Official NEET UG 2012 (B1)
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Question 1 of 200
1. Question
Electron in hydrogen atom first jumps from third excited state to second excited state and then from second excited to the first excited state. The ratio of the wavelength \(\lambda _1: \lambda _2\) emitted in the two cases is
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Question 2 of 200
2. Question
When a string is divided into three segments of length \(l_1, l_2\) \(l_3 \) the fundamental frequencies of these three segments are \(v_1 , v_2 \) and \(v_3\) respectively. The original fundamental frequency (v) of the string is
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Question 3 of 200
3. Question
A 200 W sodium street lamp emits yellow light of wavelength 0.6 \(\mu \)m. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow light it emits per second is.
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Question 4 of 200
4. Question
Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is :
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Question 5 of 200
5. Question
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along :
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Question 6 of 200
6. Question
An electric dipole of moment ‘p’ is placed in an electric field of intensity ‘E’. The dipole acquires a position such that the axis of the dipole makes an angle \(\Theta \) with the direction of the field. Assuming that the potential energy of the dipole to be zero when \(\Theta \) = 90\(^o\) , the torque and the potential energy of the dipole will respectively be :
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Question 7 of 200
7. Question
In a CE transistor amplifier, the audio signal voltage across the collector resistance of 2k \(\Omega \) is 2V. If the base resistance is 1k\(\Omega \) and the current amplification of the transistor is 100, the input signal voltage is :
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Question 8 of 200
8. Question
A coil of resistance 400\(\Omega \)is placed in a magnetic field. If the magnetic flux \(\phi \) (wb) linked with the coil varies with time t (sec) as \(\phi \) = 50t\(^2\) + 4. The current in the coil at t = 2 sec is :
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Question 9 of 200
9. Question
A thermodynamic system is taken through the cycle ABCD as shown in figure. Heat rejected by the gas during the cycle is :
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Question 10 of 200
10. Question
If the nuclear radius of \(^{27}\) Al is 3.6 Fermi, the approximate nuclear radius of \(^{64}\) Cu in Fermi is :
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Question 11 of 200
11. Question
Two similar coils of radius R are lying concentrically with their planes at right angles to each other. The currents flowing in them are I an 2 I, respectively. The resultant magnetic field induction at the centre will be:
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Question 12 of 200
12. Question
The potential energy of particle in a force field is ,\(U = \frac{A}{r^2} – \frac{B}{r}. \) where A and B are positive constants and r si the distance of particle from the centre of the field. For stable equilibrium, the distance of the particle is
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Question 13 of 200
13. Question
When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass . This implies that the liquid must have refractive index.
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Question 14 of 200
14. Question
The horizontal range and the maximum height of a projectile are equal. The angle of projection of the projec- tiles is :
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Question 15 of 200
15. Question
In an electrical circuit R,L, C and an a.c. voltage source are all connected in series. When L is removed from the circuit, the phase difference between the voltage the current in the circuit is \(\pi \)/3. If instead, C is removed from the circuit, the phase difference is again \(\pi \)/3. The power factor of the circuit is :
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Question 16 of 200
16. Question
If the radius of a star is R and it acts as a black body, what would be the temperature of the star, in which the rate of energy production is Q ?
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Question 17 of 200
17. Question
The current (I) in the inductance is varying with time according to the plot shown in figure.
Which one of the following is the correct variation of voltage with time in the coil ?
