac operon, the inducer is -
  A)
  Galactose                     
  done clear
  B)
   Glucose
  done clear
  C)
  Lactose            
  done clear
  D)
  Permase
  done clear
  View Answer play_arrow

• question_answer70)
  The deficiency of which element affect the nitrogen fixation -
  A)
  Mo                   
  done clear
  B)
   \[Ca\]
  done clear
  C)
  \[{{K}^{+}}\]                         
  done clear
  D)
  \[M{{n}^{++}}\]
  done clear
  View Answer play_arrow

• question_answer71)
  The length of the alimentary canal is more in herbivorous animals than the carnivorous because -
  A)
  Herbivorous diet contains more fat to digest
  done clear
  B)
   Herbivorous diet contains more proteins to digest
  done clear
  C)
  Herbivorous diet contains more carbohydrates particularly cellulose which takes more item to digest
  done clear
  D)
  Herbivorous diet contains more vitamins to digest
  done clear
  View Answer play_arrow

• question_answer72)
  Lining of trachea is made of -
  A)
  Simple squamous epithelium
  done clear
  B)
   Simple cuboidal epithelium
  done clear
  C)
  Pseudo stratified epithelium
  done clear
  D)
  Stratified cuboidal epithelium
  done clear
  View Answer play_arrow

• question_answer73)
  ?Heart of Heart' is -
  A)
  SA node                       
  done clear
  B)
   AV node
  done clear
  C)
  Bundle of His    
  done clear
  D)
  Pukinje fibres
  done clear
  View Answer play_arrow

• question_answer74)
  Effect of thyroxin on B.M.R. is -
  A)
  Increase            
  done clear
  B)
   decrease
  done clear
  C)
  Uncertain                      
  done clear
  D)
  no effect
  done clear
  View Answer play_arrow

• question_answer75)
  In cataract -
  A)
  Due to ageing or some infection eye lens becomes opaque
  done clear
  B)
   Elasticity of eye lens is lost
  done clear
  C)
  There is irregular curvature of lens
  done clear
  D)
  Eye ball becomes shorter
  done clear
  View Answer play_arrow

• question_answer76)
  Under normal conditions which one is completely in the renal tubule?
  A)
  Urea                             
  done clear
  B)
   Uric acid
  done clear
  C)
  Salts                            
  done clear
  D)
  Glucose
  done clear
  View Answer play_arrow

• question_answer77)
  The pelvic girdle, the acetabulum in man is formed by -
  A)
  Ileum, ischium and pubis
  done clear
  B)
   Ileum, ischium and cotyloid
  done clear
  C)
  Ileum and ischium
  done clear
  D)
  Ileum and cotyloid
  done clear
  View Answer play_arrow

• question_answer78)
  Spermiogenesis changes -
  A)
  Spermatogonium to primary spermatocyte
  done clear
  B)
   Primary spermatocyte to secondary spermatocyte
  done clear
  C)
  Secondary spermatocyte to spermatid
  done clear
  D)
  Spermatid to sperm
  done clear
  View Answer play_arrow

• question_answer79)
  What is correct formulation Hardy Weinberg law?
  A)
  \[{{p}^{2}}+2pq+{{q}^{2}}=1\]     
  done clear
  B)
   \[{{p}^{2}}+pq+{{q}^{2}}=1\]
  done clear
  C)
  \[{{p}^{2}}+2pq+{{q}^{2}}=0\]     
  done clear
  D)
  \[{{p}^{2}}+pq+{{q}^{2}}=0\]
  done clear
  View Answer play_arrow

• question_answer80)
  dB is a standard abbreviation used for the quantitative expression of -
  A)
  A particular pollutant
  done clear
  B)
   The dominant Bacillus in a culture
  done clear
  C)
  A certain pesticide
  done clear
  D)
  The density of bacteria in a medium
  done clear
  View Answer play_arrow

