Official NEET UG 2012 (D1)
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Question 1 of 120
1. Question
Vapour pressure of chloroform \((CHCl_{3} ) and dichloromethane (CH_{2}Cl_{2} ) at 25^{°}C are 200 mm Hg and 41.5 mm Hg respectively. Vapour pressure of the solution obtained by mixing 25.5 g of CHCl_{3} and 40 g of CH_{2}Cl_{2} at the same temperature will be:
(Molecular mass of CHCl_{3} = 119.5 u and molecular mass of CH_2}Cl_{2} = 85 u)\)
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Question 2 of 120
2. Question
The Gibbs energy for the decomposition of \(Al_{2}O_{3} at 500^{°}C is as follows:
The potential difference needed for the electrolytic reduction of aluminium oxide (Al_{2}O_{3} ) at 500^{°}C\) at least
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Question 3 of 120
3. Question
Four successive members of the first series of the transition metals are listed below. For which one
of them the standard potential \((^{0}E_{M}^{2+}/M) value has a positive sign?\)
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Question 4 of 120
4. Question
Which of the following exhibits only +3 oxidation state?
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Question 5 of 120
5. Question
Molar conductivities\((^{0}\wedge_{m}) at infinite dilution of NaCl, HCl and CH_{3}COONa are 126.4, 425.9 and
91.0 S cm^{2} mol^{–1} respectively.^{0}\wedge_{m} for CH_{3}COOH will be:\)
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Question 6 of 120
6. Question
In which of the following arrangements the given sequence is not strictly according to the property indicated against it?
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Question 7 of 120
7. Question
Consider the reaction:
What sort of reaction is it?
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Question 8 of 120
8. Question
During change of \(O_{2} to ^{-}O_{2} \)ion, the electron adds on which one of the following orbitals?
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Question 9 of 120
9. