Solved papers for NEET AIPMT SOLVED PAPER MAINS 2011

done AIPMT SOLVED PAPER MAINS 2011 Total Questions - 120

• question_answer1) Two identical piano wires kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase in the tension of one of the wires which will lead to occurrence of 6 beat/s when both the wires oscillate together would be
  A)
   0.02      
  done clear
  B)
   0.03      
  done clear
  C)
   0.04      
  done clear
  D)
   0.01
  done clear
  View Answer play_arrow

• question_answer2) In the following figure, the diodes which are forward biased, are

  [A]         [B]                        [C]                       [D]

   
  A)
   C only                  
  done clear
  B)
   C and A               
  done clear
  C)
   B and D         
  done clear
  D)
   A, B and D
  done clear
  View Answer play_arrow

• question_answer3) The threshold frequency for a photo-sensitive metal is 3.3 x1014 Hz. If light of frequency 8.2 x 1014 Hz is incident on this metal, the cut-off voltage for the photo-electric emission is nearly          
  A)
   2 V                        
  done clear
  B)
   3 V                        
  done clear
  C)
   5 V                        
  done clear
  D)
   1 V
  done clear
  View Answer play_arrow

• question_answer4) A galvanometer of resistance, G is shunted by a resistance S ohm. To keep the main current in the circuit unchanged, the resistance to be put in series with the galvanometer is                          
  A)
  \[\frac{{{S}^{2}}}{(S+G)}\]          
  done clear
  B)
  \[\frac{SG}{(S+G)}\]      
  done clear
  C)
  \[\frac{{{G}^{2}}}{(S+G)}\]         
  done clear
  D)
  \[\frac{G}{(S+G)}\]
  done clear
  View Answer play_arrow

• question_answer5) A square loop, carrying a steady current \[\text{I}\], is placed in a horizontal plane near a long straight conductor carrying a steady current \[{{\text{I}}_{\text{1}}}\]at a distance d from the conductor as shown in figure. The loop will experience
  A)
   a net repulsive force away from the conductor
  done clear
  B)
   a net torque acting upward perpendicular to the horizontal plane
  done clear
  C)
   a net torque acting downward normal to the horizontal plane
  done clear
  D)
   a net attractive force towards the conductor
  done clear
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• question_answer6) A thermocouple of negligible resistance, produces an emf of \[\text{40 }\!\!\mu\!\!\text{ V}{{\text{/}}^{\text{o}}}\text{C}\]in the linear range of temperature. A galvanometer of resistance \[10\,\Omega \]whose sensitivity is\[\text{1 }\!\!\mu\!\!\text{ A/div}\], is employed with the thermocouple. The smallest value of temperature difference that can be detected by the system will be
  A)
   \[{{0.5}^{o}}C\]
  done clear
  B)
   \[{{1}^{o}}C\]
  done clear
  C)
   \[{{0.1}^{o}}C\]
  done clear
  D)
   \[{{0.25}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer7) The rms value of potential difference V shown in the figure is
  A)
  \[{{\text{V}}_{\text{0}}}\]                          
  done clear
  B)
  \[\frac{{{V}_{0}}}{\sqrt{2}}\]                      
  done clear
  C)
  \[\frac{{{V}_{0}}}{2}\]                   
  done clear
  D)
  \[\frac{{{V}_{0}}}{\sqrt{3}}\]
  done clear
  View Answer play_arrow

• question_answer8) A coil has resistance \[30\,\Omega \] and inductive reactance \[20\,\Omega \]at 50 Hz frequency. If an AC source of 200 V, 100 Hz, is connected across the coil, the current in the coil will be                
  A)
   4.0 A    
  done clear
  B)
   8.0 A    
  done clear
  C)
  \[\frac{20}{\sqrt{12}}A\]              
  done clear
  D)
   2.0 A
  done clear
  View Answer play_arrow

• question_answer9) A particle of mass m is thrown upwards from the surface of die earth, with a velocity u. The mass and the radius of the earth are, respectively, M and R. G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of u so that the particle does not return back to earth, is
  A)
  \[\sqrt{\frac{2GM}{R}}\]             
  done clear
  B)
  \[\sqrt{\frac{2GM}{{{R}^{2}}}}\]              
  done clear
  C)
  \[\sqrt{2g{{R}^{2}}}\]    
  done clear
  D)
  \[\sqrt{\frac{2GM}{{{R}^{2}}}}\]
  done clear
  View Answer play_arrow

• question_answer10) Pure Si at 500 K has equal number of electron \[({{n}_{e}})\] and   hole  \[({{n}_{h}})\] concentrations   of \[1.5\times {{10}^{16}}{{m}^{-3}}\]. Doping by indium increases nh to \[4.5\times {{10}^{22}}{{m}^{-3}}\]. The doped semiconductor is of       
  A)
   p-type   with   electron   concentration \[{{n}_{e}}=5\times {{10}^{22}}\,{{m}^{-3}}\]
  done clear
  B)
   p-type   with   electron   concentration \[{{n}_{e}}=2.5\times {{10}^{10}}\,{{m}^{-3}}\]
  done clear
  C)
   n-type   with   electron   concentration \[{{n}_{e}}=2.5\times {{10}^{23}}\,{{m}^{-3}}\]
  done clear
  D)
   p-type having electron  concentration \[{{n}_{e}}=5\times {{10}^{9}}\,{{m}^{-3}}\]
  done clear
  View Answer play_arrow

• question_answer11) Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency f Hz. The magnitude of magnetic induction at the centre of the ring is              
  A)
  \[\frac{{{\mu }_{0}}qf}{2R}\]     
  done clear
  B)
  \[\frac{{{\mu }_{0}}q}{2f\,R}\]  
  done clear
  C)
  \[\frac{{{\mu }_{0}}q}{2\pi f\,R}\]           
  done clear
  D)
  \[\frac{{{\mu }_{0}}qf}{2\pi R}\]
  done clear
  View Answer play_arrow

• question_answer12) A zener diode, having breakdown voltage equal to 15 V, is used in a voltage regulator circuit shown in figure. The current through the diode is                                                                                      
  A)
   10 mA                 
  done clear
  B)
   15 mA 
  done clear
  C)
   20 mA                 
  done clear
  D)
   5 mA
  done clear
  View Answer play_arrow

• question_answer13) A particle covers half of its total distance with speed \[{{v}_{1}}\], and the rest half distance with speed \[{{v}_{2}}\], Its average speed during the complete journey is                                                                
  A)
   \[\frac{{{v}_{1}}{{v}_{2}}}{{{v}_{1}}+{{v}_{2}}}\]              
  done clear
  B)
  \[\frac{2{{v}_{1}}{{v}_{2}}}{{{v}_{1}}+{{v}_{2}}}\]             
  done clear
  C)
  \[\frac{2v_{1}^{2}v_{2}^{2}}{v_{1}^{2}+v_{2}^{2}}\]      
  done clear
  D)
  \[\frac{{{v}_{1}}+{{v}_{2}}}{2}\]
  done clear
  View Answer play_arrow

