question_answer 1) A simple pendulum of length \[l\] has a maximum angular displacement\[\theta \]. The Maximum kinetic energy of the bob is: [BHU M-2003]
A)
\[\text{mgl}\left( \text{1}-\text{cos }\theta \right)\]
done
clear
B)
\[\text{0}\text{.5}\,\text{mgl}\]
done
clear
C)
\[\text{mgl}\]
done
clear
D)
\[\text{2}\,\text{mgl}\]
done
clear
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question_answer 2) Radius of orbit of satellite of earth is R. Its Kinetic energy is proportional to: [BHU M-2003]
A)
\[\frac{1}{R}\]
done
clear
B)
\[\frac{1}{\sqrt{R}}\]
done
clear
C)
\[R\]
done
clear
D)
\[\frac{1}{{{R}^{3/2}}}\]
done
clear
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question_answer 3) The radius \[R\] of the soap bubble is doubled under isothermal condition. If \[T\] be the surface tension of soap bubble, the work done in doing so is given by: [BHU M-2003]
A)
\[32\pi {{R}^{2}}\,T\]
done
clear
B)
\[24\pi {{R}^{2}}\,T\]
done
clear
C)
\[8\pi {{R}^{2}}\,T\]
done
clear
D)
\[4\pi {{R}^{2}}\,T\]
done
clear
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question_answer 4) A body of specific heat \[0.\text{2 kcal}/\text{k}{{\text{g}}^{\circ }}\,C\] is heated through\[{{100}^{\circ }}\,C\]. The percentage increase in its mass is: [BHU M-2003]
A)
\[\text{9 }%\]
done
clear
B)
\[\text{9}\text{.3}\times \text{1}{{\text{0}}^{-11}}\text{ }%\]
done
clear
C)
\[\text{10 }%\]
done
clear
D)
\[\text{None of these}\]
done
clear
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question_answer 5) Two similar coils are kept mutually perpendicular such that their centers coincide. At the center, find the ratio of the magnetic field due to one coil and the resultant magnetic field through both coils, if the same current is flown: [BHU M-2003]
A)
\[1:\sqrt{2}\]
done
clear
B)
\[1:2\]
done
clear
C)
\[1:2\]
done
clear
D)
\[\sqrt{3}:1\]
done
clear
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question_answer 6) A prism of refractive index \[\sqrt{2}\] has refracting angle of \[{{60}^{\circ }}\]. At what angle a ray must be incident on it that it suffers a minimum deviation? [BHU M-2003]
A)
\[{{45}^{\circ }}\]
done
clear
B)
\[{{60}^{\circ }}\]
done
clear
C)
\[{{90}^{\circ }}\]
done
clear
D)
\[{{180}^{\circ }}\]
done
clear
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question_answer 7) A cone filled with water is revolved in a vertical circle of radius 4 m and the water does not fall down. What must be the maximum period of revolution? [BHU M-2003]
A)
\[2\,\,s\]
done
clear
B)
\[4\,\,s\]
done
clear
C)
\[1\,\,s\]
done
clear
D)
\[6\,\,s\]
done
clear
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question_answer 8) A conducting sphere of radius \[R=20\,\,cm\] is given a charge\[Q=16\,\,\mu C\]. What is \[\overset{\to }{\mathop{E}}\,\] at its center? [BHU M-2003]
A)
\[3.6\times {{10}^{6}}\,\,N/C\]
done
clear
B)
\[1.8\times {{10}^{6}}\,\,N/C\]
done
clear
C)
\[Zero\]
done
clear
D)
\[0.9\times {{10}^{6}}\,\,N/C\]
done
clear
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question_answer 9)
A coil having \[N\] turns carry a current as shown in the figure. The magnetic field intensity at point \[P\] is: [BHU M-2003]
A)
\[\frac{{{\mu }_{0}}Ni{{R}^{2}}}{2{{\left( {{R}^{2}}+{{x}^{2}} \right)}^{3/2}}}\]
done
clear
B)
\[\frac{{{\mu }_{0}}Ni}{2\,R}\]
done
clear
C)
\[\frac{{{\mu }_{0}}Ni{{R}^{2}}}{{{\left( R+x \right)}^{2}}}\]
done
clear
D)
\[Zero\]
done
clear
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question_answer 10) The maximum range of a gun on horizontal terrain is \[16\,\,km\] if\[g=10\,\,m/{{s}^{2}}\]. What must be the muzzle velocity of the shell? [BHU M-2003]
A)
\[200\,\,m/s\]
done
clear
B)
\[100\,\,m/s\]
done
clear
C)
\[400\,\,m/s\]
done
clear
D)
\[300\,\,m/s\]
done
clear
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question_answer 11) The length, breadth and thickness of a block are given by \[l=12\,\,cm\], \[b=6\,cm\] and \[t=2.45\,\,cm\]. The volume of the block according to the idea of significant figures should be: [BHU M-2003]
A)
\[1\times {{10}^{2}}\,\,c{{m}^{3}}\]
done
clear
B)
\[2\times {{10}^{2}}\,\,c{{m}^{3}}\]
done
clear
C)
\[1.763\times {{10}^{2}}\,\,c{{m}^{3}}\]
done
clear
D)
none of the above
done
clear
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question_answer 12) Five particles of mass \[2\,kg\] are attached to the rim of a circular disc mass radius 0.1 m and negligible mass. Moment of inertia of the system about the axis passing through the center of the disc and perpendicular to its plane is: [BHU M-2003]
A)
\[1\,\,kg\,\,{{m}^{2}}\]
done
clear
B)
\[0.1\,\,kg\,\,{{m}^{2}}\]
done
clear
C)
\[2\,\,kg\,\,{{m}^{2}}\]
done
clear
D)
\[0.2\,\,kg\,\,{{m}^{2}}\]
done
clear
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question_answer 13) The radius of the convex surface of plan convex lens is 20 cm and the refractive index of the material of the lens is 1.5. The focal length is: [BHU M-2003]
A)
\[30\,\,\,cm\]
done
clear
B)
\[50\,\,\,cm\]
done
clear
C)
\[20\,\,\,cm\]
done
clear
D)
\[25\,\,\,cm\]
done
clear
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question_answer 14) An ice-cube of density \[900\,\,kg/{{m}^{3}}\] is floating in water of density\[1000\,\,kg/{{m}^{3}}\]. The percentage of volume of ice-cube outside the water is: [BHU M-2003]
A)
\[20\,%\]
done
clear
B)
\[35\,%\]
done
clear
C)
\[10\,\,%\]
done
clear
D)
\[25\,\,%\]
done
clear
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question_answer 15) A spherical shell of diameter \[0.2\,m\] and mass \[2\,\,kg\] is rolling on an inclined plane with velocity\[v=0.5\,\,m/s\]The kinetic energy of the sphere is: [BHU M-2003]
A)
\[0.1\,\,J\]
done
clear
B)
\[0.3\,\,J\]
done
clear
C)
\[0.5\,\,J\]
done
clear
D)
\[0.42\,\,J\]
done
clear
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question_answer 16) An electron moves at right angle to a magnetic field of \[1.5\times {{10}^{-2}}\,\,T\] with a speed of\[6\times {{10}^{7}}\,\,m/s\]. If the specific charge of the electron is \[1.7\times {{10}^{11}}\,coul/kg\], the radius of the circular path will be : [BHU M-2003]
A)
\[2.9\,\,cm\]
done
clear
B)
\[3.9\,\,cm\]
done
clear
C)
\[2.35\,\,cm\]
done
clear
D)
\[2\,\,cm\]
done
clear
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question_answer 17) If work function of a metal is \[4.2\,\,eV,\] the cut of wavelength is: [BHU M-2003]
A)
\[8000\,\overset{\circ }{\mathop{A}}\,\]
done
clear
B)
\[7000\,\overset{\circ }{\mathop{A}}\,\]
done
clear
C)
\[1472\,\overset{\circ }{\mathop{A}}\,\]
done
clear
D)
\[2950\,\overset{\circ }{\mathop{A}}\,\]
done
clear
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question_answer 18) A particle is executing motion as follows \[x=a\,\,\sin \left( \omega t-\theta \right).\] Then the maximum velocity of the particle is: [BHU M-2003]
A)
\[a\omega \,\,\cos \,\,\theta \]
done
clear
B)
\[a\omega \]
done
clear
C)
\[a\omega \,\,\sin \,\,\theta \]
done
clear
D)
\[\text{none of these}\]
done
clear
