Solved papers for DUMET Medical DUMET Medical Solved Paper-2008

done DUMET Medical Solved Paper-2008 Total Questions - 200

• question_answer1) A rod of length L and mass m is kept vertically on the ground. Its potential energy is
  A)
   \[mgL\]
  done clear
  B)
   \[mg\frac{L}{2}\]
  done clear
  C)
   \[mg\frac{L}{3}\]
  done clear
  D)
   \[mg\frac{L}{4}\]
  done clear
  View Answer play_arrow

• question_answer2) A satellite is put in an orbit at height \[h=R\]. What is change in potential energy?
  A)
   \[mgR\]
  done clear
  B)
   \[\frac{mgR}{2}\]
  done clear
  C)
   \[2mgR\]
  done clear
  D)
   \[\frac{3}{2}mgR\]
  done clear
  View Answer play_arrow

• question_answer3) A body is projected at an angle \[{{45}^{o}}\] with horizontal. If escape velocity when projected vertically up is 11.2 km/s, what is its new escape velocity when projected at the given angle?
  A)
   \[\frac{11.2}{\sqrt{2}}km/s\]      
  done clear
  B)
   \[11.2\sqrt{2}km/s\]
  done clear
  C)
   \[11.2\,km/s\]       
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer4)  If total energy of satellite is E, what is its potential energy?
  A)
   \[2E\]            
  done clear
  B)
   \[-2E\]
  done clear
  C)
   \[E\]               
  done clear
  D)
   \[-E\]
  done clear
  View Answer play_arrow

• question_answer5) If radius of earth is reduced
  A)
   tide duration is reduced
  done clear
  B)
   earth rotates slower
  done clear
  C)
   time period of earth decreases
  done clear
  D)
   duration of day increases
  done clear
  View Answer play_arrow

• question_answer6) Zener diode acts as
  A)
   voltage regulator in reverse biasing
  done clear
  B)
   voltage regulator in forward biasing
  done clear
  C)
   current regulator in reverse biasing
  done clear
  D)
   current regualtor in forward biasing
  done clear
  View Answer play_arrow

• question_answer7) What is \[\frac{e}{m}\] ratio of electron?  
  A)
   \[2.76\times {{10}^{10}}\]      
  done clear
  B)
   \[2.76\times {{10}^{11}}\]
  done clear
  C)
   \[1.76\times {{10}^{10}}\]      
  done clear
  D)
   \[1.76\times {{10}^{11}}\]
  done clear
  View Answer play_arrow

• question_answer8) What is charge on 90 kg of electrons?
  A)
   \[1.58\times {{10}^{13}}\]
  done clear
  B)
   \[2.23\times {{10}^{12}}\]
  done clear
  C)
   \[2.53\times {{10}^{12}}\]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer9) At what temperature iron becomes paramagnetic?
  A)
   \[{{200}^{o}}C\]          
  done clear
  B)
   \[{{400}^{o}}C\]
  done clear
  C)
   \[{{600}^{o}}C\]         
  done clear
  D)
   \[{{800}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer10) Sparkling of diamond is because of
  A)
   total internal reflection
  done clear
  B)
   refraction
  done clear
  C)
   diffraction
  done clear
  D)
   scattering
  done clear
  View Answer play_arrow

• question_answer11) Pressure variation in a mechanical wave depends upon as
  A)
   \[\propto \] intensity
  done clear
  B)
   independent of intensity
  done clear
  C)
  \[\propto \frac{\text{1}}{\text{intensity}}\]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer12) Earths magnetic field is
  A)
   \[{{10}^{-4}}T\]         
  done clear
  B)
   \[{{10}^{-5}}T\]
  done clear
  C)
   \[{{10}^{-6}}T\]          
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer13) If charge and distance between two charges are reduced to half. Force between them
  A)
   remains same
  done clear
  B)
   increases four times
  done clear
  C)
   reduce four times
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer14) Consider a vehicle going on a horizontal road towards east. Neglect any force by the air. The frictional force on the vehicle by the road
  A)
   is zero if the vehicle is moving with a uniform velocity
  done clear
  B)
   is towards east if the vehicle is accelerating
  done clear
  C)
   must be towards east
  done clear
  D)
   must be towards west
  done clear
  View Answer play_arrow

• question_answer15) Masses m and M on pulley move 0.6 m in 4 s. What is ratio of \[\frac{m}{M}\]?
  A)
   \[\frac{55}{57}\]
  done clear
  B)
   \[\frac{113}{117}\]
  done clear
  C)
   \[\frac{57}{55}\]
  done clear
  D)
   \[\frac{397}{403}\]
  done clear
  View Answer play_arrow

• question_answer16) Three rods of equal length of thermal conductivity K, 2K and 3K are symmetrically joined. If temperature of ends are \[{{0}^{o}}C,\,{{50}^{o}}C\]and \[{{100}^{o}}C\]respectively, what is the temperature of the junction?
  A)
   \[20{{\,}^{o}}C\]
  done clear
  B)
   \[\frac{100}{3}{}^{o}C\]
  done clear
  C)
   \[\frac{200}{3}{}^{o}C\]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer17) Frequency of cyclotron does not depend upon
  A)
   charge         
  done clear
  B)
   mass
  done clear
  C)
   Velocity        
  done clear
  D)
  \[\frac{q}{m}\]
  done clear
  View Answer play_arrow

• question_answer18) Number of beats between A and B is 5 and between B and C are 3. Beat frequency between A and C may be
  A)
   1               
  done clear
  B)
   2
  done clear
  C)
   8               
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer19) A gas at one atmosphere and having volum 100mL is mixed with another gas of equal moles at 0.5atm and having volume 50mL in flask of one litre. What is their final pressure?
  A)
   0.5atm         
  done clear
  B)
   1atm
  done clear
  C)
   0.75atm        
  done clear
  D)
   0.125atm
  done clear
  View Answer play_arrow

• question_answer20) A body cools from \[{{80}^{o}}C\] to \[{{64}^{o}}C\] in 5 min and same body cools from \[{{80}^{o}}C\] to \[{{52}^{o}}C\] in 10 min, what is the temperature of the surrounding?
  A)
   \[{{24}^{o}}C\]           
  done clear
  B)
   \[{{28}^{o}}C\]
  done clear
  C)
   \[{{22}^{o}}C\]             
  done clear
  D)
   \[{{25}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer21) Sky waves are reflected by
  A)
   statosphere     
  done clear
  B)
   mesosphere
  done clear
  C)
   ionosphere      
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer22) What is size of gold nuclei?
  A)
   \[3{{R}_{0}}\]           
  done clear
  B)
   \[4{{R}_{0}}\]
  done clear
  C)
   \[5{{R}_{0}}\]
  done clear
  D)
   \[5.8{{R}_{0}}\]
  done clear
  View Answer play_arrow