• question_answer14) The electric potential V at any point (.x, y, z), all in metres in space is given by V = 4x2 volt. The electric field at the point (1, 0, 2) in volt/metre is                                                                
  A)
   8 along positive X-axis
  done clear
  B)
   16 along negative X-axis
  done clear
  C)
   16 along positive X-axis
  done clear
  D)
   8 along negative X-axis
  done clear
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• question_answer15) A short bar magnet of magnetic moment \[0.4J\,{{T}^{-1}}\]is place in a uniform magnetic field of 0.16 T. The magnet is stable equilibrium when the potential energy is                                                           
  A)
   -0.64J                  
  done clear
  B)
   zero                     
  done clear
  C)
   - 0.082 J        
  done clear
  D)
   0.064 J
  done clear
  View Answer play_arrow

• question_answer16) A thin prism of angle \[15{}^\circ \] made of glass of refractive index \[{{\mu }_{1}}=1.5\] is combined with another prism of glass of refractive index \[{{\mu }_{2}}=1.75.\]The combination of the prism produces dispersion without deviation. The angle of the second prism should be        
  A)
   \[{{7}^{o}}\]                     
  done clear
  B)
   \[{{10}^{o}}\]
  done clear
  C)
   \[{{12}^{o}}\]
  done clear
  D)
   \[5{}^\circ \]
  done clear
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• question_answer17) A conveyor belt is moving at a constant speed of 2 m/s. A box is gently dropped on it. The coefficient of friction between them is \[\mu =0.5.\]The distance that the box will move relative to belt before coming to rest on it taking \[g=10\,\,m{{s}^{-2}},\]is                                            
  A)
   1.2 m                   
  done clear
  B)
   0.6 m   
  done clear
  C)
   zero                     
  done clear
  D)
   0.4 m
  done clear
  View Answer play_arrow

• question_answer18) A mass of diatomic gas (y = 1.4) at a pressure of 2 atm is compressed adiabatically so that its temperature rise from \[27{}^\circ \] C to\[927{}^\circ \text{ }C\]. The pressure of the gas is final state is                            
  A)
   28 atm                
  done clear
  B)
   68.7 atm             
  done clear
  C)
   256 atm        
  done clear
  D)
   8 atm
  done clear
  View Answer play_arrow

• question_answer19) A mass m moving horizontally (along the x-axis) with velocity v collides and sticks to mass of 3m moving vertically upward (along the y-axis) with velocity 2v. The final velocity of the combination is
  A)
  \[\frac{1}{4}v\mathbf{\hat{i}}+\frac{3}{2}v\mathbf{\hat{j}}\]   
  done clear
  B)
  \[\frac{1}{3}v\mathbf{\hat{i}}+\frac{2}{3}v\mathbf{\hat{j}}\]   
  done clear
  C)
  \[\frac{2}{3}v\mathbf{\hat{i}}+\frac{1}{3}v\mathbf{\hat{j}}\]   
  done clear
  D)
  \[\frac{3}{2}v\mathbf{\hat{i}}+\frac{1}{4}v\mathbf{\hat{j}}\]
  done clear
  View Answer play_arrow

• question_answer20) Two particle are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite directions when their displacement is half of the amplitude. The mean positions of the two particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is                                                            
  A)
   zero                     
  done clear
  B)
  \[\frac{2\pi }{3}\]                            
  done clear
  C)
  \[\pi \]                 
  done clear
  D)
  \[\frac{\pi }{6}\]
  done clear
  View Answer play_arrow

• question_answer21) A small mass attached to a string rotates on frictionless table top as shown. If the tension is the string is increased by pulling the string causing the radius of the circular motion to decrease by a factor of 2, the kinetic energy of the mass will                        
  A)
   remain constant
  done clear
  B)
   increase by a factor of 2
  done clear
  C)
   increase by a factor of 4
  done clear
  D)
   decrease by a factor of 2
  done clear
  View Answer play_arrow

• question_answer22) The density of material in CGS system of units is\[4g/c{{m}^{3}}\]. In a system of units in which unit of lengths is 10 cm and unit of mass is 100 g, the value of density of material will be'                              
  A)
   0.4                        
  done clear
  B)
   40                         
  done clear
  C)
   400       
  done clear
  D)
   0.04                     
  done clear
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• question_answer23)     An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength   so   emitted   illuminates   a photo-sensitive material having work function 2.75 eV. If the stopping potential of the photo-electron is 10 V, the value of n is
  A)
   3                            
  done clear
  B)
   4                            
  done clear
  C)
   5                            
  done clear
  D)
   2
  done clear
  View Answer play_arrow

• question_answer24) A particle of mass M is situated at the centre of spherical shell of mass and radius a. The magnitude of the gravitational potential at a point situated at \[\frac{a}{2}\] distance from the centre, will be  
  A)
  \[\frac{2GM}{a}\]           
  done clear
  B)
  \[\frac{3GM}{a}\]           
  done clear
  C)
  \[\frac{4GM}{a}\]           
  done clear
  D)
  \[\frac{GM}{a}\]
  done clear
  View Answer play_arrow

• question_answer25) Two radioactive nuclei P and Q, in a given sample decay into a stable nucleous R. At time t = 0, number of P species are 4No and that of Q are \[{{N}_{0}}\] Half-life of P (for conversion to K) is 1 min where as that of Q is 2 min. Initially there are no nuclei of R present in the sample. When number of nuclei of P and Q are equal, the number of nuclei of R present in the sample would be                                           
  A)
  \[\text{3}{{\text{N}}_{\text{0}}}\]                          
  done clear
  B)
  \[\frac{\text{9}{{\text{N}}_{\text{0}}}}{\text{2}}\]          
  done clear
  C)
  \[\frac{\text{5}{{\text{N}}_{\text{0}}}}{\text{2}}\]                          
  done clear
  D)
  \[\text{2}{{\text{N}}_{\text{0}}}\]
  done clear
  View Answer play_arrow

• question_answer26) A projectile is fired at an angle of \[45{}^\circ \] with the horizontal. Elevation angle of the projectile at its highest point as seen from the point of projection is                                                                  
  A)
   \[\text{6}{{\text{0}}^{\text{o}}}\]                          
  done clear
  B)
  \[{{\tan }^{-1}}\left( \frac{1}{2} \right)\]               
  done clear
  C)
   \[{{\tan }^{-1}}\left( \frac{\sqrt{3}}{2} \right)\]
  done clear
  D)
  \[\text{4}{{\text{5}}^{\text{o}}}\]
  done clear
  View Answer play_arrow