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question_answer 19) A particle is executing two different simple harmonic motions, mutually perpendicular of different amplitudes and having phase difference of \[\frac{\pi }{2}\]. The path of the particle will be : [BHU M-2003]
A)
Circular
done
clear
B)
Straight line
done
clear
C)
Parabolic
done
clear
D)
Elliptical
done
clear
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question_answer 20) Equations of motion in the same direction are given by: \[\begin{align} & {{y}_{1}}=2a\,\,\sin \left( \omega t-kx \right) \\ & {{y}_{2}}=2a\,\,\sin \left( \omega t-kx-\theta \right) \\ \end{align}\] The amplitude of the medium particle will be: [BHU M-2003]
A)
\[2a\,\,\cos \,\theta \]
done
clear
B)
\[\sqrt{2}a\,\,\cos \,\theta \]
done
clear
C)
\[4a\,\,\cos \,\frac{\theta }{2}\]
done
clear
D)
\[\sqrt{2}a\,\,\cos \,\frac{\theta }{2}\]
done
clear
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question_answer 21) The work function of sodium is\[2.3\,\,eV\]. The threshold wavelength of sodium will be: [BHU M-2003]
A)
\[2900\,\,\overset{\circ }{\mathop{\text{A}}}\,\]
done
clear
B)
\[2500\,\,\overset{\circ }{\mathop{\text{A}}}\,\]
done
clear
C)
\[5380\,\,\overset{\circ }{\mathop{\text{A}}}\,\]
done
clear
D)
\[1200\,\,\overset{\circ }{\mathop{\text{A}}}\,\]
done
clear
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question_answer 22)
The potential difference between points \[\text{A}\] and \[\text{B}\] is: [BHU M-2003]
A)
\[\frac{20}{7}V\]
done
clear
B)
\[\frac{40}{7}V\]
done
clear
C)
\[\frac{10}{7}V\]
done
clear
D)
Zero
done
clear
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question_answer 23) A short linear object of length \[b\] lies along the axis of a concave mirror of focal length \[f\] at a distance \[u\] from the pole of the mirror, what is the size of image? [BHU M-2003]
A)
\[\left( \frac{f}{u-f} \right)\,b\]
done
clear
B)
\[{{\left( \frac{f}{u-f} \right)}^{2}}\,b\]
done
clear
C)
\[\left( \frac{f}{u-f} \right)\,{{b}^{2}}\]
done
clear
D)
\[\left( \frac{f}{u-f} \right)\,\]
done
clear
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question_answer 24) A closed organ pipe and an open organ pipe are tuned to the same fundamental frequency. What is the ratio of their lengths? [BHU M-2003]
A)
\[1:3\]
done
clear
B)
\[2:1\]
done
clear
C)
\[2:3\]
done
clear
D)
\[4:3\]
done
clear
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question_answer 25)
When a certain current is passed in the circuit as shown in figure, \[10\,\,kcal\] of heat is produced in \[5\,\,\Omega \] resistance. How much heat is produced in \[4\,\,\Omega \] resistance? [BHU M-2003]
A)
\[4\,\text{kcal}\]
done
clear
B)
\[2\,\text{kcal}\]
done
clear
C)
\[5\,\text{kcal}\]
done
clear
D)
\[3\,\text{kcal}\]
done
clear
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question_answer 26) A steel scale measures the length of a copper wire as 80.0 cm, when both are at 20°C, the calibration temperature for the scale. What would the scale read for the length of the rod when both are at 40°C? Given: a for steel \[=11\times {{10}^{-6}}\]per \[^{\circ }C\] and a for \[\text{Cu=17}\times \text{1}{{\text{0}}^{-6}}\] per \[^{\circ }C.\] [BHU M-2003]
A)
\[80.0096\,\,cm\]
done
clear
B)
\[80.0272\,\,cm\]
done
clear
C)
\[1\,\,cm\]
done
clear
D)
\[25.2\,\,cm\]
done
clear
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question_answer 27) A tank is filled with water upto height H. When a hole is made at a distance h below the level of water, what will be the horizontal range of water jet? [BHU M-2003]
A)
\[2\sqrt{h\left( H-h \right)}\]
done
clear
B)
\[4\sqrt{h\left( H+h \right)}\]
done
clear
C)
\[4\sqrt{h\left( H-h \right)}\]
done
clear
D)
\[2\sqrt{h\left( H+h \right)}\]
done
clear
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question_answer 28) A raft of wood of mass 120 kg floats in water. The weight that can be put on the raft to make it just sink, should be \[{{d}_{raft}}=600\,\,kg/{{m}^{3}}.\]: [BHU M-2003]
A)
\[80\,\,kg\]
done
clear
B)
\[50\,\,kg\]
done
clear
C)
\[60\,\,kg\]
done
clear
D)
\[30\,\,kg\]
done
clear
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question_answer 29) A parade is kept at rest at the top of a sphere of diameter 42 m. When disturbed slightly, it slides down. At what height h from the bottom, the particle will leave the sphere? [BHU M-2003]
A)
\[14\,\,m\]
done
clear
B)
\[28\,\,m\]
done
clear
C)
\[35\,\,m\]
done
clear
D)
\[7\,\,m\]
done
clear
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question_answer 30) If an insulated non-conducting sphere of radius \[R\]has charge density\[\rho \], the electric field at a point just on the surface of Sphere is: [BHU M-2003]
A)
\[\frac{\rho R}{3{{\varepsilon }_{0}}}\]
done
clear
B)
\[\frac{\rho r}{{{\varepsilon }_{0}}}\]
done
clear
C)
\[\frac{\rho r}{3{{\varepsilon }_{0}}}\]
done
clear
D)
\[\frac{3\rho R}{{{\varepsilon }_{0}}}\]
done
clear
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question_answer 31) The minimum wavelength of X-ray emitted by X-ray tube is\[0.4125\,\,\overset{\circ }{\mathop{\text{A}}}\,\]. The accelerating voltage is: [BHU M-2003]
A)
\[30\,\,kV\]
done
clear
B)
\[50\,\,kV\]
done
clear
C)
\[80\,\,kV\]
done
clear
D)
\[60\,\,kV\]
done
clear
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question_answer 32) A monatomic gas supplied the heat Q very slowly keeping the pressure constant. The work done by the gas will be: [BHU M-2003]
A)
\[\frac{2}{3}Q\]
done
clear
B)
\[\frac{3}{5}Q\]
done
clear
C)
\[\frac{2}{5}Q\]
done
clear
D)
\[\frac{1}{5}Q\]
done
clear
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question_answer 33)
The refractive index of the material of the prism and liquid are 1.56 and 1.32 respectively. What will be the value of 9 for the following refraction? [BHU M-2003]
A)
\[\sin \,\theta \ge \frac{13}{11}\]
done
clear
B)
\[\sin \,\theta \ge \frac{11}{13}\]
done
clear
C)
\[\sin \,\theta \ge \frac{\sqrt{3}}{2}\]
done
clear
D)
\[\sin \,\theta \ge \frac{1}{\sqrt{2}}\]
done
clear
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question_answer 34) The temperature of the black body increases from T to 2T. The factor by which the rate of emission will increase is: [BHU M-2003]
A)
4
done
clear
B)
2
done
clear
C)
16
done
clear
D)
8
done
clear
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question_answer 35) A police jeep is chasing with velocity of 45 km/h a thief in another jeep moving with velocity 153km/h. Police fires a bullet with muzzle velocity of 180 m/s. The velocity it will strike the car of the thief is:[BHU M-2003]
A)
\[150\,\,m/s\]
done
clear
B)
\[27\,\,m/s\]
done
clear
C)
\[450\,\,m/s\]
done
clear
D)
\[250\,\,m/s\]
done
clear
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question_answer 36)
What should be the minimum value of refractive index of the material of the prism for the reflections to take place as shown in the figure? [BHU M-2003]
A)
\[1.7\]
done
clear
B)
\[1.4\]
done
clear
C)
\[1.2\]
done
clear
D)
\[2.7\]
done
clear