• question_answer81)
  Let \[f\,:\,R\to R\]  be a function such that \[f\,(x)={{x}^{3}}+{{x}^{2}}f'(1)+xf''(2)+f''(3),\]\[x\,\in R.\] Then f(2) equals:
  A)
  \[-4\]
  done clear
  B)
   30
  done clear
  C)
  \[-2\]                
  done clear
  D)
  8
  done clear
  View Answer play_arrow

• question_answer82)
  Let \[\vec{a}=2\hat{i}+{{\lambda }_{1}}\hat{j}+3\hat{k},\] \[\hat{b}=4\hat{i}+(3-{{\lambda }_{2}})\hat{j}+6\hat{k}\]  and \[\vec{c}=3\hat{i}+6\hat{j}+({{\lambda }_{3}}-1)\hat{K}\] be three vectors such that \[\vec{b}=2\vec{a}\] and \[\vec{a}\] is perpendicular to \[\vec{c}.\] Then a possible value of \[({{\lambda }_{1}},{{\lambda }_{2}},{{\lambda }_{3}})\] is:
  A)
  (1, 3, 1)            
  done clear
  B)
  \[\left( -\frac{1}{2},4,0 \right)\]
  done clear
  C)
  \[\left( \frac{1}{2},4-2 \right)\]                 
  done clear
  D)
  (1, 5, 1)
  done clear
  View Answer play_arrow

• question_answer83)
  Let A be a point on the line \[\vec{r}=(1-3\mu )\hat{i}+(\mu -1)\hat{j}+(2+5\mu )\hat{k}\] and B (3, 2,6) be a point in the space. Then the value of \[\mu \] for which the vector \[\overset{\xrightarrow{{}}}{\mathop{AB}}\,\] is parallel to the plane \[x-4y+3z=1\] is:
  A)
  \[\frac{1}{4}\]                          
  done clear
  B)
   \[\frac{1}{8}\]
  done clear
  C)
  \[\frac{1}{2}\]                          
  done clear
  D)
  \[-\frac{1}{4}\]
  done clear
  View Answer play_arrow

• question_answer84)
  Let \[n\ge 2\] be a natural number and \[0<\theta <\pi \text{/2}.\] Then \[\int{\frac{{{\left( {{\sin }^{n}}\theta -\sin \theta  \right)}^{\frac{1}{n}}}\cos \theta }{{{\sin }^{n+1}}\theta }d\theta }\] is equal to: (where C is a constant of integration)
  A)
  \[\frac{n}{{{n}^{2}}-1}{{\left( 1-\frac{1}{{{\sin }^{n-1}}\theta } \right)}^{\frac{n+1}{n}}}+C\]
  done clear
  B)
   \[\frac{n}{{{n}^{2}}+1}{{\left( 1-\frac{1}{{{\sin }^{n-1}}\theta } \right)}^{\frac{n+1}{n}}}+C\]
  done clear
  C)
  \[\frac{n}{{{n}^{2}}-1}{{\left( 1+\frac{1}{{{\sin }^{n-1}}\theta } \right)}^{\frac{n+1}{n}}}+C\]
  done clear
  D)
  \[\frac{n}{{{n}^{2}}-1}{{\left( 1-\frac{1}{{{\sin }^{n+1}}\theta } \right)}^{\frac{n+1}{n}}}+C\]
  done clear
  View Answer play_arrow

• question_answer85)
  Consider a triangular plot ABC with sides AB = 7 m, BC = 5 m and CA = 6 m. A vertical lamp-post at the mid-point D of AC subtends an angle \[30{}^\circ \] at B. The height (in m) of the lamp-post is:
  A)
  \[\frac{3}{2}\sqrt{21}\]             
  done clear
  B)
   \[\frac{2}{3}\sqrt{21}\]
  done clear
  C)
  \[2\sqrt{21}\]                
  done clear
  D)
  \[7\sqrt{21}\]
  done clear
  View Answer play_arrow