• question_answer27) Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's atomic model?
  A)
   1.9 eV          
  done clear
  B)
   11.1 eV               
  done clear
  C)
   13.6 eV               
  done clear
  D)
   0.65 eV
  done clear
  View Answer play_arrow

• question_answer28) In the circuit shown in the figure, if potential, at point A is taken to be zero, the potential at point B is
  A)
   - 1 V                     
  done clear
  B)
   + 2 V    
  done clear
  C)
   - 2 V                     
  done clear
  D)
   + 1 V
  done clear
  View Answer play_arrow

• question_answer29) A conversing beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point 15 cm from the lens on the opposite side. If the lens is removed the point where the rays meets will move 5 cm closer to the lens. The focal length of the lens is                            
  A)
   -10 cm                 
  done clear
  B)
   20 cm  
  done clear
  C)
   -30 cm                 
  done clear
  D)
   5 cm
  done clear
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• question_answer30) Three charges, each + q, are placed at the comers of an isosceles triangle ABC of sides BE and AC, 2a. D and£ are the mid points of BE and CA. The work done in taking a charge Q from D to E is
  A)
  \[\frac{eqQ}{8\pi {{\varepsilon }_{0}}a}\]            
  done clear
  B)
  \[\frac{qQ}{4\pi {{\varepsilon }_{0}}a}\]               
  done clear
  C)
   zero                     
  done clear
  D)
  \[\frac{3qQ}{4\pi {{\varepsilon }_{0}}a}\]
  done clear
  View Answer play_arrow

• question_answer31) Which of the following is not a fat soluble vitamin?
  A)
   Vitamin-B complex        
  done clear
  B)
   Vitamin-D
  done clear
  C)
   Vitamin-E                          
  done clear
  D)
   Vitamin-A
  done clear
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• question_answer32) Which of the statements about 'Denaturation' given below are correct? Statements

  [A] Denaturation of proteins causes loss of secondary and tertiary structures of the protein.

  [B] Denaturation leads to the conversion of double strand of DNA into single strand.

  [C] Denaturation affects primary structure which gets distroyed.

  A)
   [B] and [C]        
  done clear
  B)
   [A] and [C]
  done clear
  C)
   [A] and [B]        
  done clear
  D)
   [A], [B] and [C]
  done clear
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• question_answer33) Which has the maximum number of molecules among the following?  
  A)
  \[\text{44}\,\text{g}\,\text{C}{{\text{O}}_{\text{2}}}\] 
  done clear
  B)
  \[\text{48}\,\text{g}\,{{\text{O}}_{3}}\]               
  done clear
  C)
  \[\text{8}\,\text{g}\,{{\text{H}}_{\text{2}}}\]    
  done clear
  D)
  \[\text{64}\,\text{g}\,\text{S}{{\text{O}}_{\text{2}}}\]
  done clear
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• question_answer34) The half-life of a substance in a certain enzyme-catalyses reaction is 138 s. The time required for the concentration of the substance to fall from 1.28 mg \[{{\text{L}}^{\text{-1}}}\] to 0.04 mg \[{{\text{L}}^{\text{-1}}}\] is                    
  A)
   414 s                    
  done clear
  B)
   552 s    
  done clear
  C)
   690 s                    
  done clear
  D)
   276 s
  done clear
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• question_answer35) Which of the following compounds undergoes nucleophilic substitution reaction most easily?
  A)
   
  done clear
  B)
  
  done clear
  C)
                                  
  done clear
  D)
   
  done clear
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• question_answer36) Which of the following statements is incorrect?
  A)
   Pure sodium metal dissolves in liquid ammonia to give blue solution
  done clear
  B)
   NaOH reacts with glass to give sodium silicate
  done clear
  C)
   Aluminium, reacts with excess NaOH to give \[Al{{(OH)}_{3}}\]
  done clear
  D)
   \[NaHC{{O}_{3}}\] on heating gives\[N{{a}_{2}}C{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer37) A 0.1 molal aqueous solution of a weak acid is 30% ionised. If \[{{K}_{f}}\] for water is\[1.86{}^\circ C/m\], the freezing point of the solution will be
  A)
   \[-0.18{}^\circ C\]          
  done clear
  B)
   \[-0.54{}^\circ C\]          
  done clear
  C)
   \[-0.36{}^\circ C\]         
  done clear
  D)
   \[-0.24{}^\circ C\]
  done clear
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• question_answer38) The rate of reaction \[2{{N}_{2}}{{O}_{5}}\xrightarrow[{}]{{}}4N{{O}_{2}}+{{O}_{2}}\]can be written in three ways \[\frac{-d[{{N}_{2}}{{O}_{5}}]}{dt}=k[{{N}_{2}}{{O}_{5}}]\] \[\frac{d[NO_{7}^{2}]}{dt}=k'[{{N}_{2}}{{O}_{5}}]\]\[\frac{d[O_{2}^{{}}]}{dt}=k''[{{N}_{2}}{{O}_{5}}]\]                                                   The relationship between k and k' and between k?? and k'' are
  A)
   k? = 2 k; k? = k   
  done clear
  B)
   k? = 2k; k??=k/2
  done clear
  C)
   k? = 2k; k?? = 2k
  done clear
  D)
   k? = k; k?? = k
  done clear
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• question_answer39) Which of the following carbonyls will have the strongest C-O bond?
  A)
  \[\text{Mn(CO)}_{\text{6}}^{\text{+}}\]             
  done clear
  B)
  \[\text{Cr(CO)}_{\text{6}}^{{}}\]             
  done clear
  C)
  \[\text{V(CO)}_{\text{6}}^{-}\]
  done clear
  D)
  \[\text{Fe(CO)}_{5}^{{}}\]
  done clear
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• question_answer40) The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds                                         
  A)
  \[\text{III}\,\text{}\,\text{II}\,\text{}\,\text{I}\]              
  done clear
  B)
  \[\text{II}\,\text{}\,\text{II}\,\text{}\,\text{III}\]             
  done clear
  C)
  \[\text{I}\,\text{}\,\text{III}\,\text{}\,\text{II}\]              
  done clear
  D)
  \[\text{I}\,\text{}\,\text{II}\,\text{}\,\text{III}\]
  done clear
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• question_answer41) The IUPAC name of the following compound      is
  A)
   trans-2-chloro-3-iodo-2-pentene
  done clear
  B)
   cis-3-iodo-4-chloro-3-pentene
  done clear
  C)
   rrans-3-iodo-4-chloro-3-pentene
  done clear
  D)
   cis-2-chloro-3-iodo-2-pentene
  done clear
  View Answer play_arrow

• question_answer42) According to the Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?
  A)
   n = 6 to n = 1    
  done clear
  B)
   n = 5 to n = 4
  done clear
  C)
   n = 6 to n = 5    
  done clear
  D)
   n = 5 ton = 3
  done clear
  View Answer play_arrow