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question_answer 37) An L-C circuit is in the state of resonance. If\[C=0.1\,\,\mu F\]and\[L=0.25\,\,H\], neglecting ohmic resistance of circuit. What is the frequency of oscillations? [BHU M-2003]
A)
\[1007\,\,Hz\]
done
clear
B)
\[100\,\,Hz\]
done
clear
C)
\[109\,\,Hz\]
done
clear
D)
\[500\,\,Hz\]
done
clear
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question_answer 38) A person who can see things most clearly at a distance of 10 cm requires spectacles to enable to see clearly things at a distance of 30 cm. What should be the focal length of the spectacles? [BHU M-2003]
A)
15 cm (concave)
done
clear
B)
15 cm (convex)
done
clear
C)
10cm
done
clear
D)
Zero
done
clear
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question_answer 39) The dimensional formula for Young?s modulus is: [BHU M-2003]
A)
\[\left[ M{{L}^{-1}}{{T}^{-2}} \right]\]
done
clear
B)
\[\left[ {{M}^{0}}L{{T}^{-2}} \right]\]
done
clear
C)
\[\left[ ML{{T}^{-2}} \right]\]
done
clear
D)
\[\left[ M{{L}^{2}}{{T}^{-2}} \right]\]
done
clear
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question_answer 40) When temperature of an ideal gas is increased from 27°C to 277°C, its rms speed is changed from 400 m/s to\[{{v}_{s}}\]. The \[{{v}_{s}}\] is: [BHU M-2003]
A)
\[516\,\,m/s\]
done
clear
B)
\[450\,\,m/s\]
done
clear
C)
\[310\,\,m/s\]
done
clear
D)
\[746\,\,m/s\]
done
clear
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question_answer 41) A bar magnet of magnetic moment \[\overset{\to }{\mathop{M}}\,\]is placed in the magnetic field\[\overset{\to }{\mathop{B}}\,\]. The torque Acting on the magnet is: [BHU M-2003]
A)
\[\overset{\to }{\mathop{M\times }}\,\overset{\to }{\mathop{B}}\,\]
done
clear
B)
\[\overset{\to }{\mathop{M-}}\,\overset{\to }{\mathop{B}}\,\]
done
clear
C)
\[\frac{1}{2}\overset{\to }{\mathop{M\times }}\,\overset{\to }{\mathop{B}}\,\]
done
clear
D)
\[\overset{\to }{\mathop{M+}}\,\overset{\to }{\mathop{B}}\,\]
done
clear
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question_answer 42) A capacitor of capacitance \[6\,\,\mu F\] charged up to 100 V. The energy stored in the capacitor is: [BHU M-2003]
A)
\[0.6\,\,J\]
done
clear
B)
\[0.06\,\,J\]
done
clear
C)
\[0.03\,\,J\]
done
clear
D)
\[0.3\,\,J\]
done
clear
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question_answer 43) The radius of orbit of a planet is two times that of the earth. The time period of planet is: [BHU M-2003]
A)
4.2T years
done
clear
B)
2.8 T years
done
clear
C)
5.6Tyears
done
clear
D)
8.4Tyears
done
clear
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question_answer 44)
A body falls from a height h = 200 m. The ratio of distance travelled in each 2 s, during
A)
1: 4: 9
done
clear
B)
1: 2: 4
done
clear
C)
1: 3: 5
done
clear
D)
1: 2: 3
done
clear
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question_answer 45) To make the frequency double of a spring oscillator, we have to: [BHU M-2003]
A)
Reduce the mass to one fourth
done
clear
B)
Quadruple the mass
done
clear
C)
Double the mass
done
clear
D)
Half the mass
done
clear
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question_answer 46) A panicle executing SHM has amplitude 0.01 m and frequency 60 Hz. The maximum acceleration of particle is: [BHU M-2003]
A)
\[60\,{{\pi }^{2}}\,m/{{s}^{2}}\]
done
clear
B)
\[80\,{{\pi }^{2}}\,m/{{s}^{2}}\]
done
clear
C)
\[120\,{{\pi }^{2}}\,m/{{s}^{2}}\]
done
clear
D)
\[144\,{{\pi }^{2}}\,m/{{s}^{2}}\]
done
clear
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question_answer 47) When a wave travels in a medium the particles displacement is given by the equation \[y=0.03\,\,\sin \pi \left( 2t-0.01\,x \right)\]where x and y are in seconds. The wavelength of the wave is: [BHU M-2003]
A)
\[200\,\,m\]
done
clear
B)
\[100\,\,m\]
done
clear
C)
\[20\,\,m\]
done
clear
D)
\[10\,\,m\]
done
clear
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question_answer 48) If 300 mL of a gas at 27°C is cooled to 7°C at constant pressure, then its final volume will be: [BHU M-2003]
A)
\[540\,\,mL\]
done
clear
B)
\[350\,\,mL\]
done
clear
C)
\[280\,\,mL\]
done
clear
D)
\[135\,\,mL\]
done
clear
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question_answer 49)
Find the equivalent resistance between the points A and B. [BHU M-2003]
A)
\[2\,\Omega \]
done
clear
B)
\[4\,\Omega \]
done
clear
C)
\[8\,\Omega \]
done
clear
D)
\[16\,\Omega \]
done
clear
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question_answer 50) When sound waves travel from air to water, which one of the following remains constant? [BHU M-2003]
A)
Time period
done
clear
B)
Frequency
done
clear
C)
Velocity
done
clear
D)
Wavelength
done
clear
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question_answer 51) Graphite is soft while diamond is hard because:
A)
graphite is in powder form
done
clear
B)
diamond has\[s{{p}^{2}}\]hybridization but graphite has\[s{{p}^{3}}\]hybridization
done
clear
C)
graphite is in planar form while diamond is in tetrahedral form
done
clear
D)
graphite is covalent and diamond is ionic
done
clear
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question_answer 52) The pH of a\[{{10}^{-10}}M\text{ }NaOH\]solution is:
A)
10
done
clear
B)
7.01
done
clear
C)
6.99
done
clear
D)
4
done
clear
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question_answer 53) \[N{{a}_{2}}{{S}_{2}}{{O}_{3}}+12\xrightarrow{{}}Product\] is:
A)
\[N{{a}_{2}}S\]
done
clear
B)
\[N{{a}_{2}}S{{O}_{4}}\]
done
clear
C)
\[N{{a}_{2}}{{S}_{4}}{{O}_{6}}\]
done
clear
D)
\[{{S}_{2}}\]
done
clear
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question_answer 54) Phenol and benzoic acid are distinguished by:
A)
\[NaOH\]
done
clear
B)
\[NaHC{{O}_{3}}\]
done
clear
C)
\[Na\]
done
clear
D)
\[{{H}_{2}}S{{O}_{4}}\]
done
clear
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question_answer 55) \[{{H}_{2}}O\]is liquid while\[{{H}_{2}}S\]is a gas due to:
A)
covalent bonding
done
clear
B)
molecular attraction
done
clear
C)
H-bonding
done
clear
D)
both H-bonding and molecular attraction
done
clear
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question_answer 56) Phenol reacts with chloroform in presence of:
A)
\[{{H}_{2}}S{{O}_{4}}\]
done
clear
B)
\[KOH\]
done
clear
C)
\[NaN{{O}_{2}}/HCl\]
done
clear
D)
G.R.
done
clear
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question_answer 57) Frenkel and Schottky defects are:
A)
nucleus defects
done
clear
B)
non-crystal defects
done
clear
C)
crystal defects
done
clear
D)
nuclear defects
done
clear
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question_answer 58) \[C{{H}_{3}}C{{H}_{2}}C\equiv CH\xrightarrow[{}]{R}bu\tan one-2.\text{ }R\]is:
A)
\[H{{g}^{2+}}/dil.\,{{H}_{2}}S{{O}_{4}}\]
done
clear
B)
\[KMn{{O}_{4}}\]
done
clear
C)
\[KCl{{O}_{3}}\]
done
clear
D)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
clear
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question_answer 59) Which has minimum solubility?