• question_answer23) In L-C-R resonant circuit what is the phase angle \[\phi \]?
  A)
   \[{{90}^{o}}\]             
  done clear
  B)
   \[{{180}^{o}}\]
  done clear
  C)
   \[{{0}^{o}}\]                
  done clear
  D)
   \[{{60}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer24) In R-C circuit \[\omega =100\,\,rad/s,\text{ }R=100\,\,\Omega \],\[\text{C}=20\,\,\mu F\] what is impedence?
  A)
   \[510\,\,\Omega \]
  done clear
  B)
   \[200\,\,\Omega \]
  done clear
  C)
   \[250\,\,\Omega \] 
  done clear
  D)
   \[300\,\,\Omega \]
  done clear
  View Answer play_arrow

• question_answer25) A body is moving forward and backward Change in frequency observed by the body of a source is 2%. What is velocity of the body? (speed of sound is 300 m/s)
  A)
   6 m/s          
  done clear
  B)
   2 m/s
  done clear
  C)
   2.5 m/s        
  done clear
  D)
   3 m/s
  done clear
  View Answer play_arrow

• question_answer26) A body is projected horizontally with velocity 196 m/s from height 400 m. What is the time to reach the ground?
  A)
   5 s             
  done clear
  B)
   9 s
  done clear
  C)
   15 s            
  done clear
  D)
   20 s
  done clear
  View Answer play_arrow

• question_answer27) Two spheres of unequal mass but same radius are released on inclined plane. They rolls down with slipping. Which one will reach the ground first?
  A)
   Lighter sphere
  done clear
  B)
   Heavier sphere
  done clear
  C)
   Both will reach at the same time
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer28) A cylinder is rolling down a inclined plane of inclination \[{{60}^{o}}\]. What is its acceleration?
  A)
   \[g/\sqrt{3}\]           
  done clear
  B)
   \[g/\sqrt{3}\]
  done clear
  C)
   \[\sqrt{\frac{2g}{3}}\]              
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer29) Lead is
  A)
   diamagnetic     
  done clear
  B)
   paramagnetic
  done clear
  C)
   ferromagnetic   
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer30) The magnetic moment of atomic neon is
  A)
   zero           
  done clear
  B)
   \[\mu B/2\]
  done clear
  C)
   \[\mu B\]            
  done clear
  D)
   \[3\mu B/2\]
  done clear
  View Answer play_arrow

• question_answer31) In a potentiometer, the null point is received at 7th wire. If now we have to change the null point at the 9th wire, what should we do?
  A)
   Attach resistance in series with battery
  done clear
  B)
   Increse resistance in main circuit
  done clear
  C)
   Decrease resistance in main circuit
  done clear
  D)
   Decrease applied emf
  done clear
  View Answer play_arrow

• question_answer32) Water falls from height 100 m. Temperature of water
  A)
   increases       
  done clear
  B)
   decreases
  done clear
  C)
   remains same   
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer33) Two identical concentric rings each of mass m and radius R are placed perpendicularly. What is the moment of inertia about axis of one of the rings?
  A)
   \[\frac{3}{2}M{{R}^{2}}\]        
  done clear
  B)
   \[2M{{R}^{2}}\]
  done clear
  C)
   \[3M{{R}^{2}}\]       
  done clear
  D)
   \[\frac{1}{4}M{{R}^{2}}\]
  done clear
  View Answer play_arrow

• question_answer34) A motor of power 60 W draws current 5 A from a source of 15 V. What is loss of power?
  A)
   SOW          
  done clear
  B)
   25 W
  done clear
  C)
   20 W          
  done clear
  D)
   15 W
  done clear
  View Answer play_arrow

• question_answer35) An electron and proton are placed at distance 4.3 nm. What is dipole moment (C-m)?
  A)
   \[3.44\times {{10}^{-28}}\]    
  done clear
  B)
   \[2\times {{10}^{-28}}\]
  done clear
  C)
   \[6.88\times {{10}^{-28}}\]        
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer36)  What is current \[I.\]
  A)
   6A               
  done clear
  B)
   5A
  done clear
  C)
   7 A               
  done clear
  D)
   8 A
  done clear
  View Answer play_arrow

• question_answer37) Police is chasing the thief 50 m ahead. In 10 s distance between them reduces by 6 m. What is distance between them in 25 s?
  A)
   10m            
  done clear
  B)
   25m
  done clear
  C)
   35m            
  done clear
  D)
   20m
  done clear
  View Answer play_arrow

• question_answer38) A body of mass 10 kg initially at rest acquires velocity 10 m/s. What is the work done?
  A)
   -500 J         
  done clear
  B)
   500 J
  done clear
  C)
   50 J             
  done clear
  D)
   -50 J
  done clear
  View Answer play_arrow

• question_answer39) A projectile is projected at an angle \[{{60}^{o}}\] with horizontal with speed 10 m/s. The minimum radius of curvature of trajectory described by die projectile is
  A)
   2.25 m         
  done clear
  B)
   2 m
  done clear
  C)
   10 m      
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer40) What is nature of light and sound waves?
  A)
   Light is transverse and sound is longitudinal
  done clear
  B)
   Light is longitudinal and sound is transverse
  done clear
  C)
   Both are transverse
  done clear
  D)
   Both are longitudinal
  done clear
  View Answer play_arrow

• question_answer41) If the colour code of carbon resistor is as follows, then give the value of its resistance in\[\text{k}\Omega \].  Colour of I strip - yellow  Colour of II strip - blue  Colour of III strip - orange  Colour of IV strip - gold
  A)
   \[46\pm 5%\]       
  done clear
  B)
   \[0.46\pm 5%\]
  done clear
  C)
   \[46\pm 10%\]      
  done clear
  D)
   \[0.46\pm 10%\]
  done clear
  View Answer play_arrow

• question_answer42) Self-inductance of solenoid is proportional to
  A)
   \[\frac{NA}{l}\]
  done clear
  B)
   \[\frac{N{{A}^{2}}}{l}\]
  done clear
  C)
   \[\frac{A}{l}\]
  done clear
  D)
   \[\frac{{{N}^{2}}A}{l}\]
  done clear
  View Answer play_arrow

• question_answer43) A body is rolling down an inclined plane. If KE of rotation is 40% of KE in translatory state, then the body is a
  A)
   ring             
  done clear
  B)
   cylinder
  done clear
  C)
   hollow ball      
  done clear
  D)
   solid ball
  done clear
  View Answer play_arrow

• question_answer44) Consider the following equation of Bernoullis theorem \[p+\frac{1}{2}\rho {{V}^{2}}+\rho gh=k\] (Constant) The dimensions of k/p are same as that of which of the following?
  A)
   Thrus           
  done clear
  B)
   Pressure
  done clear
  C)
   Angle            
  done clear
  D)
   Viscosity
  done clear
  View Answer play_arrow

• question_answer45) Resistance of tungsten wire at \[{{150}^{o}}C\] is \[133\Omega .\]. Its resistance temperature coefficient is \[{{0045}^{o}}/C\]. The resistance of the wire at \[500{}^\circ C\] will be
  A)
   \[180\,\Omega \]          
  done clear
  B)
   \[225\,\Omega \]
  done clear
  C)
   \[258\,\Omega \]
  done clear
  D)
   \[317\,\Omega \]
  done clear
  View Answer play_arrow

• question_answer46) In a radioactive decay process, the negatively charged emitted B-particles are
  A)
   the electrons present inside the nucleus
  done clear
  B)
   the electrons produced as a result of the decay of neutrons inside the nucleus
  done clear
  C)
   the electrons produced as a result of collisions between atoms
  done clear
  D)
   the electrons orbiting around the nucleus
  done clear
  View Answer play_arrow

• question_answer47) If an electron jumps from 1st orbit to 3rd orbit, then it will
  A)
   absorb energy   
  done clear
  B)
   release energy
  done clear
  C)
   no gain of energy
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer48) Activity of radioactive element decreased to one-third of original activity \[{{R}_{o}}\] in 9 yr. After further 9 yr, its activity will be
  A)
   \[{{R}_{o}}\]
  done clear
  B)
   \[\frac{2}{3}{{R}_{o}}\]
  done clear
  C)
   \[\frac{{{R}_{o}}}{9}\]
  done clear
  D)
   \[\frac{{{R}_{o}}}{6}\]
  done clear
  View Answer play_arrow

• question_answer49)   Which of the following four fundamental forces has shortest range?
  A)
   Nuclear         
  done clear
  B)
   Gravitational
  done clear
  C)
   Electromagnetic 
  done clear
  D)
   Weak force
  done clear
  View Answer play_arrow

• question_answer50) The angle of minimum deviation for a prism is  \[{{40}^{o}}\] and the angle of the prism is \[{{60}^{o}}\]. The angle of incidence in this position will be
  A)
   \[{{30}^{o}}\]             
  done clear
  B)
   \[{{60}^{o}}\]
  done clear
  C)
   \[{{50}^{o}}\]
  done clear
  D)
   \[{{100}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer51) Identify B in the following reaction
  A)
   
  done clear
  B)
   
  done clear
  C)
         
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer52) Which of the following is chiral?
  A)
   \[Cl-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\]
  done clear
  B)
   \[C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-C{{H}_{3}}\]
  done clear
  C)
   \[Cl-CH=CH-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\]
  done clear
  D)
   \[H-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{C}}\,=C=CH-C{{H}_{2}}-C{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer53) In the given compound which of the following hydrogens is most acidic? \[\underset{(a)}{\mathop{C{{H}_{3}}}}\,-\underset{(b)}{\mathop{C}}\,{{H}_{2}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-\underset{(C)}{\mathop{C{{H}_{3}}}}\,\]
  A)
   Only [a]
  done clear
  B)
   Only [b]
  done clear
  C)
   Only [c]
  done clear
  D)
   Both [b] and [c]
  done clear
  View Answer play_arrow

• question_answer54) The following solids are formed by X, Q and Z.\[X{{Y}_{2}},\,\,{{X}_{2}}Z,\,\,QZ\]. Then the formula of the compound formed by Q and Y is
  A)
   QY            
  done clear
  B)
   \[{{Q}_{2}}{{Y}_{3}}\]
  done clear
  C)
   \[Q{{Y}_{4}}\]            
  done clear
  D)
   \[Q{{Y}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer55) In the following complex compound\[{{[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]}^{+}}\], Co and \[Cl\] are collinear. Which of the following structures is possible?
  A)
   linkage         
  done clear
  B)
   trans
  done clear
  C)
   ci5              
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer56) 
  A)
   
  done clear
  B)
   
  done clear
  C)
        
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer57) Which of the following is false for tetrahedral complexes?
  A)
   Low spin        
  done clear
  B)
   High spin
  done clear
  C)
   d-d transition    
  done clear
  D)
   Coloured
  done clear
  View Answer play_arrow

• question_answer58) In the following reaction \[NH_{4}^{+}+BiN\xrightarrow{{}}N{{H}_{3}}+B{{i}^{3+}}\] \[NH_{4}^{+}\] is acting as an
  A)
   oxidising agent  
  done clear
  B)
   acid
  done clear
  C)
   base             
  done clear
  D)
   catalyst
  done clear
  View Answer play_arrow

• question_answer59) Strongest Lewis acid among the following is
  A)
   \[N{{F}_{3}}\]            
  done clear
  B)
   \[PC{{l}_{3}}\]
  done clear
  C)
   \[SnC{{l}_{4}}\]
  done clear
  D)
   \[PbC{{l}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer60) \[NaH\], when dissolved in water, produces
  A)
   acidic medium
  done clear
  B)
   basic medium
  done clear
  C)
   neutral medium
  done clear
  D)
   Cannot be predicted
  done clear
  View Answer play_arrow

• question_answer61) In a closed packed structure
  A)
   tetrahedral voids are bigger than octahedral
  done clear
  B)
   tetrahedral voids are smaller than octahedral
  done clear
  C)
   tetrahedral voids are equal in size as octahedral
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer62) An element with configuration\[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}\] will form a compound of highest ionic character with the element having configuration
  A)
   \[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}}\]
  done clear
  B)
   \[[Ar]\,4{{s}^{1}},3{{d}^{10}}\]
  done clear
  C)
   \[[Ar]\,4{{s}^{1}}\]
  done clear
  D)
   \[1{{s}^{2}},\,2{{s}^{1}}\]
  done clear
  View Answer play_arrow

• question_answer63) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}COOH\xrightarrow{{}}\] \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}-\overset{\begin{smallmatrix}  N{{H}_{2}} \\  | \end{smallmatrix}}{\mathop{C}}\,H-COOH\] the reagents used in the conversion are
  A)
   (i) \[PB{{r}_{3}}/\](ii) \[N{{H}_{3}}\]
  done clear
  B)
   (i) red P, \[B{{r}_{2}}/\](ii) \[N{{H}_{3}}\] (excess)
  done clear
  C)
   (i) \[PB{{r}_{3}},NaCN/\] (ii) \[LiAl{{H}_{4}}\]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer64) Empirical formula of compound having molar mass 58 is \[{{C}_{2}}{{H}_{5}}\]. Number of structural isomers possible, are
  A)
   1                 
  done clear
  B)
   2
  done clear
  C)
   3
  done clear
  D)
   4
  done clear
  View Answer play_arrow

• question_answer65) Most stable carbocation among the following is
  A)
   
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
   All are equally
  done clear
  View Answer play_arrow

• question_answer66) Which of the following has highest ionization energy?
  A)
   \[{{K}^{+}}\]               
  done clear
  B)
   \[C{{l}^{-}}\]
  done clear
  C)
   Ar              
  done clear
  D)
   \[C{{s}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer67)  the type of reaction is
  A)
   electrophilic substitution
  done clear
  B)
   nucleophilic substitution
  done clear
  C)
   free radical substitution
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer68) Which of the following is true at equilibrium?
  A)
   \[\Delta G=0\]        
  done clear
  B)
   \[\Delta H=T\Delta S\]
  done clear
  C)
   \[\Delta G=\Delta H+T\Delta S\] 
  done clear
  D)
   Both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer69) Dichlorobenzoic acid \[\xrightarrow{Mononitration}\]Product (only one). The structure of reactant can be
  A)
   
  done clear
  B)
   
  done clear
  C)
    