• question_answer43) A solid compound XY has \[NaCl\] structure. If the radius of the cation is 100 pm, the radius of the anion \[({{Y}^{-}})\] will be  
  A)
   275.1pm             
  done clear
  B)
   322.5 pm            
  done clear
  C)
   241.5 pm      
  done clear
  D)
   165.7 pm
  done clear
  View Answer play_arrow

• question_answer44) Consider the following processes

  \[\text{ }\!\!\Delta\!\!\text{ H}\,\text{(kJ/}\,\text{mol)}\]
  \[1/2A\to B\]	+ 150
  \[3B\to 2C+D\]	- 125
  \[E+A\to 2D\]	+ 350

  For\[B+D\to E+2C,\Delta H\]will be
  A)
   525 kJ/mol        
  done clear
  B)
   - 175 kJ/mol
  done clear
  C)
   -325 kJ/mol       
  done clear
  D)
   325 kJ/mol
  done clear
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• question_answer45) Match the compounds given in list I with list II and select the suitable option using the code given belows.

  List-I	List-II
  A. Benzaldehyde	1. Phenolphthalein
  B. Phthalic anhydride	2. Benzoin condensation
  C. Phenyl benzoate	3. Oil wintergreen
  D. Methyl salicylate	4. Fries rearrangement

  Code
  A)
  A-4         B-1         C-3         D-2
  done clear
  B)
  A-4         B-2         C-3         D-1
  done clear
  C)
  A-2         B-3         C-4         D-1
  done clear
  D)
  A-2         B-1         C-4         D-3
  done clear
  View Answer play_arrow

• question_answer46) Which of the following compound is most basic?              
  A)
                                              
  done clear
  B)
   
  done clear
  C)
                                              
  done clear
  D)
   
  done clear
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• question_answer47) Which of the following structures is the most preferred and hence of lowest energy for \[S{{O}_{3}}\]?
  A)
                                           
  done clear
  B)
   
  done clear
  C)
                                             
  done clear
  D)
   
  done clear
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• question_answer48) A solution contains \[F{{e}^{2+}},F{{e}^{3+}}\]and \[{{\text{I}}^{-}}\] ions. This solution was treated with iodine at\[35{}^\circ C\]. \[E{}^\circ \] for \[F{{e}^{3+}}/F{{e}^{2+}}\]is + 0.77 V and \[E{}^\circ \] for \[{{\text{I}}_{\text{2}}}\text{/2}{{\text{I}}^{-}}=\text{0}\text{.536}\,\text{V}\text{.}\]The favorable redox reaction is               
  A)
  \[{{\text{I}}_{\text{2}}}\] will be reduced to \[{{\text{I}}^{-}}\]
  done clear
  B)
   There will be no redox reaction
  done clear
  C)
  \[{{\text{I}}^{-}}\] will be oxidised to \[{{\text{I}}_{\text{2}}}\]
  done clear
  D)
   \[\text{F}{{\text{e}}^{\text{2+}}}\]will be oxidised to \[\text{F}{{\text{e}}^{\text{3+}}}\]
  done clear
  View Answer play_arrow

• question_answer49) What is the value of electron gain enthalpy of    \[\text{N}{{\text{a}}^{\text{+}}}\]if \[\text{I}{{\text{F}}_{\text{1}}}\]of Na = 5.1 eV?
  A)
   -5.1 eV
  done clear
  B)
   -10.2 Ev              
  done clear
  C)
   = 2.55 eV           
  done clear
  D)
   + 10.2 eV
  done clear
  View Answer play_arrow

• question_answer50) The unit of rate constant for- a zero order reaction is
  A)
  \[\text{mol}\,{{\text{L}}^{\text{-1}}}\,{{\text{s}}^{\text{-1}}}\]
  done clear
  B)
  \[\text{L}\,\text{mo}{{\text{l}}^{\text{-1}}}\,{{\text{s}}^{\text{-1}}}\]  
  done clear
  C)
  \[{{\text{L}}^{\text{2}}}\,\text{mo}{{\text{l}}^{\text{-2}}}\,{{\text{s}}^{\text{-1}}}\]     
  done clear
  D)
  \[\,{{\text{s}}^{\text{-1}}}\]
  done clear
  View Answer play_arrow

• question_answer51) In qualitative analysis, the metals of group I can be separated from other ions by precipitating them as chloride salts. A solution initially contains \[A{{g}^{+}}\] and \[P{{b}^{2+}}\] at a concentration of 0.10 M. Aqueous HCl is added to this solution until the \[C{{l}^{-}}\] concentration is 0.10 M. What will be the concentration of \[A{{g}^{+}}\] and \[P{{b}^{2+}}\] be at equilibrium? (\[{{K}_{sp}}\]for \[AgCl=1.8\times {{10}^{-10}},\,\,{{K}_{sp}}\] for\[\text{PbC}{{\text{l}}_{\text{2}}}\text{=1}\text{.7 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-5}}}\])
  A)
  \[[A{{g}^{+}}]=1.8\times {{10}^{-7}}M;[P{{b}^{2+}}]=1.7\times {{10}^{-6}}M\]
  done clear
  B)
  \[[A{{g}^{+}}]=1.8\times {{10}^{-11}}M;[P{{b}^{2+}}]=8.5\times {{10}^{-5}}M\]
  done clear
  C)
  \[[A{{g}^{+}}]=1.8\times {{10}^{-9}}M;[P{{b}^{2+}}]=1.7\times {{10}^{-3}}M\]
  done clear
  D)
  \[[A{{g}^{+}}]=1.8\times {{10}^{-11}}M;[P{{b}^{2+}}]=8.5\times {{10}^{-4}}M\]
  done clear
  View Answer play_arrow

• question_answer52) A bubble of air is underwater at temperature \[15{}^\circ C\] and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is \[25{}^\circ C\] and the pressure is 1.0 bar, what will happen to the volume of the bubble?                                                                               
  A)
   Volume will become greater by a factor of 1.6
  done clear
  B)
   Volume will become greater by a factor of 1.1
  done clear
  C)
   Volume will become smaller by a factor of 0.70
  done clear
  D)
   Volume will become greater by a factor of 2.9
  done clear
  View Answer play_arrow

• question_answer53) Match list I with list II for the compositions of substances and select the correct answer using the code given below the lists.  