A)
\[B{{i}_{2}}{{S}_{3}}\]
done
clear
B)
\[CoS\]
done
clear
C)
\[PbS\]
done
clear
D)
All have equal solubility
done
clear
View Answer play_arrow
question_answer 60) Ratio of molecular weights of A and B is \[\frac{4}{25}\] then ratio of rates of diffusion will be:
A)
5 : 1
done
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B)
5 : 2
done
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C)
25 : 3
done
clear
D)
25 : 4
done
clear
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question_answer 61) H-bond is strongest in:
A)
\[{{C}_{2}}{{H}_{5}}OH\]
done
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B)
\[HF\]
done
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C)
\[{{H}_{2}}O\]
done
clear
D)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
clear
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question_answer 62) Strongest nucleophile is:
A)
\[RN{{H}_{2}}\]
done
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B)
\[ROH\]
done
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C)
\[{{C}_{6}}{{H}_{5}}{{O}^{-}}\]
done
clear
D)
\[C{{H}_{3}}{{O}^{-}}\]
done
clear
View Answer play_arrow
question_answer 63) \[a/{{V}^{2}}\]given in van der Waals equation is for:
A)
internal pressure
done
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B)
inter molecular attraction
done
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C)
both and
done
clear
D)
temperature correction
done
clear
View Answer play_arrow
question_answer 64) The hardest substance is:
A)
iron
done
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B)
steel
done
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C)
diamond
done
clear
D)
graphite
done
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View Answer play_arrow
question_answer 65) Which of the following is wrong statement?
A)
\[Ni{{(CO)}_{4}}\] has oxidation number +4 for Ni
done
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B)
\[Ni{{(CO)}_{4}}\]has zero oxidation number for Ni
done
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C)
Ni is metal
done
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D)
CO is gas
done
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View Answer play_arrow
question_answer 66) Hybridization of 1 and 2 carbon atom in\[\overset{1}{\mathop{C}}\,{{H}_{2}}\text{ }=\overset{2}{\mathop{C}}\,=C{{H}_{2}}\]are:
A)
\[sp,\text{ }sp\]
done
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B)
\[s{{p}^{2}},\text{ }s{{p}^{2}}\]
done
clear
C)
\[s{{p}^{2}},\text{ }sp\]
done
clear
D)
\[s{{p}^{3}},\text{ }s{{p}^{2}}\]
done
clear
View Answer play_arrow
question_answer 67) In\[{{[NiC{{l}_{4}}]}^{2-}},\]the number of unpaired electrons, are:
A)
4
done
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B)
2
done
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C)
3
done
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D)
5
done
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question_answer 68) Which carbocation is most stable?
A)
\[C{{H}_{3}}CH_{2}^{+}\]
done
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B)
\[CH_{3}^{+}\]
done
clear
C)
\[{{C}_{6}}{{H}_{5}}CH_{2}^{+}\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}CH_{2}^{+}\]
done
clear
View Answer play_arrow
question_answer 69) \[\underset{\begin{smallmatrix}
| \\
C{{H}_{3}}
\end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,C{{H}_{3}}\xrightarrow{catalyst}C=\underset{\begin{smallmatrix}
| \\
C{{H}_{3}}
\end{smallmatrix}}{\mathop{CH}}\,\]
Number of optical isomer possible will be:
A)
2
done
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B)
4
done
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C)
0
done
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D)
3
done
clear
View Answer play_arrow
question_answer 70) \[{{C}_{(diamond)}}{{O}_{2}}\xrightarrow[{}]{{}}C{{O}_{2}};\]\[\Delta H=-395.4\,kJ/mol\] \[{{C}_{(graphite)}}+{{O}_{2}}\xrightarrow[{}]{{}}C{{O}_{2}}\Delta H;=-393.5\,kJ/mol\] \[{{C}_{(graphite)}}\xrightarrow[{}]{{}}{{C}_{(dia\operatorname{mo}nd)}};\Delta H=?:\]
A)
\[-3.8\]
done
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B)
\[-1.9\]
done
clear
C)
\[+3.8\]
done
clear
D)
\[+1.9\]
done
clear
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question_answer 71) The internal energy of a substance:
A)
decrease with increase in temperature
done
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B)
increase with increase in temperature
done
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C)
remains unaffected with change in temperature
done
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D)
calculated by\[E=m{{c}^{2}}\]
done
clear
View Answer play_arrow
question_answer 72) The rate constant of a reaction depends on:
A)
the temperature of a reaction
done
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B)
the time of a reaction
done
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C)
the extent of a reaction
done
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D)
the initial concentration of the reactant
done
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View Answer play_arrow
question_answer 73) The half-life of a radioactive element is 40 days. Calculate the average life:
A)
5.76 days
done
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B)
5 7.6 days
done
clear
C)
646 days
done
clear
D)
4.56 days
done
clear
View Answer play_arrow
question_answer 74) In an isothermal process:
A)
\[\Delta H=\Delta E+P\Delta V\]
done
clear
B)
\[\Delta H=W\]
done
clear
C)
\[\Delta H=\Delta E\]
done
clear
D)
\[\Delta H=S\Delta T\]
done
clear
View Answer play_arrow
question_answer 75) Number of orbitals in L energy level:
A)
1
done
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B)
2
done
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C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
question_answer 76) How much chlorine will be liberated on passing one ampere current for 30 min through\[NaCl\]solution?
A)
0.66 mol
done
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B)
0.33 mol
done
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C)
0.66g
done
clear
D)
0.33 g
done
clear
View Answer play_arrow
question_answer 77) \[{{H}_{2}}{{C}_{2}}{{O}_{4}}+KMn{{O}_{4}}\]in acidic medium reacts to have change in oxidation number of Mn from:
A)
7 to 5
done
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B)
2 to 7
done
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C)
5 to 7
done
clear
D)
7 to 2
done
clear
View Answer play_arrow
question_answer 78) When the temperature of an ideal gas is increased from\[27{}^\circ C\]to\[927{}^\circ C,\] the kinetic energy will be:
A)
same
done
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B)
eight times
done
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C)
four times
done
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D)
twice
done
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View Answer play_arrow
question_answer 79) Ratio of radii of second and first Bohr orbits of H atom is:
A)
2 : 1
done
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B)
4 : 1
done
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C)
3 : 1
done
clear
D)
5 : 1
done
clear
View Answer play_arrow
question_answer 80) India conducted an underground nuclear test at:
A)
Narora
done
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B)
Tarapur
done
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C)
Pushkar
done
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D)
Pokharan
done
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View Answer play_arrow
question_answer 81) Which is used as medicine?
A)
PVC
done
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B)
Terylene
done
clear
C)
Glyptal
done
clear
D)
Urotropine
done
clear
View Answer play_arrow
question_answer 82) \[NaOH/{{H}^{+}}\]reacts with:
A)
\[{{C}_{6}}{{H}_{5}}OC{{H}_{3}}\]
done
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B)
\[C{{H}_{3}}OH\]
done
clear
C)
\[C{{H}_{3}}\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,C{{H}_{3}}\]
done
clear
D)
\[{{C}_{2}}{{H}_{5}}OH\]
done
clear
View Answer play_arrow
question_answer 83) Butyne-1 and butyne-2 can be distinguished by:
A)
\[{{H}_{2}}S{{O}_{4}}\]
done
clear
B)
\[AgN{{O}_{3}}+N{{H}_{4}}OH\]
done
clear
C)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
clear
D)
\[N{{H}_{4}}OH\]
done
clear
View Answer play_arrow
question_answer 84) The incorrect configuration is:
A)
\[K=[Ar]4{{s}^{1}}\]
done
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B)
\[Cr=[Ar]3{{d}^{5}},4{{s}^{1}}\]
done
clear
C)
\[Cr=[Ar]3{{d}^{4}},4{{s}^{2}}\]
done
clear
D)
\[Cu=[Ar]3{{d}^{10}},4{{s}^{1}}\]
done
clear
View Answer play_arrow
question_answer 85) Which of the following compound gives iodo form test?
A)
\[C{{H}_{3}}CN\]
done
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B)
\[C{{H}_{3}}OH\]
done
clear
C)
\[C{{H}_{3}}COC{{H}_{3}}\]
done
clear
D)
\[{{C}_{6}}{{H}_{5}}OH\]
done
clear
View Answer play_arrow
question_answer 86) Dual nature of particle was given by:
A)
Bohr theory
done
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B)
Thomson model
done
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C)
Heisenberg principle
done
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D)
de-Broglie equation
done
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View Answer play_arrow
question_answer 87) \[NaOH(aq),~~HCl(aq),\]and \[NaCl(aq)\] concentration of each is\[{{10}^{-3}}M\]. Their pH will be respectively:
A)
10, 6, 2
done
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B)
11, 3, 7
done
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C)
10, 3, 7
done
clear
D)
10, 4, 7
done
clear
View Answer play_arrow
question_answer 88) Most acidic is:
A)
\[C{{H}_{3}}COOH\]
done
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B)
\[{{C}_{6}}{{H}_{5}}COOH\]
done
clear
C)
\[HCOOH\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}COOH\]
done
clear
View Answer play_arrow
question_answer 89) Substance having ester linkage is:
A)
bakelite
done
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B)
polythene
done
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C)
PVC
done
clear
D)
terylene
done
clear
View Answer play_arrow
question_answer 90) Carborundum is:
A)
\[A{{l}_{2}}{{O}_{3}}\]
done
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B)
\[AlC{{l}_{3}}\]
done
clear
C)
\[CuC{{O}_{3}}\]
done
clear
D)
\[SiC\]
done
clear
View Answer play_arrow
question_answer 91) Cryolite in aluminium extraction helps in:
A)
lowering the melting point
done
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B)
increasing the melting point
done
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C)
decreasing the electrical conductivity
done
clear
D)
none of the above
done
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View Answer play_arrow
question_answer 92) The values of standard oxidation potentials of following reactions are given below: (i) \[Zn\xrightarrow[{}]{{}}Z{{n}^{2+}}+2{{e}^{-}};{{E}^{o}}=0.762\,V\] (ii) \[Fe\xrightarrow[{}]{{}}F{{e}^{2+}}+2{{e}^{-}};{{E}^{o}}=0.440\,V\] (iii) \[Cu\xrightarrow[{}]{{}}C{{u}^{2+}}+2{{e}^{-}};{{E}^{o}}=-0.345\,V\] (iv) \[Ag\xrightarrow[{}]{{}}A{{g}^{+}}+{{e}^{-}};{{E}^{o}}=-0.800\,V\] Which of the following is most easily reduced?
A)
Fe
done
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B)
Ag
done
clear
C)
Zn
done
clear
D)
Cu
done
clear
View Answer play_arrow
question_answer 93) \[{{A}_{2}}(g)+{{B}_{2}}(g)2AB(g);\Delta H=+ve,\]It:
A)
increase by pressure
done
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B)
it occurs at 1000 atm pressure
done
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C)
it occurs at high temperature
done
clear
D)
it occurs at high pressure and temperature
done
clear
View Answer play_arrow
question_answer 94) Most stable carbanion is:
A)
\[CH_{3}^{-}\]
done
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B)
\[C{{H}_{3}}CH_{2}^{-}\]
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
question_answer 95) The number of\[\alpha \]and \[\beta \]particles emitted in the nuclear reaction\[_{90}T{{h}^{228}}{{\xrightarrow[{}]{{}}}_{83}}B{{i}^{212}}\]are:
A)
\[4\alpha \]and\[1\beta \]
done
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B)
\[3\alpha \]and\[7\beta \]
done
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C)
\[8\alpha \]and\[1\beta \]
done
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D)
\[4\alpha \]and\[7\beta \]
done
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View Answer play_arrow
question_answer 96) \[Isobutene\xrightarrow[Peroxide]{+HBr}product\]is:
A)
tertiary butyl bromide
done
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B)
isobutyl bromide
done
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C)
tertiary butyl alcohol
done
clear
D)
isobutyl alcohol
done
clear
View Answer play_arrow
question_answer 97) Isoelectronic species are:
A)
\[{{N}^{3-}},{{O}^{2-}}\]
done
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B)
\[N{{a}^{+}},C{{a}^{2+}}\]
done
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C)
\[{{O}^{2-}},{{C}^{2+}}\]
done
clear
D)
\[{{K}^{+}},N{{a}^{+}}\]
done
clear
View Answer play_arrow
question_answer 98) Correct order of polarising power is:
A)
\[C{{s}^{+}}<{{K}^{+}}<M{{g}^{2+}}<A{{l}^{3+}}\]
done
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B)
\[{{K}^{+}}<C{{s}^{+}}<M{{g}^{2+}}<A{{l}^{3+}}\]
done
clear
C)
\[C{{s}^{+}}<{{K}^{+}}<A{{l}^{3+}}<M{{g}^{2+}}\]
done
clear
D)
\[{{K}^{+}}<C{{s}^{+}}<A{{l}^{3+}}<M{{g}^{2+}}\]
done
clear
View Answer play_arrow
question_answer 99) \[C{{H}_{3}}COOH\]is formed by hydrolysis of:
A)
\[C{{H}_{3}}N{{H}_{2}}\]
done
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B)
\[C{{H}_{3}}CN\]
done
clear
C)
\[C{{H}_{3}}C{{H}_{2}}CN\]
done
clear
D)
\[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]
done
clear
View Answer play_arrow
question_answer 100) In Perkin reaction what is formed?
A)
Picric acid
done
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B)
Cinnamic acid
done
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C)
Butanoicacid
done
clear
D)
Benzoic acid
done
clear
View Answer play_arrow
question_answer 101) Secretion of gastric juice is stimulated by:
A)
pepsin
done
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B)
gastrin
done
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C)
renin
done
clear
D)
secrerin
done
clear
View Answer play_arrow
question_answer 102) Which one is not correct?
A)
Humans?Ureotelic
done
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B)
Birds?Uricotelic
done
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C)
Lizards?Uricotelic
done
clear
D)
Whale?Ammonotelic
done
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View Answer play_arrow
question_answer 103) Which one shows bio- luminescence ?
A)
Noctiluca
done
clear
B)
Polystomella
done
clear
C)
Entamoeba
done
clear
D)
Suctoria
done
clear
View Answer play_arrow
question_answer 104) Mantle, foot and shell are the characteristics of:
A)
Nautilus
done
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B)
Echinus
done
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C)
Limulus
done
clear
D)
Euplectella
done
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View Answer play_arrow
question_answer 105) Prodsts are: (i)unicellular and prokaryote (ii) unicellular and eukaryote (iii) mulricellular and eukaryote (iv) autotroph or heterotroph
A)
(i), (ii) and (iii)
done
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B)
(ii), (iii) and (iv)
done
clear
C)
(iii), (iv)
done
clear
D)
(ii). (iv)
done
clear
View Answer play_arrow
question_answer 106) Pepsin is inactivated at pH :
A)
below 3
done
clear
B)
below 2
done
clear
C)
above 5
done
clear
D)
above 3
done
clear
View Answer play_arrow
question_answer 107) Which one is not produced by aquaculrure ?
A)
Oyster
done
clear
B)
Silkworm
done
clear
C)
Singhara
done
clear
D)
Frog
done
clear
View Answer play_arrow
question_answer 108) Progesterone is secreted by :
A)
corpus luteum
done
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B)
uterus
done
clear
C)
placenta
done
clear
D)
graafian follicle
done
clear
View Answer play_arrow
question_answer 109) Which one affects liver, muscle and adipose tissue ?
A)
Androgen
done
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B)
Insulin
done
clear
C)
Progesterone
done
clear
D)
Glucagon
done
clear
View Answer play_arrow
question_answer 110) Inner lining of blood vessels is formed by :
A)
ciliated epithelium
done
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B)
squamous epithelium
done
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C)
cuboidal epithelium
done
clear
D)
columnar epithelium
done
clear
View Answer play_arrow
question_answer 111) Nucleated RBC is present in :
A)
man
done
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B)
rat
done
clear
C)
frog
done
clear
D)
rabbit
done
clear
View Answer play_arrow
question_answer 112) Pellagra is caused by deficiency of vitamin :
A)
B1
done
clear
B)
B2
done
clear
C)
B5
done
clear
D)
B6
done
clear
View Answer play_arrow
question_answer 113) The main excretory organ of prawn is :
A)
green gland
done
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B)
flame cell
done
clear
C)
Malpighian tubule
done
clear
D)
nephridia
done
clear
View Answer play_arrow
question_answer 114) Moulting hormone is secreted by :
A)
corpora cardiacum
done
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B)
prothoracic gland
done
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C)
corpora allata
done
clear
D)
neurosecretory hormone
done
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View Answer play_arrow
question_answer 115) Deoxyribonuc lease and ribonuclease are secreted by:
A)
liver
done
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B)
stomach
done
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C)
pancreas
done
clear
D)
kidney
done
clear
View Answer play_arrow
question_answer 116) Haemodialysis helps in patient having :
A)
uremia
done
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B)
anaemia
done
clear
C)
diabetes
done
clear
D)
goiter
done
clear
View Answer play_arrow
question_answer 117) X-rays are used in :
A)
ECG
done
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B)
EEG
done
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C)
CT-scan
done
clear
D)
Endoscopy
done
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View Answer play_arrow
question_answer 118) Disease caused by deficiency of protein in children is :
A)
obesity
done
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B)
marasmus
done
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C)
diabetes
done
clear
D)
kwashiorkor
done
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View Answer play_arrow
question_answer 119) The thin filaments of a muscle fibre are made up of:
A)
actin, troponin, tropomyosin
done
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B)
actin, troponin
done
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C)
myosin, troponin
done
clear
D)
actin. Tropomyosin
done
clear
View Answer play_arrow
question_answer 120) The species, which is going to become extinct due to lack of proper care would be called :
A)
rare
done
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B)
endangered
done
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C)
vulnerable
done
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D)
extinct
done
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View Answer play_arrow
question_answer 121) In which part of mitochondria does ATP synthesis occur ?
A)
F1
done
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B)
Fo
done
clear
C)
Cristae
done
clear
D)
Inner membrane of mitochondria
done
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View Answer play_arrow
question_answer 122) Abnormal growth of the tumour in cancer is due to :
A)
abnormal mitotic division
done
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B)
accumulation of body fluid
done
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C)
abnormal meiotic division
done
clear
D)
metastasis
done
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View Answer play_arrow
question_answer 123) Far, prior to its oxidation associate with :
A)
cyclic AMP
done
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B)
Co-A
done
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C)
GMP
done
clear
D)
ATP
done
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View Answer play_arrow
question_answer 124) Schwann cell is found around :
A)
axon
done
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B)
cyton
done
clear
C)
dendrite
done
clear
D)
dendron
done
clear
View Answer play_arrow
question_answer 125) Which part of retina consists of only cones ?
A)
Fovea centralis
done
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B)
Optic nerve
done
clear
C)
Blind spot
done
clear
D)
Orasmata
done
clear
View Answer play_arrow
question_answer 126) Heparin is secreted by :
A)
mast cell
done
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B)
alveolar cell
done
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C)
plasma cell
done
clear
D)
goblet cell
done
clear
View Answer play_arrow
question_answer 127) Antibody is produced by :
A)
B-lymphocyte
done
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B)
heparin
done
clear
C)
T-lymphocyte
done
clear
D)
both and
done
clear
View Answer play_arrow
question_answer 128) Reflex action involves :
A)
spinal cord
done
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B)
cerebellum
done
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C)
medulla obtongata
done
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D)
optic lobe
done
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View Answer play_arrow
question_answer 129) Which one has no intermediate host ?
A)
Taenia
done
clear
B)
Ascaris
done
clear
C)
Fasdola
done
clear
D)
Plasmodium
done
clear
View Answer play_arrow
question_answer 130) In the wall of alimentary canal, what is the actual sequence from outer to inner :
A)
serosa, longitudinal muscle, mucosa, submucosa
done
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B)
mucosa, serosa, long muscle
done
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C)
serosa, long muscle, circular, submucosa, mucosa
done
clear
D)
serosa, long muscle, submucosa, mucosa
done
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View Answer play_arrow
question_answer 131) Which one of the following can help in the diagnosis of a genetical disorder ?
A)
ELISA
done
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B)
ABO blood group
done
clear
C)
PCR
done
clear
D)
NMR
done
clear
View Answer play_arrow
question_answer 132) Bile helps in the digestion of fat through :
A)
emulsification
done
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B)
alkalinity
done
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C)
forming micelles
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 133) In frog chromosome number is reduced to half:
A)
when 2nd polar body is separated
done
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B)
when 2nd polar body is divided
done
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C)
when 3rd polar body is separated
done
clear
D)
when 1st polar body is separated
done
clear
View Answer play_arrow
question_answer 134) Is chihara chart is used to detect:
A)
T.B,
done
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B)
eyesight
done
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C)
colour blindness
done
clear
D)
diabetes
done
clear
View Answer play_arrow
question_answer 135) In diastole, heart is filled by :
A)
mixed blood
done
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B)
venous blood
done
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C)
oxygenated blood
done
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D)
deoxygenated blood
done
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View Answer play_arrow
question_answer 136) Periyar sanctuary is located in :
A)
Madhya Pradesh
done
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B)
Kerala
done
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C)
Uttar Pradesh
done
clear
D)
Assam
done
clear
View Answer play_arrow
question_answer 137) Which of the following is not an insect ?
A)
Locust
done
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B)
Lepisma
done
clear
C)
Termites
done
clear
D)
Spider
done
clear
View Answer play_arrow
question_answer 138) Which of the Following represents the dental formula of man ?
A)
\[\frac{0033}{3133}\]
done
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B)
\[\frac{2033}{1023}\]
done
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C)
\[\frac{2123}{2123}\]
done
clear
D)
\[\frac{1003}{1003}\]
done
clear
View Answer play_arrow
question_answer 139) The children of a haemophilia man and a normal woman are:
A)
all haemophitic
done
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B)
only daughters are haemophilic
done
clear
C)
only sons are haemophilic
done
clear
D)
neither sons nor daughters are haemophilia
done
clear
View Answer play_arrow
question_answer 140) Which cells are found only in sponges ?