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Question 18 of 200
18. Question
A milli voltmeter of 25 milli volt range is to be converted into an ammeter of 25 ampere range. The value (in ohm) of necessary shunt will be :
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Question 19 of 200
19. Question
Two persons of masses 55 kg and 65 kg respectively, are at the opposite ends of a boat. The length of the boat is 3.0 m and weighs 100 kg. The 55 kg man walks up to the 65 kg man and sits with him. If the boat is in still water the centre of mass of the system shifts by :
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Question 20 of 200
20. Question
A mixture consists of two radioactive materials A\(_1\) and A\(_2\) with half lives of 20s and 10 s respectively. Initially the mixture has 40 g of A\(_1\) and 160 g of A\(_2\) . The amount of the two in the mixture will become equal after :
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Question 21 of 200
21. Question
C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulator where as Si is intrinsic semiconductor. This is because :
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Question 22 of 200
22. Question
The height at which the weight of a body becomes 1/16\(^{th}\), its weight on the surface of earth (radius R), is :
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Question 23 of 200
23. Question
An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquired as a result of photon emission will be :
(m is the mass of the electron, R, Rydberg constant and h Planckís constant)
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Question 24 of 200
24. Question
A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It :
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Question 25 of 200
25. Question
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Question 26 of 200
26. Question
Four point charges ñQ, ñq, 2q and 2Q are placed, one at each corner of the square. The relation between Q and q for which the potential at the centre of the square is zero is
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Question 27 of 200
27. Question
A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45\(^o\), the speed of the car is
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Question 28 of 200
28. Question
A solid cylinder of mass 3 kg is rolling on a horizontal surface with velocity 4ms\(^{-1}\) . It collides with a horizontal spring of force constant 200 Nm\(^{-1}\) The maximum compression produced in the spring will be :
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Question 29 of 200
29. Question
One mole of an ideal gas goes from an initial state A to final state B via two processes : It first undergoes isothermal expansion from volume V to 3V and then its volume is reduced from 3V to V at constant pressure. The correct P-V diagram representing the two processes is :
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Question 30 of 200
30. Question
Two spheres A and B of masses m\(_1\) and m\(_2\) respectively collide. A is at rest initially and B is moving with velocity v along x-axis. After collision B has a velocity \(\frac{v}{2}\) in a direction perpendicular to the original direction. The mass A moves after collision in the direction.
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Question 31 of 200
31. Question
Liquid oxygen at 50K is heated to 300 K at constant pressure of 1 atm. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time ?
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Question 32 of 200
32. Question
An alternating electric field, of frequency ?, is applied across the dees (radius = R) of a cyclotron that is being used to accelerate protons (mass = m). The operating magnetic field (B) used in the cyclotron and the kinetic energy (K) of the proton beam, produced by it, are given by :
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Question 33 of 200
33. Question
A spherical planet has a mass M\(_P\) and diameter D\(_P\) . A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity, equal to :
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Question 34 of 200
34. Question
A ray of light is incident at an angle of incidence, i, on one face of prism of angle A (assumed to be small) and emerges normally from the opposite face. If the refractive index of the prism is \(\mu \), the angle of incidence i, is nearly equal to :
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Question 35 of 200
35. Question
The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are :
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Question 36 of 200
36. Question
Motile zygote of Plasmodium occurs in :
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Question 37 of 200
37. Question
The human hind brain comprises three parts, one of which is :
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Question 38 of 200
38. Question
Which part of the human ear plays no role in hearing as such but is otherwise very much required ?
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Question 39 of 200
39. Question
The most abundant prokaryotes helpful to humans in making curd from milk and in production of antiboitics are the ones categorised as :
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Question 40 of 200
40. Question
Which on of the following statements is false in respect of viability of mamalian sperm ?
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Question 41 of 200
41. Question
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as :
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Question 42 of 200
42. Question
What is the figure given below showing in particular ?
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Question 43 of 200
43. Question
In an area where DDT had been used extensively, the population of birds declined significantly because:
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Question 44 of 200
44. Question
The figure below is the diagrammatic representation of the E.Coli vector pBR 322. Which one of the given options correctly identifies its certain component (s) ?
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Question 45 of 200
45. Question
The common bottle cork is a product of :
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Question 46 of 200
46. Question
Widal Test is carried out to test :
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Question 47 of 200
47. Question
Which part would be most suitable for raising virus-free plants for micropropagation ?
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Question 48 of 200
48. Question
Whic one of the following is a wrong statment ?
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Question 49 of 200
49. Question
Companion cells are closely associated with :
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Question 50 of 200
50. Question
Common cold differs from pneumonia in, that :
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Question 51 of 200
51. Question
Pheretima and its close relatives derive nourishment from :
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Question 52 of 200
52. Question
Removal of RNA polymerase III from nucleoplasm will affect the synthesis of :
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Question 53 of 200
53. Question
A process that makes important difference between C\(_3\) and C\(_4\) plants is
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Question 54 of 200
54. Question
PCR and Restriction Fragment Length Polymorphism are the methods for :
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Question 55 of 200
55. Question
Best defined function of Manganese in green plants is :
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Question 56 of 200
56. Question
Measuring Biochemical Oxygen Demand (BOD) is a method used for :
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Question 57 of 200
57. Question
Which one -of the following is not a part of a transcription unit in DNA ?
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Question 58 of 200
58. Question
A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor ?
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Question 59 of 200
59. Question
Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin’A’ deficiency ?
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Question 60 of 200
60. Question
The maximum amount of electrolytes and water (70 – 80 percent) from the glomerular filtrate is reabsorbed in which part of the nephron ?
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Question 61 of 200
61. Question
A concave mirror of focal length ‘f’\(_1\) is placed at a distance of ‘d’ from a convex lens of focal length ‘f’\(_2\) A beam of light coming from infinity and falling on this convex lens – concave mirror combination returns to infinity. The distance ‘d’ must equal :
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Question 62 of 200
62. Question
A geostationary satellite is orbiting the earth at a height of 5R above that surface of the earth, R being the radius of the earth. The time period of another satellite in hours at a height of 2R from the surface of the earth is :
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Question 63 of 200
63. Question
Transfer characteristics [output voltage (V\(_0\)) vs input voltage (V\(_i\))] for a base biased transistor in CE configuration is as shown in the figure. For using transistor as a switch, it is used :
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Question 64 of 200
64. Question
If voltage across a bulb rated 220 Volt – 100 Watt drops by 2.5 % of its rated value, the percentage of the rated value by which the power would decrease is
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Question 65 of 200
65. Question
A particle has initial velocity \((2\vec{i} + 3\vec{j})\) and acceleration \((0.3 \vec{i} + 0.2 \vec{j})\). The magnitude of velocity after 10 seconds will be :
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Question 66 of 200
66. Question
Monochromatic radiation emitted when electron on hydrogen atom jumps from first excited to the ground state irradiates a photosensitive material. The stopping potential is measured to be 3.57 V. The threshold frequency of the materials is :
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Question 67 of 200
67. Question
ABC is an equilateral triangle with O as its centre. \(\hat{F}_1 , \hat{F}_2 \) and \(\hat{F}_3\) represent three forces acting along the sides AB, BC and AC respectively. If the total torque about O is zero the magnitude of\(\hat{F}_3\) is :
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Question 68 of 200
68. Question
The figure shows a logic circuit with two inputs A and B and the output C. The voltage wave forms across A, B and C are as given. The logic circuit gate is :
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Question 69 of 200
69. Question
What is the flux through a cube of side ‘a’ if a point charge of q is at one of its corner :
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Question 70 of 200
70. Question
An \(\alpha \)-particle moves in a circular path of radius 0.83 cm in the presence of a magnetic field of 0.25 Wb/m\(^2\)
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Question 71 of 200
71. Question
The electric field associated with an e.m. wave in vacuum is given by \(\vec{E} = \hat{i}\) 40 cos (kz – 6 ×10\(^8\) t), where E, z and t are in volt/m, meter and seconds respectively. The value of wave vector k is :
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Question 72 of 200
72. Question
The motion of a particle along a straight line is described by equation : x = 8 + 12 t – t\(^3\) where x is in metre and t in second. The retardation of the particle when its velocity becomes zero, is :
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Question 73 of 200
73. Question
The magnifying power of a telescope is 9. When it is adjusted for parallel rays the distance between the objective and eyepiece is 20 cm. The focal length of lenses are :
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Question 74 of 200
74. Question
Two sources of sound placed close to each other are emitting progressive waves given by y\(_1\) = 4 sin 600 \(\pi \)t and y\(_2\) = 5 sin 608 \(\pi \)t. An observer located near these two sources of sound will hear :
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Question 75 of 200
75. Question
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Question 76 of 200
76. Question
Aluminium is extracted from alumina (Al\(_2\)O\(_3\)) by electrolysis of a molten mixture of :
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Question 77 of 200
77. Question
pH of a saturated solution of Ba(OH)\(_2\) is 12. The value of solubility product (K\(_{SP}\)) of Ba(OH)2\(_2\) is :
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Question 78 of 200
78. Question
When Cl\(_2\) gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from :
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Question 79 of 200
79. Question
Maximum number of electrons in a subshell with :
I = 3 and n = 4 is :
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Question 80 of 200
80. Question
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ?