  List I(Substances)	List II(Composition)
  A. Plaster of Pairs	1.\[CaS{{O}_{4}}\cdot 2{{H}_{2}}O\]
  B. Epsomite	2.\[CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O\]
  C. Kieserite	3.\[MgS{{O}_{4}}\cdot 7{{H}_{2}}O\]
  D. Gypsum	4.\[MgS{{O}_{4}}\cdot {{H}_{2}}O\]
  	5.\[CaS{{O}_{4}}\]

  A)
  A-3         B-4         C-1         D-2
  done clear
  B)
  A-2         B-3         C-4         D-1
  done clear
  C)
  A-1         B-2         C-3         D-5
  done clear
  D)
  A-4         B-3         C-2         D-1
  done clear
  View Answer play_arrow

• question_answer54) The pairs of species of oxygen and their magnetic behaviors are noted below. Which of the following presents the correct description?    
  A)
   \[\text{O}_{2}^{-},\text{O}_{2}^{2-}\]Both diamagnetic               
  done clear
  B)
   \[{{O}^{+}},\,O_{2}^{2-}-\] Both paramagnetic             
  done clear
  C)
   \[O_{2}^{+},\,{{O}_{2}}-\] Both paramagnetic
  done clear
  D)
   \[\text{O}_{{}}^{{}},\text{O}_{2}^{2-}\]- Both paramagnetic
  done clear
  View Answer play_arrow

• question_answer55) Consider the reactions                                                 

  (i)\[{{(C{{H}_{3}})}_{2}}CH-C{{H}_{2}}Br\xrightarrow[{}]{{{C}_{2}}{{H}_{5}}OH}{{(C{{H}_{3}})}_{2}}CH\]\[-C{{H}_{2}}O{{C}_{2}}{{H}_{5}}+HBr\]

  (ii)\[{{(C{{H}_{3}})}_{2}}CH-C{{H}_{2}}Br\xrightarrow[{}]{{{C}_{2}}{{H}_{5}}{{O}^{-}}}{{(C{{H}_{3}})}_{2}}CH\]\[-C{{H}_{2}}O{{C}_{2}}{{H}_{5}}+B{{r}^{-}}\]

  The mechanisms of reactions CO and (ii) are respectively
  A)
  \[{{\text{S}}_{\text{N}}}\text{1}\,\text{and}\,{{\text{S}}_{\text{N}}}2\]                              
  done clear
  B)
  \[{{\text{S}}_{\text{N}}}\text{1}\,\text{and}\,{{\text{S}}_{\text{N}}}1\]
  done clear
  C)
  \[{{\text{S}}_{\text{N}}}2\,\text{and}\,{{\text{S}}_{\text{N}}}2\]                            
  done clear
  D)
  \[{{\text{S}}_{\text{N}}}2\,\text{and}\,{{\text{S}}_{\text{N}}}1\]
  done clear
  View Answer play_arrow

• question_answer56) Which of the following complex compounds will exhibit highest paramagnetic behaviour? \[(At.\,no.:Ti=22,Cr=24,Co=27,Zn=30)\]
  A)
  \[{{[Ti{{(N{{H}_{3}})}_{6}}]}^{3+}}\]        
  done clear
  B)
  \[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}\]
  done clear
  C)
  \[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\]      
  done clear
  D)
  \[{{[Zn{{(N{{H}_{3}})}_{6}}]}^{2+}}\]
  done clear
  View Answer play_arrow

• question_answer57) 200 mL of an aqueous solution of a protein contains its 1.26 g. The osmotic pressure of this solution at 300 K is found to be \[2.57\times {{10}^{-3}}\] bar. The molar mass of protein will be                    \[(R=0.083\,\,L\,\,bar\,\,mo{{l}^{-1}})\]
  A)
   \[51022\,\,g\,\,mo{{l}^{-1}}\]  
  done clear
  B)
   \[122044\,\,g\,\,mo{{l}^{-1}}\]
  done clear
  C)
   \[31011\,\,g\,\,mo{{l}^{-1}}\]                   
  done clear
  D)
   \[61038\,\,g\,\,mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer58) Which of the following oxide is amphoteric?      
  A)
   \[Sn{{O}_{2}}\]               
  done clear
  B)
   \[CaO\]                              
  done clear
  C)
   \[Si{{O}_{2}}\]                 
  done clear
  D)
   \[C{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer59) The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag.                                                      
  A)
  \[F{{e}_{2}}{{O}_{3}}(s)=3CO(g)\xrightarrow[{}]{{}}2Fe(l)+3C{{O}_{2}}(g)\]
  done clear
  B)
  \[CaC{{O}_{3}}(s)\xrightarrow[{}]{{}}CaO(s)+C{{O}_{2}}(g)\]
  done clear
  C)
  \[CaO(s)+Si{{O}_{2}}(s)\xrightarrow[{}]{{}}CaSi{{O}_{3}}(s)\]
  done clear
  D)
  \[2C(s)+{{O}_{2}}(g)\xrightarrow[{}]{{}}2CO(g)\]
  done clear
  View Answer play_arrow

• question_answer60) An organic compound 'A' on treatment with \[N{{H}_{3}}\] gives 'B' which on heating gives 'C' , 'C' when treated with \[B{{r}_{2}}\] in the presence of KOH produces ethylamine. Compound 'A' is 
  A)
  \[C{{H}_{3}}COOH\]                       
  done clear
  B)
  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH\]
  done clear
  C)
  \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,HCOOH\]       
  done clear
  D)
  \[C{{H}_{3}}C{{H}_{2}}COOH\]
  done clear
  View Answer play_arrow

• question_answer61) The technique called gamete intra fallopian transfer (GIFT) is recommended for those females
  A)
   who cannot produce an ovum
  done clear
  B)
   who cannot retain the foetus inside uterus
  done clear
  C)
   who cervical canal is too narrow to allow passage for the sperms
  done clear
  D)
   who cannot provide suitable  environmental  for fertilization
  done clear
  View Answer play_arrow

• question_answer62) Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort?
  A)
   One can breathe out air totally without oxygen
  done clear
  B)
   One can breathe out air through Eustachian tubes by closing both the nose and the mouth
  done clear
  C)
   One can consiously breathe in and breathe out by moving the diaphragm alone, without moving the ribs at all
  done clear
  D)
   The lungs can be made fully empty by forcefully breathing out all air from them
  done clear
  View Answer play_arrow

• question_answer63) Bacillus thuringiensis forms protein crystals, which contain insecticidal protein 
  A)
   binds with epithelial cells of midgut of the insect pest ultimately killing it
  done clear
  B)
   is coded by several genes including the gene cry       
  done clear
  C)
   is activated by acid of pH of the foregut of the insect pest                 
  done clear
  D)
   does not kill the carrier bacterium which is itself resistant to this toxin
  done clear
  View Answer play_arrow

• question_answer64) Which one of the following pairs is wrongly matched while the remaining three are correct?
  A)
   Penidllium          - Conidia
  done clear
  B)
   Water hyacinth                - Runner
  done clear
  C)
   Bryophyllum     - Leatbuds
  done clear
  D)
   Agave                                  - Bulbils
  done clear
  View Answer play_arrow

• question_answer65) Which one of the following diagrams represents the placentation in Dianthus? 
  A)
                                         
  done clear
  B)
  
  done clear
  C)
                                     
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer66) Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct?
  A)
   It is present only in larval tail in Ascidians
  done clear
  B)
   It is replaced by a vertebral column in adult frog
  done clear
  C)
   It is absent throughout life in humans from the very beginning
  done clear
  D)
   It is present throughout life in Amphioxus
  done clear
  View Answer play_arrow

• question_answer67) Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?   
  A)
   Sparrow             
  done clear
  B)
   Lion                      
  done clear
  C)
   Goat                    
  done clear
  D)
   Frog
  done clear
  View Answer play_arrow

• question_answer68) Both, hydrarch and xerarch successions lead to
  A)
   medium water conditions
  done clear
  B)
   xeric conditions
  done clear
  C)
   highly dry conditions
  done clear
  D)
   excessive wet conditions
  done clear
  View Answer play_arrow

• question_answer69) What happens during fertilization in humans after many sperms reach close to the ovum?
  A)
   Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida
  done clear
  B)
   All sperms except the one nearest to the ovum lose their tails
  done clear
  C)
   Cells of corona radiata trap all the sperms except one
  done clear
  D)
   Only two sperms nearest the ovum penetrate zona pellucida
  done clear
  View Answer play_arrow

• question_answer70) About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH surge) normally occurs?
  A)
   14th day        
  done clear
  B)
   20th day              
  done clear
  C)
   5th day                 
  done clear
  D)
   11th day
  done clear
  View Answer play_arrow

• question_answer71) The cells lining the blood vessels belong to the category of  
  A)
   smooth muscle tissue
  done clear
  B)
   squamous epithelium
  done clear
  C)
   columnar epithelium
  done clear
  D)
   connective tissue
  done clear
  View Answer play_arrow

• question_answer72) The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of
  A)
   Taenia, a tapeworm
  done clear
  B)
   Wuchereria, a filarial worm
  done clear
  C)
   Rhizopus, a mould
  done clear
  D)
   Ascaras, a round worm
  done clear
  View Answer play_arrow

• question_answer73) The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D). Select the part correctly matched with its function.                                                          
  A)
  D-Outer membrane-gives-rise to inner membrane by splitting
  done clear
  B)
  B-Inner membrane-forms infolding called cristae
  done clear
  C)
   C-Cristae-possess single circular DNA molecule and ribosomes
  done clear
  D)
   A-Matrix-major site for respiratory chain enzymes
  done clear
  View Answer play_arrow

• question_answer74) Read the following statement having two blanks (1 and 2). A drug used for...... (1)...... patients is obtained from a species of the organism...... (2)....... The one correct option for the two blanks is.
  A)

  Blank-1	Blank-2
  Heart	Penicillium

  done clear
  B)

  Blank-1	Blank-2
  Organ-transplant	Trichoderma

  done clear
  C)

  Blank-1	Blank-2
  Swine flu	Monascus

  done clear
  D)

  Blank-1	Blank-2
  AIDS	Pseudomonas

  done clear
  View Answer play_arrow

• question_answer75) Silencing of mRNA has been used in producing transgenic plants resistant to
  A)
   bollworms         
  done clear
  B)
   nematodes
  done clear
  C)
   white rusts      
  done clear
  D)
   bacterial blights
  done clear
  View Answer play_arrow

• question_answer76) At metaphase, chromosomes are attached to the spindle fibres by their              
  A)
   satellites                   
  done clear
  B)
   secondary constrictions
  done clear
  C)
   kinetochores   
  done clear
  D)
   centromere
  done clear
  View Answer play_arrow

• question_answer77) Consider the following statements (I-IV) about organic farming

  I. Utilizes genetically modified crops like Bt cotton

  II. Uses only naturally produced inputs like compost

  III. Does not use pesticides and urea

  IV. Produces vegetables rich in vitamins and minerals

  Which of the above statements are correct?
  A)
   (II), CIII) and (IV)            
  done clear
  B)
   (III) and (IV) only
  done clear
  C)
   (II) and (III) only             
  done clear
  D)
   and (II) only
  done clear
  View Answer play_arrow

• question_answer78) One-of the constituents of the pancreatic juice while poured into the duodenum in humans, is
  A)
   trypsinogen     
  done clear
  B)
   chymotrypsin
  done clear
  C)
   trypsin                                
  done clear
  D)
   enterokinase
  done clear
  View Answer play_arrow

• question_answer79) Frogs differ from humans in possessing                
  A)
   paired, cerebral hemispheres
  done clear
  B)
   hepatic portal system
  done clear
  C)
   nucleated red blood cells
  done clear
  D)
   thyroid as well as parathyroid
  done clear
  View Answer play_arrow

• question_answer80) Which one of the following option gives the correct matching of a disease with its causative organism and mode of infection?
  A)

  Disease	Gausative Organisms	Mode of Infection
  Typhoid	Salmonella typhi	With inspired air

  done clear
  B)

  Disease	Gausative Organisms	Mode of Infection
  Pneumonia	Sreptococcus pneumonia	Droplet infection

  done clear
  C)

  Disease	Gausative Organisms	Mode of Infection
  Elephantiasis	Wuchereria bancrofti	Infected water and food

  done clear
  D)

  Disease	Gausative Organisms	Mode of Infection
  Malaria	Plasmodium vivax	Bite of male Anopheles mosquito

  done clear
  View Answer play_arrow

• question_answer81) Function of companion cells is                                   
  A)
   providing energy to sieve elements for active transport
  done clear
  B)
   providing water to phloem
  done clear
  C)
   loading of sucrose in to sieve elements by passive transport
  done clear
  D)
   loading of sucrose into sieve elements
  done clear
  View Answer play_arrow

• question_answer82) Test cross in plants of in Drosophila involves crossing     
  A)
   between two genotypes with recessive trait
  done clear
  B)
   between two \[{{\text{F}}_{\text{1}}}\]hybrids
  done clear
  C)
   the \[{{\text{F}}_{\text{1}}}\] hybrid with a double recessive genotype
  done clear
  D)
   between two genotypes with dominant trait.
  done clear
  View Answer play_arrow

• question_answer83) Some vascular bundles are described as open because these
  A)
   are surrounded by pericycle but to endodermis
  done clear
  B)
   are capable of producing secondary xylem and phloem
  done clear
  C)
   possess conjunctive tissue between xylem and phloem
  done clear
  D)
   are not surrounded by pericycle
  done clear
  View Answer play_arrow

• question_answer84) In mitochondria, protons accumulate in the        
  A)
   outer membrane           
  done clear
  B)
   inner membrane
  done clear
  C)
   inter membrane space
  done clear
  D)
   matrix   
  done clear
  View Answer play_arrow