A)
Amoeboid cells
done
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B)
Choanocytes
done
clear
C)
Pigment cells
done
clear
D)
Gland cells
done
clear
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question_answer 141) In which of the following there is syncytial epidermis and longitudinal muscle cells are in four bands ?
A)
Nematodes
done
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B)
Platyhelmindies
done
clear
C)
Annelids
done
clear
D)
Echinoderms
done
clear
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question_answer 142) A person having 45 chromosomes and Y-chromosome absent, is suffering from :
A)
Down's syndrome
done
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B)
Klinefelter's syndrome
done
clear
C)
Turner's syndrome
done
clear
D)
Gynandromorph So, a person having 45 chromosomes i.e., Y chromosomes absent is suffering from-Turner's syndrome (44 + XO).
done
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View Answer play_arrow
question_answer 143) Albinism is caused by deficiency of:
A)
amylase
done
clear
B)
ryrosinase
done
clear
C)
phenyl alanine
done
clear
D)
xanthene oxidase
done
clear
View Answer play_arrow
question_answer 144) Which brain structure in rabbit is directly related to vision ?
A)
Corpus albicans
done
clear
B)
Hippocampal lobe
done
clear
C)
Corpus callosum
done
clear
D)
Corpora quadrigemina
done
clear
View Answer play_arrow
question_answer 145) Which one is not found in testis of frog ?
A)
Sertoli cell
done
clear
B)
Seminiferous tubule
done
clear
C)
Germinal cell
done
clear
D)
Interstitial cell
done
clear
View Answer play_arrow
question_answer 146) Mammalian egg has :
A)
no yolk at all
done
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B)
small amount of yolk
done
clear
C)
large amount of yolk
done
clear
D)
yolk concentrated at one pole
done
clear
View Answer play_arrow
question_answer 147) Nails, hoofs and horns are examples of:
A)
bone
done
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B)
cartilage
done
clear
C)
connective tissue
done
clear
D)
epidermal derivatives
done
clear
View Answer play_arrow
question_answer 148) In procoelous vertebrae :
A)
anterior centrum is convex
done
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B)
anterior centrum is concave
done
clear
C)
anterior centrum is saddle shaped
done
clear
D)
posterior centrum is concave
done
clear
View Answer play_arrow
question_answer 149) The Coenozoic era is often designated as :
A)
age of fish
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B)
age of reptiles
done
clear
C)
age of mammals
done
clear
D)
age of amphibians
done
clear
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question_answer 150) Bidder's canal is found in :
A)
testes of frog
done
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B)
kidney of frog
done
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C)
kidney of mammal
done
clear
D)
ovary of mammal
done
clear
View Answer play_arrow
question_answer 151) Double fertilization was discovered by :
A)
Nawaschin
done
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B)
Strasburger
done
clear
C)
Emerson
done
clear
D)
None of these
done
clear
View Answer play_arrow
question_answer 152) In photosynthesis action and absorption spectrum were related by :
A)
Von Helmont
done
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B)
Engelmann
done
clear
C)
Emerson
done
clear
D)
Lavosier
done
clear
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question_answer 153) Which one of the following does?nt help in molecule transport ?
A)
Diffusion
done
clear
B)
Osmosis
done
clear
C)
Surface tension
done
clear
D)
Active transport
done
clear
View Answer play_arrow
question_answer 154) Stomatal opening in plants occurs due to influxof:
A)
Na
done
clear
B)
K
done
clear
C)
ABA
done
clear
D)
Auxins
done
clear
View Answer play_arrow
question_answer 155) Energy transfer in photosynthesis occurs as :
A)
phycoerythrin\[\to \]phycocyanin\[\to \]carotenoid\[\to \] chlorophyll-a
done
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B)
chlorophyll-b\[\to \] carotenoid\[\to \]phycoerythrin\[\to \] chlorophyll-a
done
clear
C)
phycocyanin\[\to \]phycoerythrin\[\to \]carotenoid\[\to \] chlorophyll-a
done
clear
D)
chlorophyll-b \[\to \]carotenoid\[\to \]phycocyanin\[\to \] chlorophyll-a
done
clear
View Answer play_arrow
question_answer 156) Litmus is obtained from :
A)
Rocellamontagnei
done
clear
B)
Lasalliapostulata
done
clear
C)
Both and
done
clear
D)
Cladoniacrispata
done
clear
View Answer play_arrow
question_answer 157) If a plant having yellow and round seeds was crossed with another plant having green and wrinkled seeds then progeny are in the ratio :
A)
15 : 1
done
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B)
1 : 15
done
clear
C)
1 : 13
done
clear
D)
all yellow and round seeds
done
clear
View Answer play_arrow
question_answer 158) Commercial cork is obtained from :
A)
flax
done
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B)
Juglansregia
done
clear
C)
Heve abrassiliansis
done
clear
D)
Quercussuber
done
clear
View Answer play_arrow
question_answer 159) Tea and coffee are affected by :
A)
Phytophthora
done
clear
B)
Cephaleuros
done
clear
C)
Herviella
done
clear
D)
Albugo Candida
done
clear
View Answer play_arrow
question_answer 160) If decomposers are removed what will happen to the ecosystem ?
A)
Energy cycle is stopped
done
clear
B)
Mineral cycle is stopped
done
clear
C)
Consumers cannot absorb solar energy
done
clear
D)
Rate of decomposition of mineral increases
done
clear
View Answer play_arrow
question_answer 161) In photosynthesis what occurs in PS-II ?
A)
It takes longer wavelength of light and \[{{e}^{-}}\] from \[{{H}_{2}}O\]
done
clear
B)
It takes shorter wavelength of light and \[{{e}^{-}}\] from \[{{H}_{2}}O\]
done
clear
C)
It takes longer wavelength of light and \[{{e}^{-}}\] from NADP
done
clear
D)
It takes shorter wavelength of light and \[{{e}^{-}}\] from NADP
done
clear
View Answer play_arrow
question_answer 162) Which are sensitive to \[S{{O}_{2}}\]pollution ?
A)
Mosses
done
clear
B)
Algae
done
clear
C)
Lichen
done
clear
D)
Ferns
done
clear
View Answer play_arrow
question_answer 163) Though Cycas has two cotyledons, this is not included in dicot because :
A)
naked ovule
done
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B)
they have megaspore
done
clear
C)
appears as palm tree
done
clear
D)
has compound leaves
done
clear
View Answer play_arrow
question_answer 164) In meiosis division is :
A)
1st reductional and Ilndequational
done
clear
B)
1st equational and Ilndreductional
done
clear
C)
bothreductional
done
clear
D)
bothequational
done
clear
View Answer play_arrow
question_answer 165) Auxin in plant means for :
A)
cell elongation
done
clear
B)
fruit ripening
done
clear
C)
cell division
done
clear
D)
inhibit the root growth
done
clear
View Answer play_arrow
question_answer 166) The thylakoid in chloroplast are arranged as :
A)
interconnected disc
done
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B)
interconnected sacs
done
clear
C)
stacked discs
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 167)
The given formula belongs to :
A)
Solanaceae
done
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B)
Malvaceae
done
clear
C)
Graminae
done
clear
D)
Compositae
done
clear
View Answer play_arrow
question_answer 168) Which of the following is used as green manure ?
A)
Azolla
done
clear
B)
Azadirachtaindica
done
clear
C)
Crotolariajuncea
done
clear
D)
Heveabrassiliansis
done
clear
View Answer play_arrow
question_answer 169) The non-photosynthetic, non-symbiotic \[{{N}_{2}}\]fixing bacteria are :
A)
Rhodobacter
done
clear
B)
Spirillum
done
clear
C)
Azotobacter
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 170) In monocot roots which types of vascular bundles are found ?