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Question 81 of 200
81. Question
In a reaction, A + B \(\to \)Product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentrations of both the reactants (A and B) are doubled, rate law for the reaction can be written as :
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Question 82 of 200
82. Question
In which of the following reactions, standard reaction entropy change (\(\triangle \)S\(^o\)) is positive and standard Gibbís energy change (\(\triangle \) G\(^o\)) decreases sharply with increasing temperature ?
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Question 83 of 200
83. Question
Which one of the following is a mineral of iron ?
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Question 84 of 200
84. Question
In Freundlich Adsorption isotherm, the value of 1/n is :
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Question 85 of 200
85. Question
Equimolar solutions of the following substances were prepared separately. Which one of these wil record the highest pH value ?
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Question 86 of 200
86. Question
Both, autogamy and geitonogamy are prevented in –
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Question 87 of 200
87. Question
Placentation in tomato and lemon is
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Question 88 of 200
88. Question
A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neuro-hormonal control system ?
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Question 89 of 200
89. Question
Which one of the following is not a gaseous biogeochemical cycle in ecosystem ?
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Question 90 of 200
90. Question
A single strand of nucleic acid tagged with a radioactive molecule is called :
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Question 91 of 200
91. Question
Which one of the following options gives one correct example each of convergent evolution and divergent evolution?
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Question 92 of 200
92. Question
An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is :
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Question 93 of 200
93. Question
Cycas and Adiantum resemble each other in having:
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Question 94 of 200
94. Question
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors ?
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Question 95 of 200
95. Question
Cymose inflorescence is present in :
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Question 96 of 200
96. Question
Ribosomal RNA is actively synthesized in
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Question 97 of 200
97. Question
During gamete formation, the enzyme recombinase participates during
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Question 98 of 200
98. Question
Identify the possible link “A” in the following food chain :
Plant \(\to \)insect – frog \(\to \) “A” \(\to \) Eagle
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Question 99 of 200
99. Question
Phyllode is present in :
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Question 100 of 200
100. Question
Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?
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Question 101 of 200
101. Question
Monascus purpureus is a yeast used commercially in the production of :
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Question 102 of 200
102. Question
The correct sequence of cell organelles during photorespiration is :
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Question 103 of 200
103. Question
Which one of the following is correctly matched ?
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Question 104 of 200
104. Question
A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind. They have their first child as a daughter. what are the chance that this child would be colour blind ?
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Question 105 of 200
105. Question
Signals for parturition originate from :
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Question 106 of 200
106. Question
A patient brought to a hospital with myocardial infarction is normally immediately given :
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Question 107 of 200
107. Question
Which one of the following is not a property of cancerous cells whereas the remaining three are ?
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Question 108 of 200
108. Question
The gynoecium consists of many free pistils in flowers of
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Question 109 of 200
109. Question
Which one of the following is not a functional unit of an ecosystem
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Question 110 of 200
110. Question
In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was
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Question 111 of 200
111. Question
Which one of the following areas in India, is a hotspot of biodiversity
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Question 112 of 200
112. Question
Which one of the follwing is a correct statement
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Question 113 of 200
113. Question
Which one of the following does not differ in E.coli and Chlamydomonas
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Question 114 of 200
114. Question
50 mL of each gas A and of gas B takes 150 and 200 seconds respectively for effusing through a pin hole under the similar condition. If molecular mass of gas B is 36, the molecular mass of gas A will be :
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Question 115 of 200
115. Question
The correct set of four quantum numbers for the valence elecron of rubidium atom (Z=37) is :
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Question 116 of 200
116. Question
In which of the following compounds, nitrogen exhibits highest oxidation state ?