• question_answer85) The breakdown of detritus into smaller particles by earthworm is a process called
  A)
   humification    
  done clear
  B)
   fragmentation
  done clear
  C)
   mineralisation                 
  done clear
  D)
   catabolism
  done clear
  View Answer play_arrow

• question_answer86) Whorled, simple leaves with reticulate venation are present in
  A)
   Calotropis          
  done clear
  B)
   Neem
  done clear
  C)
   China rose         
  done clear
  D)
   Aktonia
  done clear
  View Answer play_arrow

• question_answer87) Sweet potato is homolgous to                                  
  A)
   potato                
  done clear
  B)
   colocasia
  done clear
  C)
   ginger                                 
  done clear
  D)
   turnip
  done clear
  View Answer play_arrow

• question_answer88) The unequivocal proof of DNA as the genetic material came from the studies on a
  A)
   bacterium         
  done clear
  B)
   fungus
  done clear
  C)
   viroid                                   
  done clear
  D)
   bacterial virus
  done clear
  View Answer play_arrow

• question_answer89) Consider the following four statements whether they are correct of wrong.

  I. The sporophyte in liverworts is more elaborate than that in mosses

  II. Satvinia is heterosporous

  III. The life-cycle in all seed-bearing plants is diplontic

  IV. In Pinus male and female cones are borne on different tress

  A)
   Statements (I) and (III)                             
  done clear
  B)
   Statements (I) and (IV)                           
  done clear
  C)
   Statements (II) and (III)
  done clear
  D)
   Statements (I) and (II)
  done clear
  View Answer play_arrow

• question_answer90) Consider the following four statements (I-IV) related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F).                      

  I. On dry land it would die due to lack of \[{{O}_{2}}\]its mouth is forcibly kept closed for a few days.

  II. It has four-chambered heart.

  III. On day land it turns uricotelic from ureotelic.

  IV. Its life-history is carried out in pond water.

  A)
  I-T           II-F         III-F        IV-T
  done clear
  B)
  I-T           II-T         III-F        IV-F
  done clear
  C)
  I-F           II-F         III-T        IV-T
  done clear
  D)
  I-F           II-T         III-T        IV-F
  done clear
  View Answer play_arrow

• question_answer91) In Kranz anatomy, the bundle sheath cells have               
  A)
   thin walls, many intercellular spaces and no chloroplasts
  done clear
  B)
   thick walls, no intercellular spaces and large number of chloroplasts
  done clear
  C)
   thin walls, no intercellular spaces and several chloroplasts
  done clear
  D)
   thick walls, many intercellular space and few chloroplasts           
  done clear
  View Answer play_arrow

• question_answer92) Given below is the ECG or a normal human. Which one of its components is human, which one of its components is correctly interpreted below.                      
  A)
   complex QRS-One complete pulse
  done clear
  B)
   peak T-Initiation  of  total  cardiac contraction
  done clear
  C)
   peak P and peak R together-systolic and diastolic blood pressures
  done clear
  D)
   peak P-Initiation of left atrial contraction only
  done clear
  View Answer play_arrow

• question_answer93) Which one of the following structures in Pheretima is correctly matched with its function?
  A)
   Clitellum             - Secretes cocoon
  done clear
  B)
   Gizzard                - Absorbs digested food
  done clear
  C)
   Setae   - Defence against predators
  done clear
  D)
   Typhlosole         - Storage of extra nutrients
  done clear
  View Answer play_arrow

• question_answer94) Selaginella and Salvinia are considered to represent a significant step towards evolution of seed habit because 
  A)
   female gametophyte is free and gets dispersed like seeds
  done clear
  B)
   female gametophyte lacks archegonia
  done clear
  C)
   magaspores possess endosperm and embryo surrounded by seed coat
  done clear
  D)
   embryo develops in female gametophyte which is retained on parent sporophyte
  done clear
  View Answer play_arrow

• question_answer95) Bulk of carbon dioxide \[(C{{O}_{2}})\]released from body tissues into the blood is present as  
  A)
   bicarbonate in blood plasma and RBCs
  done clear
  B)
   free \[C{{O}_{2}}\] in blood plasma
  done clear
  C)
   70% carbamino-haemoglobin and 30% as bicarbonate
  done clear
  D)
   carbamino-haemoglobin in RBCs
  done clear
  View Answer play_arrow

• question_answer96) In angiosperms, functional megaspore develops into
  A)
   embryo sac       
  done clear
  B)
   ovule
  done clear
  C)
   endosperm     
  done clear
  D)
   pollen sac
  done clear
  View Answer play_arrow

• question_answer97) Consider the following statements (I)-(IV) each with one or two blanks.

  I. Bears go into......(1)...... during winter to ......(2)...... cold weather.

  II. A conical age pyramid with a broad base represents...... (3)...... human population.

  III. A wasp pollinating a fig flower is an example of...... (4)...... .

  IV. An area with high levels of species richness is known as ...... (5).......

  Which one of the following options give the correct fill up the respective blanks numbers from (1) to (5) in the statements.
  A)
   (2) stable, (4) commensalism, (5)- marsh
  done clear
  B)
   (1) aestivation, (5) escape, (3) stable, (4) mutualism
  done clear
  C)
   (3)   expanding,   (4)   commensalism, (5) biodiversity park
  done clear
  D)
   (1) hibernation, (2) escape, (3) expanding, (5) hot spot
  done clear
  View Answer play_arrow

• question_answer98) What is common between vegetative reproduction and apomixis?
  A)
   Both are applicable to only dicot plants
  done clear
  B)
   Both bypass the flowering phase
  done clear
  C)
   Both occur round the year
  done clear
  D)
   Both produces progeny identical to the parent
  done clear
  View Answer play_arrow

• question_answer99) Common cold is not cured by antibiotics because it is
  A)
   caused by a virus
  done clear
  B)
   caused by a Gram positive bacterium
  done clear
  C)
   caused by a Gram negative bacterium
  done clear
  D)
   not an infectious disease
  done clear
  View Answer play_arrow

• question_answer100) Which one of the following is not an essential mineral elements for plants while the remaining three are?
  A)
   Iron                                      
  done clear
  B)
   Manganese
  done clear
  C)
   Cadmium                           
  done clear
  D)
   Phosphorus
  done clear
  View Answer play_arrow

• question_answer101) Biodiversity of a geographical region represents               
  A)
   endangered species found in the region
  done clear
  B)
   the diversity in the organism living in the region
  done clear
  C)
   genetic diversity present in the dominant species of the region
  done clear
  D)
   species endemic to the region
  done clear
  View Answer play_arrow

• question_answer102) Which one of the following is not considered as a part of the endomembrane system?
  A)
   Golgi complex                 
  done clear
  B)
   Peroxisome
  done clear
  C)
   Vacuole                              
  done clear
  D)
   Lysosome
  done clear
  View Answer play_arrow