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer70) In the equilibrium \[2N{{H}_{3}}\rightleftarrows {{N}_{2}}+3{{H}_{2}},6\] moles of \[N{{H}_{3}}\] is taken in 10 L flask. If concentration of \[{{N}_{2}}\] at equilibrium is \[x\], then concentration of \[N{{H}_{3}}\] at equilibrium is
  A)
   \[0.6\,-x\]         
  done clear
  B)
   \[0.6\,-2x\]
  done clear
  C)
   \[0.6\,-\frac{x}{2}\]          
  done clear
  D)
   None is correct
  done clear
  View Answer play_arrow

• question_answer71) Teflon is repeating unit of
  A)
   \[-C{{F}_{2}}-C{{F}_{2}}-\]
  done clear
  B)
   \[C{{F}_{2}}=C{{F}_{2}}\]
  done clear
  C)
   \[-(C{{H}_{2}}-C{{H}_{2}}){{-}_{n}}\]
  done clear
  D)
    
  done clear
  View Answer play_arrow

• question_answer72) The number of \[\pi \]-bonds in the following compound \[{{O}_{2}}N-C\equiv -N{{O}_{2}}\], is
  A)
   2             
  done clear
  B)
   3
  done clear
  C)
   4             
  done clear
  D)
   1
  done clear
  View Answer play_arrow

• question_answer73) Most reactive compound towards electrophilic substitution is
  A)
    
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer74) Which of the following is true representation of lattice energy?
  A)
   \[N{{a}^{+}}(s)+\frac{1}{2}C{{l}_{2}}(g)\xrightarrow{{}}NaCl(s)\]
  done clear
  B)
   \[N{{a}^{+}}(s)+C{{l}^{-}}(g)\xrightarrow{{}}NaCl(s)\]
  done clear
  C)
   \[N{{a}^{+}}(g)+C{{l}^{-}}(g)\xrightarrow{{}}NaCl(s)\]
  done clear
  D)
   \[N{{a}^{+}}(s)+Cl(s)\xrightarrow{{}}NaCl(s)\]
  done clear
  View Answer play_arrow

• question_answer75) Arrange the following acids in decreasing order of acidic strength

  \[\underset{I}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-COOH}}\,\]

  \[\underset{II}{\mathop{C{{H}_{3}}C{{H}_{2}}-C{{H}_{2}}-C{{H}_{2}}OH}}\,\]

  \[\underset{\text{IV}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C\equiv CH}}\,\]

  A)
   \[I>II>III>IV\]
  done clear
  B)
   \[III>IV>II>I\]
  done clear
  C)
   \[I>III>IV>II\]
  done clear
  D)
   \[I>II>II>IV\]
  done clear
  View Answer play_arrow

• question_answer76) The best condition for heterogeneous catalysis is
  A)
   adsorption      
  done clear
  B)
   absorption
  done clear
  C)
   diffusion        
  done clear
  D)
   occlusion
  done clear
  View Answer play_arrow

• question_answer77) Functionality of protein depends on
  A)
   its shape and structure
  done clear
  B)
   pH of medium
  done clear
  C)
   temperature
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer78) In acidic medium, \[CrO_{4}^{2-}\] changes to
  A)
   \[C{{r}_{2}}O_{7}^{2-}\]          
  done clear
  B)
   \[C{{r}^{3+}}\]
  done clear
  C)
   \[Cr\,(IV)\]          
  done clear
  D)
   \[C{{r}_{2}}{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer79) \[F{{e}^{2+}}\xrightarrow{{}}F{{e}^{3+}}+{{e}^{-}}\]\[MnO_{4}^{-}+5{{e}^{-}}\xrightarrow{{}}M{{n}^{2+}}\]the ratio of stoichiometric coefficient of \[F{{e}^{2+}}\] and \[MnO_{4}^{-}\]is
  A)
   1 : 5           
  done clear
  B)
   5 : 1
  done clear
  C)
   2 : 3           
  done clear
  D)
   6 : 1
  done clear
  View Answer play_arrow

• question_answer80) Which of the following is change in enthalpy?
  A)
   A                
  done clear
  B)
   B
  done clear
  C)
   C                
  done clear
  D)
   D
  done clear
  View Answer play_arrow

• question_answer81) \[Zn(s)+C{{l}_{2}}(1\,atm)\xrightarrow{{}}Z{{n}^{2+}}+2C{{l}^{-}}\]. \[E_{cell}^{o}\] of the cell is 2.12 V. To increase E
  A)
   \[[Z{{n}^{2+}}]\] should be increased
  done clear
  B)
   \[[Z{{n}^{2+}}]\] should be decreased
  done clear
  C)
   \[[C{{l}^{-}}]\] should be decreased
  done clear
  D)
   \[{{p}_{C{{l}_{2}}}}\] should be decreased
  done clear
  View Answer play_arrow

• question_answer82) Which of the following substances acts as an oxidising as well as reducing agent?
  A)
   \[N{{a}_{2}}O\]
  done clear
  B)
   \[SnC{{l}_{2}}\]
  done clear
  C)
   \[N{{a}_{2}}{{O}_{2}}\]
  done clear
  D)
   \[NaN{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer83) Which one of the following ions has the highest value of ionic radius?
  A)
   \[{{O}^{2-}}\]         
  done clear
  B)
   \[{{B}^{3+}}\]
  done clear
  C)
   \[L{{i}^{+}}\]             
  done clear
  D)
   \[{{F}^{-}}\]
  done clear
  View Answer play_arrow

• question_answer84) Setting of cement is an
  A)
   exothermic reaction
  done clear
  B)
   endothermic reaction
  done clear
  C)
   neither exothermic nor endothermic
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer85) Which of the following is paramagnetic?
  A)
   \[N{{i}^{2+}}\]            
  done clear
  B)
   \[C{{u}^{+}}\]
  done clear
  C)
    \[Z{{n}^{2+}}\]
  done clear
  D)
   \[S{{c}^{3+}}\]
  done clear
  View Answer play_arrow

• question_answer86) Iron is rendered passive by the action of
  A)
   conc. \[{{H}_{2}}S{{O}_{4}}\]    
  done clear
  B)
   cone. \[{{H}_{3}}P{{O}_{4}}\]
  done clear
  C)
   conc. \[HCl\]      
  done clear
  D)
   conc. \[HN{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer87) An aqueous solution of \[CoC{{l}_{2}}\] on addition of excess of cone. \[HCl\] turns blue due to the formation of
  A)
   \[[Co({{H}_{2}}O)]C{{l}_{2}}\]
  done clear
  B)
   \[[Co{{({{H}_{2}}O)}_{2}}]C{{l}_{4}}{{]}^{2-}}\]
  done clear
  C)
   \[{{[CoC{{l}_{4}}]}^{2-}}\]        
  done clear
  D)
   \[[Co{{({{H}_{2}}O)}_{2}}C{{l}_{2}}]\]
  done clear
  View Answer play_arrow

• question_answer88) Which of the following is not present in a nucleotide?
  A)
   Cytosine        
  done clear
  B)
   Guanine
  done clear
  C)
   Adenine         
  done clear
  D)
   Tyrosine
  done clear
  View Answer play_arrow

• question_answer89) Which of the following is used as an antibiotic?
  A)
   Ciprofloxacin    
  done clear
  B)
   Paracetamol
  done clear
  C)
   Ibuprofen       
  done clear
  D)
   Tocopherol
  done clear
  View Answer play_arrow

• question_answer90) Benzaldehyde condenses with N,N-Dimethylamline in presence of anhydrous \[ZnC{{l}_{2}}\] to give
  A)
   Michlers ketone
  done clear
  B)
   azo dye
  done clear
  C)
   malachite green  
  done clear
  D)
   buffer yellow
  done clear
  View Answer play_arrow

• question_answer91) Which of the following is secondary pollutant?
  A)
   \[C{{O}_{2}}\]            
  done clear
  B)
   \[{{N}_{2}}O\]
  done clear
  C)
   PAN           
  done clear
  D)
   \[S{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer92) What will be the volume of 12 M solution, if it is equivalent to 240 mL of 18 M solution?
  A)
   6L           
  done clear
  B)
   600 L
  done clear
  C)
   400L          
  done clear
  D)
   0.36L
  done clear
  View Answer play_arrow

• question_answer93) The specific rotation of a pure enantiomer is\[+{{10}^{o}}\]. The observed rotation, if it is isolated from a reaction with 30% racemisation and 70% retention, is
  A)
   \[+{{10}^{o}}\]         
  done clear
  B)
   \[+{{7}^{o}}\]
  done clear
  C)
   \[+{{14}^{o}}\]          
  done clear
  D)
   \[-{{7}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer94) IUPAC name of the following \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{N}}\,-\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  {{C}_{2}}{{H}_{5}} \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\]
  A)
   3-dimethylamino-3-methyl pentane
  done clear
  B)
   3 (N,N-trimethyl)-3-amino pentane
  done clear
  C)
   3 N-N-trimethyl pentammine
  done clear
  D)
   3-(N,N-dimethyl) amino 3-methyl pentane
  done clear
  View Answer play_arrow

• question_answer95) The equivalent weight of a metal is 9 and vapour density of its chloride is 59.25. The atomic weight of metal is
  A)
   23.9            
  done clear
  B)
   27.3
  done clear
  C)
   36.3            
  done clear
  D)
   48.3
  done clear
  View Answer play_arrow

• question_answer96) Splitting of spectral lines under the influence of magnetic field is called
  A)
   Zeeman effect
  done clear
  B)
   Starck effect
  done clear
  C)
   Photoelectric effect
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer97) Which of the following molecule has pyramidal shape?
  A)
   \[PC{{l}_{3}}\]          
  done clear
  B)
   \[S{{O}_{3}}\]
  done clear
  C)
   \[CO_{3}^{2-}\]
  done clear
  D)
   \[NO_{3}^{-}\]
  done clear
  View Answer play_arrow

• question_answer98) Equation of Boyles law is
  A)
   \[\frac{dp}{p}=-\frac{dV}{V}\]
  done clear
  B)
   \[\frac{dp}{p}=+\frac{dV}{V}\]
  done clear
  C)
   \[\frac{{{d}^{2}}p}{p}=-\frac{dV}{V}\]
  done clear
  D)
   \[\frac{{{d}^{2}}p}{p}=+\frac{{{d}^{2}}V}{dT}\]
  done clear
  View Answer play_arrow

• question_answer99) An element has half-life 1600 yr. The mass left after 6400 yr will be
  A)
   1/16           
  done clear
  B)
   1/12
  done clear
  C)
   1/4            
  done clear
  D)
   1/32
  done clear
  View Answer play_arrow

• question_answer100) Boiling point of chloroform was raised by 0.323 K, when 0.5143 g of anthracene was dissolved in 35 g of chloroform. Molecular mass of anthracene is \[({{k}_{f}}for\,CHC{{l}_{3}}=3.9\,K\,kg\,mo{{l}^{-1}})\]
  A)
   79.42 g/mol
  done clear
  B)
   132.32 g/mol
  done clear
  C)
   177.42 g/mol   
  done clear
  D)
   242.32 g/mol
  done clear
  View Answer play_arrow

• question_answer101) Which of the following event occurs during \[{{G}_{1}}\]-phase?
  A)
   DNA replication
  done clear
  B)
   Growth and normal function of cell
  done clear
  C)
   Mutation
  done clear
  D)
   Fertilization
  done clear
  View Answer play_arrow

• question_answer102) The stage during which, cell decides to get specialized
  A)
   S-phase         
  done clear
  B)
   M-phase
  done clear
  C)
   \[{{G}_{1}}\]-phase        
  done clear
  D)
   \[{{G}_{2}}\]-phase
  done clear
  View Answer play_arrow

• question_answer103) In which of the following wavelength, photosystem-I is inactive?
  A)
   780 nm        
  done clear
  B)
   680 nm
  done clear
  C)
   690 nm         
  done clear
  D)
   550 nm
  done clear
  View Answer play_arrow

• question_answer104) ADH deficiency causes
  A)
   diabetes insipidus
  done clear
  B)
   goitre
  done clear
  C)
   tetany           
  done clear
  D)
   acromegaly
  done clear
  View Answer play_arrow

• question_answer105) Law of limiting factor of photosynthesis was proposed by
  A)
   von Mayer      
  done clear
  B)
   Arnon
  done clear
  C)
   FF Blackmann 
  done clear
  D)
   Hill
  done clear
  View Answer play_arrow

• question_answer106) Opening of stomaia is not affected by
  A)
   \[{{N}_{3}}\]             
  done clear
  B)
   \[{{K}^{+}}\] ions
  done clear
  C)
   Starch          
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer107) The IV cranial nerve is
  A)
   oculomotor      
  done clear
  B)
   trochlear
  done clear
  C)
   olfactory        
  done clear
  D)
   facial
  done clear
  View Answer play_arrow

• question_answer108) Subunits of 80S ribosome are
  A)
   40S            
  done clear
  B)
   60S
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer109) The stored food in animals is called
  A)
   cellulose         
  done clear
  B)
   starch
  done clear
  C)
   glucose          
  done clear
  D)
   glycogen
  done clear
  View Answer play_arrow

• question_answer110) The cellular respiration first takes place in the
  A)
   cytoplasm       
  done clear
  B)
   Golgi bodies
  done clear
  C)
   ER              
  done clear
  D)
   lysosomes
  done clear
  View Answer play_arrow

• question_answer111) Which of the following substrate is used in the formation of alcohol?
  A)
   Sucrose         
  done clear
  B)
   Glucose
  done clear
  C)
   Galactose       
  done clear
  D)
   Fructose
  done clear
  View Answer play_arrow

• question_answer112) If a person is feeding only on meat, egg and milk then he will suffer from
  A)
   nightblindness   
  done clear
  B)
   scurvy
  done clear
  C)
   rickets          
  done clear
  D)
   beri-beri
  done clear
  View Answer play_arrow

• question_answer113) Rubisco stands for
  A)
   Ribulose bisphosphate carboxylase oxygenase
  done clear
  B)
   Ribulose phosphate carboxylase xygenase
  done clear
  C)
   Ribulose phosphate carboxylic oxygenase
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer114) Net gain of ATP molecules per hexose during  aerobic respiration is
  A)
   12              
  done clear
  B)
   18
  done clear
  C)
   36              
  done clear
  D)
   30
  done clear
  View Answer play_arrow

• question_answer115) The term hot dilute soup was used by
  A)
   Haldane        
  done clear
  B)
   von Helmont
  done clear
  C)
   Redi           
  done clear
  D)
   Louis Pasteur
  done clear
  View Answer play_arrow

• question_answer116) Which of the following classification is based  on some morphological characters?
  A)
   Artificial        
  done clear
  B)
   Natural
  done clear
  C)
   Phylogenetic     
  done clear
  D)
   Both [b] and [c]
  done clear
  View Answer play_arrow

• question_answer117) Sweet potato and potato are examples of
  A)
   homologous structure
  done clear
  B)
   analogous structure
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer118) Systema Naturae was written by
  A)
   Hutchinson
  done clear
  B)
   Lamarck
  done clear
  C)
   Linnaeus
  done clear
  D)
   Bentham and Hooker
  done clear
  View Answer play_arrow

• question_answer119) In the origin of life, microspheres are moot primitive protobiont, which have a membrane of
  A)
   lipid and proteins
  done clear
  B)
   lipid
  done clear
  C)
   carbohydrates   
  done clear
  D)
   fats
  done clear
  View Answer play_arrow

• question_answer120) Rabies is caused by
  A)
   virus            
  done clear
  B)
   bacteria
  done clear
  C)
   Protozoa        
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer121) Tuberculosis is caused by
  A)
   Vibrio cholerae   
  done clear
  B)
   Mycobacterium
  done clear
  C)
   Salmonella typhi
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer122) Fresh water bony fish survives by
  A)
   get rid of \[{{H}_{2}}O\] and gain salt
  done clear
  B)
   get rid of salt and gain \[{{H}_{2}}O\]
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer123) Nitrification is the process of conversion of
  A)
   \[N{{H}_{3}}\]            
  done clear
  B)
   \[N{{O}_{2}}\]
  done clear
  C)
   \[N{{O}_{3}}\]
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer124) Which of the following provides nutrition tosperm?
  A)
   Leydig cells      
  done clear
  B)
   Scrotum
  done clear
  C)
   Sertoli cells      
  done clear
  D)
   Epididymis
  done clear
  View Answer play_arrow

• question_answer125) Oral contraceptive pills function by
  A)
   fertilization
  done clear
  B)
   inhibiting ovulation
  done clear
  C)
   reproduction
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer126) Sphaerocarpos belongs to
  A)
   Bryophyta      
  done clear
  B)
   Pteridophyta
  done clear
  C)
   gymnosperm    
  done clear
  D)
   angiosperm
  done clear
  View Answer play_arrow

• question_answer127) Fungi differs from slime moulds by lacking of
  A)
   flagellated spores
  done clear
  B)
   ascospores
  done clear
  C)
   basidiospores    
  done clear
  D)
   zygospores
  done clear
  View Answer play_arrow

• question_answer128) Saprozoic type of feeding habit is found in which of the following animal?
  A)
   Mosquito       
  done clear
  B)
   Scorpion
  done clear
  C)
   Spider          
  done clear
  D)
   Cockroach
  done clear
  View Answer play_arrow

• question_answer129) Fungi are classified on the basis of
  A)
   sexual reproduction
  done clear
  B)
   asexual reproduction
  done clear
  C)
   vegetative reproduction
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer130) Wiich one of the following does not belong to kingdom-Monera?
  A)
   Mycoplasma    
  done clear
  B)
   Archaebacteria
  done clear
  C)
   Slime mould    
  done clear
  D)
   Eubacteria
  done clear
  View Answer play_arrow

• question_answer131) Which one of the following is not a plastid?
  A)
   Mitoplast       
  done clear
  B)
   Chromoplast
  done clear
  C)
   Chloroplast   
  done clear
  D)
   Leucoplast
  done clear
  View Answer play_arrow

• question_answer132) In retroviruses, RNA dependent DMA Polymerase synthesizes
  A)
   RNA-DNA      
  done clear
  B)
   DNA
  done clear
  C)
   RNA           
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer133) What will happen. When glucose is   administered orally?
  A)
   Excretion        
  done clear
  B)
   Digestion
  done clear
  C)
   Circulation       
  done clear
  D)
   Respiration
  done clear
  View Answer play_arrow

• question_answer134) Agrose is a gel, which is used to separate
  A)
   carbohydrate    
  done clear
  B)
   fats
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   protein
  done clear
  View Answer play_arrow

• question_answer135) The process of reverse transcription was discovered by
  A)
   Temin and Baltimore
  done clear
  B)
   Watson and Crick
  done clear
  C)
   Alfred Hershey  
  done clear
  D)
   None of the aboce
  done clear
  View Answer play_arrow

• question_answer136) Which one of the following animal has pseudocoelome ?
  A)
   Cockroach      
  done clear
  B)
   Ancylostoma
  done clear
  C)
   Aurelia          
  done clear
  D)
   Fasiola
  done clear
  View Answer play_arrow

• question_answer137) The process of joining of amino acids is called
  A)
   transcription     
  done clear
  B)
   translation
  done clear
  C)
   conjugation     
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer138) Which of the following isotopes is used for finding the fossil having age more than 4500  year?
  A)
   \[{{U}^{238}}\]             
  done clear
  B)
   \[{{U}^{235}}\]
  done clear
  C)
   \[P{{o}^{235}}\]
  done clear
  D)
   \[^{12}C\]
  done clear
  View Answer play_arrow

• question_answer139) The infective stage of Plasmodium vivax is
  A)
   sporozoite       
  done clear
  B)
   gametocyte
  done clear
  C)
   trophozoite      
  done clear
  D)
   cryptozoite
  done clear
  View Answer play_arrow

• question_answer140) Which of the following is obtained from genetic engineering?
  A)
   Haemoglobin    
  done clear
  B)
   Glucose
  done clear
  C)
   Golden rice      
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer141) H. Which of the following is a test cross?
  A)
   Ww \[\times \] ww        
  done clear
  B)
   WW \[\times \] ww
  done clear
  C)
   Ww \[\times \] Ww      
  done clear
  D)
   ww \[\times \] ww
  done clear
  View Answer play_arrow

• question_answer142) One gene-one enzyme hypothesis wa propounded by
  A)
   Beadle and Tatum
  done clear
  B)
   Louis Pasteur
  done clear
  C)
   J B S Haldane
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer143) The glenoid cavity is associated with
  A)
   scapula         
  done clear
  B)
   humerus
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer144) The nerve fibre in its resting stage is
  A)
   more permeable to \[{{K}^{+}}\]
  done clear
  B)
   semi-permeable to \[{{K}^{+}}\]
  done clear
  C)
   less permeable to \[{{K}^{+}}\]
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer145) Genes when close together on a  chromosomes are known as
  A)
   linkage          
  done clear
  B)
   mutation
  done clear
  C)
   translation      
  done clear
  D)
   transcription
  done clear
  View Answer play_arrow