• question_answer86)
  The equation of a tangent to the hyperbola \[4{{x}^{2}}-5{{y}^{2}}=20\]  parallel to the line \[x-2y=2\]is:
  A)
  \[x-y+1=0\]                  
  done clear
  B)
   \[x-y+7=0\]
  done clear
  C)
  \[x-y+9=20\]    
  done clear
  D)
  \[x-y-3=0\]
  done clear
  View Answer play_arrow

• question_answer87)
  If the line \[3x+3y-24=0\] intersects the x-axis at point A and the y-axis at the point B, then the incentre of the triangle OAB, where O is the origin, is:
  A)
  (3, 4)                
  done clear
  B)
   (2, 2)
  done clear
  C)
  (4, 3)                
  done clear
  D)
  (4, 4)
  done clear
  View Answer play_arrow

• question_answer88)
  The sum all two digit positive numbers which when divided by 7 yield 2 or 5 as remainder is:
  A)
  1256                
  done clear
  B)
   1465
  done clear
  C)
  1365                
  done clear
  D)
  1356
  done clear
  View Answer play_arrow

• question_answer89)
  If the area enclosed between the curves \[y=k{{x}^{2}}\] and \[x=k{{y}^{2}},\] (k > 0) is 1 square unit. Then k is:
  A)
  \[\frac{\sqrt{3}}{2}\]                             
  done clear
  B)
   \[\frac{1}{\sqrt{3}}\]
  done clear
  C)
  \[\sqrt{3}\]                                
  done clear
  D)
  \[\frac{2}{\sqrt{3}}\]
  done clear
  View Answer play_arrow

• question_answer90)
  Consider the statement: \[''P(n):{{n}^{2}}-n+41\] is prime.?? Then which one of the following is true?
  A)
  Both P(3) and P(5) are true
  done clear
  B)
   P(3) is false but P(5) is true
  done clear
  C)
  Both P(3) and P(5) are false
  done clear
  D)
  P(5) is false but P(3) is true Physics
  done clear
  View Answer play_arrow

• question_answer91)
  A metal bar (length L, mass m) can slides over two connected rails fitted over an inclined plane without friction. Rails are of very less resistance and metal bar is of resistance R. When a magnetic field B is switch ON perpendicular to ground, then terminal speed of the metal bar obtained is
  A)
  \[\frac{Rmg}{{{B}^{2}}{{L}^{2}}}\]            
  done clear
  B)
   \[\frac{Rmg}{{{B}^{2}}{{L}^{2}}}.\sec \theta .\tan \theta \]
  done clear
  C)
  \[\frac{Rmg}{{{B}^{2}}{{L}^{2}}}.\tan \theta \]                    
  done clear
  D)
  \[\frac{Rmg}{{{B}^{2}}{{L}^{2}}}.cot\theta \]
  done clear
  View Answer play_arrow

• question_answer92)

  Two identical cylindrical rods of radii 10 cm each and refractive index \[\sqrt{3}\] rests over a flat horizontal plane mirror.

  A horizontal light ray is made incident over right side glass rod I, such that it leaves the rod at a height of 10 cm from the plane mirror. Final emergent ray is found leaving glass rod parallel to the mirror.

  Distance d between glass rods is nearly

  A)
  \[31.5\text{ }cm\]                      
  done clear
  B)
  \[32.5\text{ }cm\]
  done clear
  C)
  \[37.5\text{ }cm\]                      
  done clear
  D)
  \[38.5\text{ }cm\]
  done clear
  View Answer play_arrow

• question_answer93)
  \[\upsilon -x\] graph of an object is \[\alpha -x\] graph of body is
  A)
  
  done clear
  B)
   
  done clear
  C)
  
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer94)
  For a charged circular ring, maximum value of electrical potential is at
  A)
  A                                 
  done clear
  B)
   B    
  done clear
  C)
  C                                 
  done clear
  D)
  D
  done clear
  View Answer play_arrow

• question_answer95)

  Five identical rods are connected between two large reservoirs of temperatures \[100{}^\circ C\] and \[0{}^\circ C\]. Each rod has thermal conductivity k, length l, and area A.

  There is no heat transfer through sides of rods.

  Heat flow rate from reservoir A to B is

  A)
  \[\frac{100kA}{l}\]                    
  done clear
  B)
   \[\frac{100kA}{7l}\]
  done clear
  C)
  \[\frac{100kA}{3l}\]                  
  done clear
  D)
  \[\frac{100kA}{13l}\]
  done clear
  View Answer play_arrow

• question_answer96)

  A resistance R is measured using a voltmeter and an ammeter as shown below.

  Ammeter shows 2A and voltmeter shows 120V.

  Internal resistance of voltmeter is\[3000\Omega \]. Error in measurement of R compared to the reading taken with an ideal voltmeter will be

  A)
  \[3.2\Omega \]               
  done clear
  B)
   \[4.2\Omega \]   
  done clear
  C)
  \[1.2\Omega \]  
  done clear
  D)
  \[0.2\Omega \]
  done clear
  View Answer play_arrow

• question_answer97)
  A free neutron decays into a proton and an electron as, \[_{0}^{1}n\xrightarrow{{}}_{1}^{1}p+_{-1}^{0}e+v\] neutron-hydrogen atom mass difference is \[840\mu u\]. then the maximum possible kinetic energy of electron will be\[\left( 1u=932MeV \right)\]
  A)
  \[0.783MeV\]                 
  done clear
  B)
   \[0.840MeV\]
  done clear
  C)
  \[0.589MeV\]                 
  done clear
  D)
  \[0.687MeV\]
  done clear
  View Answer play_arrow

• question_answer98)

  A chord ACB, 5m long is attached at points A and B to the vertical walls 3 m apart.

  A pulley of negligible mass and negligible radius carries 200 N load is free to roll over chord without friction. Dimension x in figure, when pulley is in equilibrium is

  A)
  \[\frac{9}{8}m\]                        
  done clear
  B)
   \[\frac{7}{5}m\]
  done clear
  C)
  \[\frac{4}{3}m\]                        
  done clear
  D)
  \[\frac{3}{4}m\]
  done clear
  View Answer play_arrow

• question_answer99)

  A uniform solid sphere rolls up an inclined plane.

  Now, choose the correct option.

  A)
  \[h\propto \frac{1}{m}\]             
  done clear
  B)
   \[h\propto \frac{1}{\tan \theta }\]
  done clear
  C)
  \[h\propto {{v}^{2}}\]             
  done clear
  D)
  \[h\propto \frac{1}{{{r}^{2}}}\]
  done clear
  View Answer play_arrow

• question_answer100)
  Water is filled in a tank up to height h. Bulk modulus of water is B and its density at surface is\[{{\rho }_{0}}\]. Density at depth h is
  A)
  \[\frac{{{p}_{0}}}{\left( 1-{{\rho }_{0}}gh/B \right)}\]    
  done clear
  B)
   \[\frac{{{p}_{0}}}{\left( 1-B/{{\rho }_{0}}gh \right)}\]
  done clear
  C)
  \[{{p}_{0}}\left( 1-\frac{{{\rho }_{0}}gh}{B} \right)\]                 
  done clear
  D)
  \[{{\rho }_{0}}\left( 1-\frac{B}{{{p}_{0}}gh} \right)\]
  done clear
  View Answer play_arrow

• question_answer101)
  Equal moles of \[BaC{{l}_{2}}\] and \[Mg{{(Cl{{O}_{4}})}_{2}}\] are present in two different solutions. As increasingly different masses of \[{{K}_{2}}S{{O}_{4}}\] are added lo these solutions in two independent experiments, following graph is obtained. Which of the following can be concluded from this graph? (Ba=137, K=39, Mg=24.3, S=32, O=16, N=14, Cl=35.5)
  A)
  \[BaS{{O}_{4}}\]and\[MgS{{O}_{4}}\], are precipitated in (1) and (2)
  done clear
  B)
  \[BaS{{O}_{4}}\] and \[KCl{{O}_{4}}\], are precipitated in (1) and (2)
  done clear
  C)
  \[KCl{{O}_{4}}\] and \[KCl\] are precipitated In (1) and (2)
  done clear
  D)
  \[KCl\] and \[MgS{{O}_{4}}\]. are precipitated in (1) and (2)
  done clear
  View Answer play_arrow

• question_answer102)
  Which of the following statement is incorrect?
  A)
  From a mixed precipitate of \[AgCl\]and\[Agl\], ammonia solution dissolves only \[AgCl\]
  done clear
  B)
   Thio     urea test is given by \[N{{O}_{2}}^{-}\] and not by \[S{{O}_{3}}^{2-}\]
  done clear
  C)
  On boiling a solution having \[{{K}^{+}},C{{a}^{2+}}\] and \[HC{{O}_{3}}^{-}\] Ions we get a precipitate of \[CaC{{O}_{3}}\]
  done clear
  D)
  \[A{{g}_{2}}S{{O}_{3}}\] is Insoluble in dilute \[HN{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer103)
  A racemic acid \[C{{H}_{3}}CHClCOOH\] is allowed to react with (S)-2-methylbutan-1-ol to form ester \[C{{H}_{3}}CHCl-\underset{\underset{O}{\mathop{||}}\,}{\mathop{C}}\,-OC{{H}_{2}}CH(C{{H}_{3}})C{{H}_{2}}C{{H}_{3}}\] and the reaction mixture is carefully distilled. The correct statement about the mixture distillate is:
  A)
  two fractions each optically active are found 
  done clear
  B)
   two fractions each optically inactive are found
  done clear
  C)
  three fractions all optically active are found  
  done clear
  D)
  three fractions all optically inactive are found
  done clear
  View Answer play_arrow

• question_answer104)
  \[E_{F{{e}^{3+}}/F{{e}^{+2}}}^{0}=+0.77\,V;E_{F{{e}^{+3}}/Fe}^{0}=-0.036V\]. What is \[E_{Fe/F{{e}^{+2}}}^{0}\] and is \[F{{e}^{+2}}\] stable to disproportionation in aqueous solution under standard conditions
  A)
  +0.44 V, yes      
  done clear
  B)
   -0.44 V, No      
  done clear
  C)
  + 0.44 V, No                
  done clear
  D)
  - 0.44 V, yes
  done clear
  View Answer play_arrow

• question_answer105)
  The face diagonal length of f.c.c. cubic cell is \[660\sqrt{2}\text{ }pm\]. If the radius of the cation is 110 pm. the radius of the anion is
  A)
  249pm                         
  done clear
  B)
   220pm        
  done clear
  C)
  608pm                         
  done clear
  D)
  176pm
  done clear
  View Answer play_arrow

• question_answer106)
  Reaction \[A+B\to C+D\] follows rate law, \[r=k{{[A]}^{1/2}}{{[B]}^{1/2}}\] starting with 1 M of A and B each. What is the time taken for concentration of A become 0.1 M? Give \[k=2.303\times {{10}^{-2}}{{\sec }^{-1}}\].
  A)
  10 sec                          
  done clear
  B)
   100 sec         
  done clear
  C)
  1000 sec           
  done clear
  D)
  434 sec
  done clear
  View Answer play_arrow

• question_answer107)
  
  A)
  \[X\,\,is\,\,C{{H}_{3}}-\overset{\overset{O}{\mathop{||}}\,}{\mathop{C}}\,-O-{{C}_{2}}{{H}_{5}}\]
  done clear
  B)
   \[X\,;\,C{{H}_{3}}-C{{H}_{2}}-\overset{\overset{O}{\mathop{||}}\,}{\mathop{C}}\,-O-C{{H}_{3}}\]
  done clear
  C)
  \[X\,\,is\,\,C{{H}_{3}}COOH\]
  done clear
  D)
  \[Y\,\,is\,\,C{{H}_{3}}OH\]
  done clear
  View Answer play_arrow

• question_answer108)
   product (X) in this reaction is:
  A)
  
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer109)
   final product is
  A)
                      
  done clear
  B)
   
  done clear
  C)
                        