• question_answer103)                 Which one of the following correctly represents the normal adult human dental formula?
  A)
  \[\frac{3}{3},\frac{1}{1},\frac{3}{2},\frac{1}{1}\]                
  done clear
  B)
  \[\frac{2}{2},\frac{1}{1},\frac{3}{2},\frac{3}{3}\]
  done clear
  C)
  \[\frac{2}{2},\frac{1}{1},\frac{2}{2},\frac{3}{3}\]                
  done clear
  D)
  \[\frac{3}{3},\frac{1}{1},\frac{3}{3},\frac{3}{3}\]
  done clear
  View Answer play_arrow

• question_answer104) Select the correct statements with respect to diseases and immunization
  A)
  if due to some reason B and T-lymphocytes are damaged, the body will not produce antibodies against a pathogen
  done clear
  B)
   injection of dead/inactivated pathogens causes passive immunity
  done clear
  C)
   certain protozoans have been used to mass produce hepatitis B vaccine
  done clear
  D)
   injection of 'snake anti venom against snake bite is an example .of active immunization
  done clear
  View Answer play_arrow

• question_answer105) The figure shows four animals [A], [B], [C], [D]. Select the correct answer with respect to a common characteristics of two these animals.

  (A)               (B)                   (C)                     (D)

   
  A)
   [A] and [D] respire mainly through body wall
  done clear
  B)
   [B] and [C] show radial symmetry
  done clear
  C)
   [A] and [B] have cnidoblasts for self-defense
  done clear
  D)
   [C] and [D] have a true coelom
  done clear
  View Answer play_arrow

• question_answer106) In history of biology, human genome project led to the development of              
  A)
   biotechnology                 
  done clear
  B)
   bio monitoring
  done clear
  C)
   bioinformatics                 
  done clear
  D)
   biosystematics
  done clear
  View Answer play_arrow

• question_answer107) Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?               
  A)
   Two X-chromosomes
  done clear
  B)
   Only one Y-chromosome
  done clear
  C)
   Only one X-chromosome
  done clear
  D)
   One X and one Y-chromosome
  done clear
  View Answer play_arrow

• question_answer108) Which one of the following is essential for photolysis of water?
  A)
   Manganese     
  done clear
  B)
   Zinc
  done clear
  C)
   Copper                               
  done clear
  D)
   Boron
  done clear
  View Answer play_arrow

• question_answer109) Which one of the following techniques made it possible to genetically engineer living organism?
  A)
   Recombinant DNA techniques
  done clear
  B)
   X-ray diffraction
  done clear
  C)
   Heavier isotope labelling
  done clear
  D)
   Hybridization
  done clear
  View Answer play_arrow

• question_answer110) Urethras act as urogenital ducts in                          
  A)
   human males   
  done clear
  B)
   human females
  done clear
  C)
   frog's both males and females
  done clear
  D)
   frog's males
  done clear
  View Answer play_arrow

• question_answer111) The type of muscles present in-our                        
  A)
   heart are involuntary and un striated smooth muscles
  done clear
  B)
   intestine are striated and involuntary
  done clear
  C)
   thigh are striated and voluntary
  done clear
  D)
   upper arm are smooth muscle fibres fusiform in shape
  done clear
  View Answer play_arrow

• question_answer112) Read the following four statements (I-IV) about certain mistakes in two of them             

  I. the first transgenic buffalo, Rosie produced milk which was human alpha-lactal bumin enriched.

  II. restriction enzymes are used in isolation of DNA from other macro-molecules.

  III. downstream processing is one of the steps of R-DNA technology.

  IV. disarmed pathogen vectors are also used in transfer of R-DNA into the host.

  Which are the two statements having mistakes?
  A)
   Statements (II) and (III)
  done clear
  B)
   Statements (III) and (IV)
  done clear
  C)
   Statements (I) and (III)
  done clear
  D)
   Statements (I) and (II)
  done clear
  View Answer play_arrow

• question_answer113) The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone
  A)
   calcitonin           
  done clear
  B)
   prolactin
  done clear
  C)
   adrenaline        
  done clear
  D)
   melatonin
  done clear
  View Answer play_arrow

• question_answer114) Guttation is the result of                                             
  A)
   diffusion            
  done clear
  B)
   transpiration
  done clear
  C)
   osmosis              
  done clear
  D)
   root pressure
  done clear
  View Answer play_arrow

• question_answer115) Examine the figure below and select the right option giving all the four parts A, B, C and D correctly identified.      
  A)

  A	B	C	D
  Archegoni ophore	Female thallus	Gemma cup	Rhizoids

  done clear
  B)

  A	B	C	D
  Archegoni ophore	Female thallus	Bud	Foot

  done clear
  C)

  A	B	C	D
  Seta	Sporophyte	Protonema	Rhizoids

  done clear
  D)

  A	B	C	D
  Antheridio phore	Male thallus	Globule	Roots

  done clear
  View Answer play_arrow

• question_answer116) Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair.  
  A)

  Pairs of skeletal parts	Category
  Sternum and ribs	Axial skeleton

  done clear
  B)

  Pairs of skeletal parts	Category
  Clavicle and glenoid	Pelvic girdle

  done clear
  C)

  Pairs of skeletal parts	Category
  Humerus and ulna	Appendicular skeleton

  done clear
  D)

  Pairs of skeletal parts	Category
  Malleus and stapes	Ear ossicles

  done clear
  View Answer play_arrow

• question_answer117) Which one of the following aspects is an exclusive characteristic of living things?                              
  A)
   Isolated metabolic reactions occur in vitro
  done clear
  B)
   Increase in mass from inside only
  done clear
  C)
   Perception of events happening in the environment and their memory
  done clear
  D)
   Increase in mass by accumulation of material both on surface as well as internally
  done clear
  View Answer play_arrow

• question_answer118) Good ozone is found in the                                        
  A)
   mesosphere                    
  done clear
  B)
   troposphere
  done clear
  C)
   stratosphere                    
  done clear
  D)
   ionosphere
  done clear
  View Answer play_arrow

• question_answer119) Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?
  A)
   Yeast                                    - statins
  done clear
  B)
   Acetobacter aceti           - acid
  done clear
  C)
   Clostridium butulicum   - lactic acid
  done clear
  D)
   Aspergillus niger                              - citric acid
  done clear
  View Answer play_arrow

• question_answer120) The logistic population growth is expressed by the equation
  A)
  \[dt/dN=Nr\left( \frac{K-N}{K} \right)\]
  done clear
  B)
  \[dN/dt=rN\left( \frac{K-N}{K} \right)\]
  done clear
  C)
  \[dN/dt=rN\]
  done clear
  D)
  \[dN/dt=rN\left( \frac{N-K}{N} \right)\]
  done clear
  View Answer play_arrow