• question_answer146) The theory of pangenesis was rejected due to the acceptance of
  A)
   Spallanzani theory of biogenesis
  done clear
  B)
   Richter theory of cosmozoic
  done clear
  C)
   Cuvier theory of catastropism
  done clear
  D)
   Weismann theory of germplasm
  done clear
  View Answer play_arrow

• question_answer147) In human beings, 45 chromosomes/single X/XO abnormality causes
  A)
   Downs syndrome
  done clear
  B)
   Klinefelters syndrome
  done clear
  C)
   Turners syndrome
  done clear
  D)
   Edwards syndrome
  done clear
  View Answer play_arrow

• question_answer148) An evolutionary process, giving rise to new species adapting to new habitats and ways of life is called
  A)
   adaptive radiation
  done clear
  B)
   adaptation
  done clear
  C)
   convergent evolution
  done clear
  D)
   microevolution
  done clear
  View Answer play_arrow

• question_answer149) The chromosomal arrangement results in
  A)
   euploidy        
  done clear
  B)
   aneuploidy
  done clear
  C)
   duplication      
  done clear
  D)
   polyploidy
  done clear
  View Answer play_arrow

• question_answer150) One of these is associated with terminator codon?
  A)
   AGG          
  done clear
  B)
   UAA
  done clear
  C)
   UUA           
  done clear
  D)
   AUG
  done clear
  View Answer play_arrow

• question_answer151) The inherent maximum capacity of an organism to reproduce or increase in number is called as
  A)
   biotic potential
  done clear
  B)
   ecosystem
  done clear
  C)
   population
  done clear
  D)
   ecology
  done clear
  View Answer play_arrow

• question_answer152) Which of the following is best suited for co dominance?
  A)
   Both are recessive  
  done clear
  B)
   Both are dominance
  done clear
  C)
   One is recessive
  done clear
  D)
   One is dominance
  done clear
  View Answer play_arrow

• question_answer153) The substance which is metal ion for the normal functioning of enzyme is called
  A)
   cofactor        
  done clear
  B)
   coenzyme
  done clear
  C)
   holoenzyme     
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer154) Scala Naturae was written by
  A)
   Linnaeus        
  done clear
  B)
   Darwin
  done clear
  C)
   Aristotle         
  done clear
  D)
   Whittaker
  done clear
  View Answer play_arrow

• question_answer155) The gene which masks the effect of another gene is called
  A)
   epistasis
  done clear
  B)
   lethal gene
  done clear
  C)
   multiple allele
  done clear
  D)
   complementary gene
  done clear
  View Answer play_arrow

• question_answer156) In a DNA molecule, the adenine is 15%. Wha will be the percentage of guanine in this DNA?
  A)
   15%           
  done clear
  B)
   35%
  done clear
  C)
   70%           
  done clear
  D)
   30%
  done clear
  View Answer play_arrow

• question_answer157) Which one is used in the production of insulin by genetic engineering?
  A)
   Eschereria coli   
  done clear
  B)
   Mycobacterium
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer158) The synthesis of complex molecules from simple molecules was proved by
  A)
   Arrhenius       
  done clear
  B)
   Pasteur
  done clear
  C)
   Stanley Miller   
  done clear
  D)
   Redi
  done clear
  View Answer play_arrow

• question_answer159) Which is not correct according to Chargaffs rule?
  A)
   \[A+T=C+G\]
  done clear
  B)
   \[A+G=C+T\]
  done clear
  C)
   \[\frac{A+G}{C+T}=1\]       
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer160) The interaction of species with the environment is called as                          
  A)
   community     
  done clear
  B)
   environment
  done clear
  C)
   ecosystem       
  done clear
  D)
   autecology
  done clear
  View Answer play_arrow

• question_answer161) Which of the following cells are associated  with identification of colours in bright light?
  A)
   Rod cells        
  done clear
  B)
   Cone cells
  done clear
  C)
   Both [a] and [b]
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer162) Which of the following defines Hardey  Weinbergs law?
  A)
   \[{{p}^{2}}+\text{ }2pq+\text{ }{{q}^{2}}=\text{ }1\]
  done clear
  B)
  \[{{p}^{2}}+\text{ }2pq+\text{ }{{q}^{2}}=\text{ }1\]
  done clear
  C)
   \[{{p}^{2}}+\text{ }2pq+\text{ }{{q}^{2}}=\text{ }0\]
  done clear
  D)
   \[{{q}^{2}}+\text{ }{{p}^{2}}+\text{ }2pq=\text{ }0\]
  done clear
  View Answer play_arrow

• question_answer163) The size of the clay particle is less than
  A)
   0.02 mm        
  done clear
  B)
   0.002 mm
  done clear
  C)
   0.2 mm          
  done clear
  D)
   2.0 mm
  done clear
  View Answer play_arrow

• question_answer164) Photochemical smog pollution does not  contain
  A)
   ozone          
  done clear
  B)
   nitrogen dioxide
  done clear
  C)
   carbon dioxide  
  done clear
  D)
   PAN
  done clear
  View Answer play_arrow

• question_answer165) . Decrease in the calcium level in blood is  caused by
  A)
   prolactin
  done clear
  B)
   calcitonin
  done clear
  C)
   adrenocorticotropin
  done clear
  D)
   oxytocin
  done clear
  View Answer play_arrow

• question_answer166) Heavier and lighter isotopic form of an  element can be separated by the technique of
  A)
   buoyant density centrifugation
  done clear
  B)
   density gradient centrifugation
  done clear
  C)
   chromatography
  done clear
  D)
   electrophoresis
  done clear
  View Answer play_arrow

• question_answer167) The ozone layer is found in
  A)
   troposphere     
  done clear
  B)
   mesosphere
  done clear
  C)
   stratosphere     
  done clear
  D)
   atmosphere
  done clear
  View Answer play_arrow

• question_answer168) The pectoral fins get enlarged in
  A)
   Exocoetus        
  done clear
  B)
   Scoliodon
  done clear
  C)
   Hippocampus    
  done clear
  D)
   Coccosreus
  done clear
  View Answer play_arrow

• question_answer169) What is a keystone species ?               
  A)
   A species which adds upto only a small proportion of the total biomass of a community, yet has a huge impact on the communitys organization and survival
  done clear
  B)
   A common species that has plenty of biomass, yet has a fairly low impact on the communitys organization
  done clear
  C)
   A rare species that has minimal impact oc the biomass and on other species in the community
  done clear
  D)
   A dominant species that constitutes a large proportion of the biomass and which affects many other species
  done clear
  View Answer play_arrow

• question_answer170) Which one of the following plant functions as symbiotic nitrogen fixing plant?
  A)
   Azolla          
  done clear
  B)
   Cycas
  done clear
  C)
   Moss           
  done clear
  D)
   Marchantia
  done clear
  View Answer play_arrow

• question_answer171) Bowmans glands are found in
  A)
   olfactory epithelium
  done clear
  B)
   external auditory canal
  done clear
  C)
   cortical nephrons only
  done clear
  D)
   juxta medullary nephrons
  done clear
  View Answer play_arrow