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Question 117 of 200
117. Question
Predict the product in the given reaction.
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Question 118 of 200
118. Question
Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is :
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Question 119 of 200
119. Question
A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is:
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Question 120 of 200
120. Question
Which one of the following, statements is incorrect about enzyme catalysis ?
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Question 121 of 200
121. Question
In a zero- order reaction for every 10\(^o\) rise of temperature, the rate is doubled. If the temperature is increased from 10\(^o\) C to 100\(^o\) C, the rate of the reaction will become :
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Question 122 of 200
122. Question
Deficiency of vitamin B\(_1\) causes the disease
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Question 123 of 200
123. Question
Among the following compounds the one that is most reactive towards electrophilic nitration is :
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Question 124 of 200
124. Question
Buffer solutions have constant acidity and alkalinity because :
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Question 125 of 200
125. Question
The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C) and formic acid (D) is :
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Question 126 of 200
126. Question
Which one of the following sets of monosaccharides forms sucrose ?
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Question 127 of 200
127. Question
The enthalpy of fusion of water is 1.435 kcal/mol. The molar entropy change for the melting of ice at 0\(^o\)C is :
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Question 128 of 200
128. Question
Which one of the following pairs is isostructural (i.e. having the same shape and hybridization) ?
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Question 129 of 200
129. Question
Bond order of 1.5 is shown by :
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Question 130 of 200
130. Question
Which one of the following is not a condensation polymer ?
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Question 131 of 200
131. Question
In the following sequence of reactions
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Question 132 of 200
132. Question
Which nomenclature is not according to IUPAC system ?
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Question 133 of 200
133. Question
The number of octahedral void(s) per atom present in a cubic close-packed structure is :
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Question 134 of 200
134. Question
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with :
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Question 135 of 200
135. Question
Identify the alloy containing a non-metal as a constituent in it.
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Question 136 of 200
136. Question
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number ?
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Question 137 of 200
137. Question
Which one of the alkali metals, forms only, the normal oxide, M\(_2\)O on heating in air ?
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Question 138 of 200
138. Question
The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order :
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Question 139 of 200
139. Question
Which one of the following statements regarding photochemical smog is not correct ?
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Question 140 of 200
140. Question
CH\(_3\)CHO and C\(_6\)H\(_5\)CH\(_2\)CHO can be distinguished chemically by :
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Question 141 of 200
141. Question
Which of the statements is not true ?
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Question 142 of 200
142. Question
Standard enthalpy of vapourisation \( \triangle _{vap}\) H\(^o\) for water at 100\(^o\) C is 40.66 kJ mol\(^{-1}\). The internal energy of vaporisation of water at 100oC (in kJmolñ1) is :
(Assume water vapour to behave like an ideal gas).
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Question 143 of 200
143. Question
Identify the wrong statement in the following :
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Question 144 of 200
144. Question
Which of the following statements is not valid for oxoacids of phosphorus ?
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Question 145 of 200
145. Question
The protecting power of lyophilic colloidal sol is expressed in terms of :
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Question 146 of 200
146. Question
Sulphur trioxide can be obtained by which of the following reaction :
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Question 147 of 200
147. Question
P\(_A \)and P\(_B\) are the vapour pressure of pure liquid components, A and B, respectively of an ideal binary solution. If X\(_A\) represents the mole fraction of component A, the total pressure of the solution will be.
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Question 148 of 200
148. Question
Which of the following acids does not exhibit optical isomerism ?
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Question 149 of 200
149. Question
Which of the following species contains three bond pairs and one lone pair around the central atom ?
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Question 150 of 200
150. Question
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Question 151 of 200
151. Question
The pair of species with the same bond order is :
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Question 152 of 200
152. Question
Which of the following statements is false ?