A)
Collateral, conjoint and closed
done
clear
B)
Radial with exarch xylem
done
clear
C)
Bicollateral, conjoint and closed
done
clear
D)
Radial with endarch xylem
done
clear
View Answer play_arrow
question_answer 171) The modified stem of Opuntia is :
A)
phyllode
done
clear
B)
phylloclade
done
clear
C)
cladode
done
clear
D)
stamroinode
done
clear
View Answer play_arrow
question_answer 172) Among plants ?pheromones? are secreted by the cells of the following plants for given function :
A)
all plants for growth and development
done
clear
B)
yeast for facilitating mating
done
clear
C)
all fungi for sexual reproduction
done
clear
D)
Rhizopus for formation of zygospore
done
clear
View Answer play_arrow
question_answer 173) The gases that produce green house effect are :
A)
\[C{{H}_{4}},CFCs,C{{O}_{2}}\]
done
clear
B)
\[C{{O}_{2}},{{N}_{2}}O,{{H}_{2}}\]
done
clear
C)
\[CFCs,N{{O}_{2}},{{O}_{2}}\]
done
clear
D)
\[C{{O}_{2}},{{N}_{2}}\]water vapour
done
clear
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question_answer 174) What?s the difference between RNA and DNA ?
A)
Base
done
clear
B)
Sugar
done
clear
C)
Sugar and base
done
clear
D)
Phosphate
done
clear
View Answer play_arrow
question_answer 175) Increase in toxic concentration from one trophic level to another trophic level is called :
A)
ecological to frication
done
clear
B)
bio-magnification
done
clear
C)
bio indicator
done
clear
D)
cytological effect
done
clear
View Answer play_arrow
question_answer 176) Potometer is used to measure :
A)
ascent of sap
done
clear
B)
root pressure
done
clear
C)
transpiration
done
clear
D)
photosynthesis
done
clear
View Answer play_arrow
question_answer 177) Which one is antioxidant vitamin ?
A)
Vitamin-D
done
clear
B)
Vitamin-E
done
clear
C)
Vitamin-B
done
clear
D)
Vitamin-K
done
clear
View Answer play_arrow
question_answer 178) The net gain ATP from complete oxidation of 1 molecule of glucose in eukaryote is :
A)
2
done
clear
B)
4
done
clear
C)
24
done
clear
D)
36
done
clear
View Answer play_arrow
question_answer 179) Which of the following workers are related as ecologist, palaeobotanist and embryologist respectively?
A)
B. Sahni, R. Mishra, P. Maheshwari
done
clear
B)
R. Mishra, B. Sahni, P. Maheshwari
done
clear
C)
B. Sahni, P. Maheshwari, R. Mishra
done
clear
D)
P. Maheshwari, R. Mishra, B. Sahni
done
clear
View Answer play_arrow
question_answer 180) In bacteria respiration occurs in :
A)
cytoplasmic membrane
done
clear
B)
mitochondria
done
clear
C)
nuclear membrane
done
clear
D)
endoplasmic reticulum
done
clear
View Answer play_arrow
question_answer 181) R.Q. is always less than one in :
A)
wheat
done
clear
B)
millets
done
clear
C)
bean
done
clear
D)
castor
done
clear
View Answer play_arrow
question_answer 182) Pencils are prepared from the wood of:
A)
Pinusvinaster
done
clear
B)
Juniperusvirginiana
done
clear
C)
Chamaecyparispiscifera
done
clear
D)
Abiespindrow
done
clear
View Answer play_arrow
question_answer 183) Ageing is retailed by :
A)
ABA
done
clear
B)
CKN
done
clear
C)
GA
done
clear
D)
\[{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{4}}}\]
done
clear
View Answer play_arrow
question_answer 184) The form of pigment which inhibits germination is
A)
\[{{\text{P}}_{\text{76}0}}\]
done
clear
B)
\[{{\text{P}}_{\text{73}0}}\]
done
clear
C)
\[{{P}_{650}}\]
done
clear
D)
All of these
done
clear
View Answer play_arrow
question_answer 185) In Hatch and Slack pathway :
A)
chloroplast are of same type
done
clear
B)
occurs Kranz anatomy where mesophyll have small chloroplast whereas bundle sheath have granal Chloroplast
done
clear
C)
occurs in Kranz anatomy when mesophyll have small chloroplast whereas bundle sheath have larger, agranal chloroplast
done
clear
D)
Kranz anatomy where mesophyll cell are diffused
done
clear
View Answer play_arrow
question_answer 186) The Triticale is an intergeneric hybrid between:
A)
wheat and maize
done
clear
B)
maize and rye
done
clear
C)
wheat and rye
done
clear
D)
bajra and wheat
done
clear
View Answer play_arrow
question_answer 187) The dormancy of seed is regulated by :
A)
ABA
done
clear
B)
Ethylene
done
clear
C)
GA-3
done
clear
D)
Dihydrozeatin
done
clear
View Answer play_arrow
question_answer 188) Colchicine prevents the mitosis of the cells at which of the following stage ?
A)
Anaphase
done
clear
B)
Metaphase
done
clear
C)
Prophase
done
clear
D)
Interphase
done
clear
View Answer play_arrow
question_answer 189) For the formation of tetras poricembryosac, how many megaspore mother cells are required ?
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
question_answer 190) DNA replication generally proceeds in a :
A)
\[5'\to 3'\]direction
done
clear
B)
\[3'\to 5'\]direction
done
clear
C)
\[3'\to 3'\]direction
done
clear
D)
\[5'\to 5'\]direction
done
clear
View Answer play_arrow
question_answer 191) Pairing of homologous chromosome occurs at which stage?
A)
Zygotene
done
clear
B)
Leptotene
done
clear
C)
Metaphase
done
clear
D)
Pachytene
done
clear
View Answer play_arrow
question_answer 192) Inter fascicular cambium is found :
A)
between pith and vascular bundle
done
clear
B)
between two vascular bundles
done
clear
C)
in the vascular bundle
done
clear
D)
outside the bundle
done
clear
View Answer play_arrow
question_answer 193) The number of essential nutrients needed in plants is :
A)
16
done
clear
B)
5
done
clear
C)
4
done
clear
D)
8
done
clear
View Answer play_arrow
question_answer 194) To form one molecule of glyceraldehyde phosphate in Calvin cycle :
A)
9 ATP and 36 NADPH are required
done
clear
B)
6 ATP and 6 NADPH are required
done
clear
C)
3 ATP and 3 NADPH are required
done
clear
D)
9 ATP and 6 NADPH are required
done
clear
View Answer play_arrow
question_answer 195) Water available to plants is :
A)
run off water
done
clear
B)
gravitational water
done
clear
C)
hygroscopic water
done
clear
D)
capillary water
done
clear
View Answer play_arrow
question_answer 196) Primary precursor of IAA is :
A)
phenylalanine
done
clear
B)
tryptophan
done
clear
C)
Cycas
done
clear
D)
Pteris
done
clear
View Answer play_arrow
question_answer 197) Reindeer moss is
A)
Cladonia sp.
done
clear
B)
Usnea sp.
done
clear
C)
tyrosine
done
clear
D)
lucine
done
clear
View Answer play_arrow
question_answer 198) Algae used in space programme is :
A)
Diatom
done
clear
B)
Dinoflagellates
done
clear
C)
Chlamydomonas
done
clear
D)
Chlorella
done
clear
View Answer play_arrow
question_answer 199) Winged pollen grains are found in :
A)
Pinus
done
clear
B)
Selaginella
done
clear
C)
Cetraria sp.
done
clear
D)
Parmelia sp.
done
clear
View Answer play_arrow
question_answer 200) The polidy of the pollen grain in Cyperus is :
A)
4n
done
clear
B)
3n
done
clear
C)
2n
done
clear
D)
n
done
clear
View Answer play_arrow
to\[t=6\,s\]of the journey is: [BHU M-2003]