• question_answer172) An important evidence in favour of organic evolution is the occurrence of
  A)
   homologous and vestigial organs
  done clear
  B)
   analogous and vestigial organs
  done clear
  C)
   homologous organs only
  done clear
  D)
   Homologous and analogous organs
  done clear
  View Answer play_arrow

• question_answer173) Eutrophication is the result of           
  A)
   bryophyte
  done clear
  B)
   algae and aquatic plants
  done clear
  C)
   gymnosperm
  done clear
  D)
   pteridophyte
  done clear
  View Answer play_arrow

• question_answer174) Which one of the following is no  biodegradable?
  A)
   Sewage         
  done clear
  B)
   DDT
  done clear
  C)
   Live stock waste 
  done clear
  D)
   Market garbage
  done clear
  View Answer play_arrow

• question_answer175) ADH controls water permeability of
  A)
   distal convoluted tubule
  done clear
  B)
   proximal convoluted tubule
  done clear
  C)
   Bowmans capsule
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer176) The cause of decline in the population of reptiles and birds is
  A)
   DDT            
  done clear
  B)
   biofertilizer
  done clear
  C)
   bioinsecticides   
  done clear
  D)
   biodegradable
  done clear
  View Answer play_arrow

• question_answer177) Which one of the following shows detritus food Aain?
  A)
   Organic waste \[\to \] Bacteria \[\to \] Molluscus
  done clear
  B)
   Grass \[\to \] Insects \[\to \] Snakes
  done clear
  C)
   Plankton \[\to \] Small fishes \[\to \] Large fishes
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer178) Which of the following enzyme helps in digesting protein in stomach?
  A)
   Trypsin          
  done clear
  B)
   Pepsin
  done clear
  C)
   Ptyalin           
  done clear
  D)
   Rennin
  done clear
  View Answer play_arrow

• question_answer179) The Leydig cells secrete
  A)
   estrogen         
  done clear
  B)
   testosterone
  done clear
  C)
   progesterone     
  done clear
  D)
   cortisol
  done clear
  View Answer play_arrow

• question_answer180) Which one of the following is not a biofertilizer?
  A)
   Bacillus thuringiensis
  done clear
  B)
   Azotobacter
  done clear
  C)
    Azolla
  done clear
  D)
   Clostridium
  done clear
  View Answer play_arrow

• question_answer181) In India hot spot area is found in
  A)
   Western Himalaya
  done clear
  B)
   Tropical Andes
  done clear
  C)
   Madagascar
  done clear
  D)
   Mesoamerica
  done clear
  View Answer play_arrow

• question_answer182) The thalloid body of a slime mould (Myxomycetes) is known as
  A)
   protonema      
  done clear
  B)
   plasmodium
  done clear
  C)
   fruiting body    
  done clear
  D)
   mycelium
  done clear
  View Answer play_arrow

• question_answer183) A normal woman whose father was a colour blind person is married to a normal man. Her  sons would likely to be
  A)
   75% colourblind
  done clear
  B)
   50% colourblind                                
  done clear
  C)
   All normal      
  done clear
  D)
   All colourblind
  done clear
  View Answer play_arrow

• question_answer184) Which of the following is not a function of liver?
  A)
   Production of bile
  done clear
  B)
   Production of insulin
  done clear
  C)
   Glycogen storage
  done clear
  D)
   Detoxification
  done clear
  View Answer play_arrow

• question_answer185) The vital capacity of human lung is equal to
  A)
   500 mL        
  done clear
  B)
   4600 mL
  done clear
  C)
   5800 mL       
  done clear
  D)
   2300 Ml
  done clear
  View Answer play_arrow

• question_answer186) Wavelength of visibile light/PAR is
  A)
   200-400 nm    
  done clear
  B)
   700-900 nm
  done clear
  C)
   400-700 nm    
  done clear
  D)
   100-200 nm
  done clear
  View Answer play_arrow

• question_answer187) During day time sound level in silent zone is
  A)
   50 dB          
  done clear
  B)
   70 dB
  done clear
  C)
   20 dB          
  done clear
  D)
   40 dB
  done clear
  View Answer play_arrow

• question_answer188) DNA can be formed by
  A)
   transaminase
  done clear
  B)
   lyases
  done clear
  C)
   RNA dependent DNA polymerase
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer189) A cell active in protein synthesis will rich in
  A)
   ribosomes      
  done clear
  B)
   Golgi bodies
  done clear
  C)
   mitochondria    
  done clear
  D)
   lysosomes
  done clear
  View Answer play_arrow

• question_answer190) The RNA primer is used in
  A)
   translation      
  done clear
  B)
   replication
  done clear
  C)
   conjugation      
  done clear
  D)
   transformation
  done clear
  View Answer play_arrow

• question_answer191) The yellow colour of urine is caused by
  A)
   urochrome      
  done clear
  B)
   bilirubin
  done clear
  C)
   Biliverdin 
  done clear
  D)
   xanthophylls
  done clear
  View Answer play_arrow

• question_answer192) The number of species classified in Species Plantarum
  A)
   5900          
  done clear
  B)
   6000
  done clear
  C)
   4000           
  done clear
  D)
   3800
  done clear
  View Answer play_arrow

• question_answer193) Sigmoid notch is formed by
  A)
   cavity formed by humerus
  done clear
  B)
   cavity formed by radio-ulna
  done clear
  C)
   cavity formed by tibio-fibula
  done clear
  D)
   cavity formed by femur
  done clear
  View Answer play_arrow

• question_answer194) The term innominate is related with
  A)
   nerve           
  done clear
  B)
   artery
  done clear
  C)
   skeleton         
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer195) Meselson Stahl experiment on semi- conservative replication demonstrates that
  A)
   50% radioactive, 50% non-radioactive
  done clear
  B)
   50% non-radioactive
  done clear
  C)
   50% radioactive
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer196) Characteristic cells of Hydra are
  A)
   archeocytes     
  done clear
  B)
   thesocytes
  done clear
  C)
   cnidoblasts      
  done clear
  D)
   trophocytes
  done clear
  View Answer play_arrow

• question_answer197) An acoelomate animal with bilateral symmetry is
  A)
   Hydra          
  done clear
  B)
   Liver fluke
  done clear
  C)
   Physalia         
  done clear
  D)
   Obelia
  done clear
  View Answer play_arrow

• question_answer198) The opening of auricles and ventricle on the right side is guarded by
  A)
   tricuspid valve   
  done clear
  B)
   bicuspid valve
  done clear
  C)
   semilunar valve  
  done clear
  D)
   eustachian tube
  done clear
  View Answer play_arrow

• question_answer199) In \[{{F}_{2}}\]-generation, quantitation  inheritance 1 : 4 : 6 : 4 : 1 is obtained instead of
  A)
   9 : 3 : 3 : 1      
  done clear
  B)
   8 : 6 : 4 :  1
  done clear
  C)
   7 : 4 : 1 : 4      
  done clear
  D)
   6 : 6 : 4 : 7
  done clear
  View Answer play_arrow

• question_answer200) Incomplete dominance is shown by
  A)
   Primrose        
  done clear
  B)
   Mirabilis
  done clear
  C)
   Helianthus      
  done clear
  D)
   China rose
  done clear
  View Answer play_arrow