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer110)
  Match the following:

  	Column I		Column II
  [a]	\[[NiC{{l}_{2}}{{(PP{{h}_{3}})}_{2}}]\]	(P)	Paramagnetic with 1 unpaired electrons
  [b]	\[V{{(CO)}_{6}}\]	(Q)	Paramagnetic with 2 unpaired electrons
  [c]	\[{{[Cr{{(CN)}_{6}}]}^{4-}}\]	(R)	Paramagnetic with 3 unpaired electrons
  [d]	\[Ni{{(CO)}_{4}}\]	(S)	Diamagnetic

  A)
  \[a-Q,b-P,c-Q,d-S\]
  done clear
  B)
   \[a-Q,b-R,c-Q,d-S\]
  done clear
  C)
  \[a-Q,b-R,c-P,d-S\]
  done clear
  D)
  \[a-Q,b-R,c-S,d-P\]
  done clear
  View Answer play_arrow

• question_answer111)
  In dark cycle, one molecule of glucose formation needed -
  A)
  12 ATP and 12 NADPH
  done clear
  B)
   14 ATP and 12 NADPH
  done clear
  C)
  16 ATP and 12 NADPH
  done clear
  D)
  18 ATP and 12 NADPH
  done clear
  View Answer play_arrow

• question_answer112)
  Microsporangia  develops in to -
  A)
  Pollens             
  done clear
  B)
   Microgametes
  done clear
  C)
  Magagametes    
  done clear
  D)
  Pollen sacs
  done clear
  View Answer play_arrow

• question_answer113)
  The phenotypic ratio of a monohybrid cross in \[{{F}_{2}}\]-generatin is -
  A)
  3 : 1                             
  done clear
  B)
   1: 2 :1
  done clear
  C)
  2 : 1: 1             
  done clear
  D)
  9 : 3 : 3 :1
  done clear
  View Answer play_arrow

• question_answer114)
  The recessive genes located on X-chromosome in humans are always -
  A)
  Lethal
  done clear
  B)
   Sub-lethal
  done clear
  C)
  Expressed in males
  done clear
  D)
  Expressed in females
  done clear
  View Answer play_arrow

• question_answer115)
  Frameshift mutation and base pair substitution changes the -
  A)
  Nucleotide structure
  done clear
  B)
   Nucleotide sequence
  done clear
  C)
  Nucleoside sequence
  done clear
  D)
  Sugar phosphate sequence
  done clear
  View Answer play_arrow

• question_answer116)
  Turner's syndrome caused due to the absence of-
  A)
  One X-chromosome (44 with XO)
  done clear
  B)
   One Y-chromosome
  done clear
  C)
  One X and Y-chromosome
  done clear
  D)
  Two X-chromosomes
  done clear
  View Answer play_arrow

• question_answer117)
  Nucleoside is formed when the nitrogenous bases are linked to -
  A)
  Sugar               
  done clear
  B)
   Phosphate
  done clear
  C)
  Proteins            
  done clear
  D)
  Fats
  done clear
  View Answer play_arrow

• question_answer118)
  In bacteria, the transcription and translation takes place in the same compartment because there is -
  A)
  Separation of cytosol and nucleus
  done clear
  B)
   Separation of cytoplasmic organelies
  done clear
  C)
  Separation of cytosol and nucleus
  done clear
  D)
  Presence of nucleus
  done clear
  View Answer play_arrow

• question_answer119)
  In E. coli, hydrolysis of disaccharide, lactose into galactose and glucose is performed by -
  A)
  Permease                      
  done clear
  B)
   Catalase
  done clear
  C)
  \[\beta \]-galactosidase    
  done clear
  D)
  Transacylase
  done clear
  View Answer play_arrow

• question_answer120)
  Polymerase chain reaction employs -
  A)
  Primers and DNA ligase
  done clear
  B)
   DNA ligase only
  done clear
  C)
  DNA polymerase
  done clear
  D)
  Primer and DNA polymerase
  done clear
  View Answer play_arrow