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Question 153 of 200
153. Question
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Question 154 of 200
154. Question
The cycanobacteria are also referred to as
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Question 155 of 200
155. Question
The test-tube Baby Programme employs which one of the following techniques
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Question 156 of 200
156. Question
Which one of the following is a case of wrong matching
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Question 157 of 200
157. Question
The highest number of species in the world is represented by
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Question 158 of 200
158. Question
In which one of the following options the two examples are correctly matched with their particular type of immunity
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Question 159 of 200
159. Question
Which one of the following is wrong statement
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Question 160 of 200
160. Question
Anxiety and eating spicy food together in an otherwise normal human, may lead to
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Question 161 of 200
161. Question
The Leydig cells found in the human body are the secretory source of
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Question 162 of 200
162. Question
Compared to those of humans, the erythrocytes in frog are
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Question 163 of 200
163. Question
In which one of the following the genus name, its two charcters and its phylum are not correctly matched, whereas the remaining three are correct
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Question 164 of 200
164. Question
What is true about ribosomes
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Question 165 of 200
165. Question
Cirrhosis of liver is caused by the chronic intake of
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Question 166 of 200
166. Question
Which one is a true statement regarding DNA polymerase used in PCR
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Question 167 of 200
167. Question
Which statement is wrong for viruses
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Question 168 of 200
168. Question
Which one of the following is correctly matched
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Question 169 of 200
169. Question
How many plants in the list given below have composite fruits that develop from an inflorescence Walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry
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Question 170 of 200
170. Question
Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component “X” in it.
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Question 171 of 200
171. Question
Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition
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Question 172 of 200
172. Question
The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, With short stature, heavy eyebrows, retreating fore haeds, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was
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Question 173 of 200
173. Question
If one strand of DNA has the nitrogenous base sequence at ATCTG, what would be the complementary RNA strand sequence
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Question 174 of 200
174. Question
Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (Mostly in the nucleus)
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Question 175 of 200
175. Question
Nuclear mebrane is absent in
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Question 176 of 200
176. Question
Which one is the most abundant protein in the animal world
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Question 177 of 200
177. Question
Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses
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Question 178 of 200
178. Question
Which one single organism or the pair of organisms is correctly assigned ot its or their named taxonomic group
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Question 179 of 200
179. Question
Even in absence of pollinating agents seed setting is assured in
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Question 180 of 200
180. Question
Yeast is used in the production of
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Question 181 of 200
181. Question
Which one out of A -D given below correctly respresents the structural formula of the basic amino acid
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Question 182 of 200
182. Question
The upright pyramid of number is absent in
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Question 183 of 200
183. Question
What is correct to say about the hormone action in humans
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Question 184 of 200
184. Question
Closed vascular bundles lack
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Question 185 of 200
185. Question
Which one of the following is the correct statement for respiration in human
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Question 186 of 200
186. Question
Removal of introns and joining of exons in a defined order during transcription is called :
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Question 187 of 200
187. Question
F\(_2\) generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1. It represents a case of :
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Question 188 of 200
188. Question
Given below is the representation of a certain event at a particular stage of a type of cell division. Which is
this stage ?
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Question 189 of 200
189. Question
People who have migrated from the planes to an area adjoining Rohatang Pass about six months back :
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Question 190 of 200
190. Question
For transformation, micro-particles coated with DNA to be bombarded with gene gun are made up of :
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Question 191 of 200
191. Question
A nitrogen-fixing microbe associated with Azolla in rice fields is :
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Question 192 of 200
192. Question
Select the correct statement regarding the specific disorder of muscular or skeletal system :-
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Question 193 of 200
193. Question
Water containing cavities in vascular bundles are found in :
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Question 194 of 200
194. Question
Select the correct statement from the following regarding cell membrane.
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Question 195 of 200
195. Question
Gymnosperms are also called soft wood spermatophytes because they lack :
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Question 196 of 200
196. Question
The coconut water and the edible part of coconut are equivalent to :
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Question 197 of 200
197. Question
Vexillary aestivation is characteristic of the family
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Question 198 of 200
198. Question
Which one of the following is an example of carrying out biological control of pests/diseases using microbes ?
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Question 199 of 200
199. Question
Select the correct statement from the ones given below with respect to Periplaneta americana.
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Question 200 of 200
200. Question
Maximum nutritional diversity is found in the group.
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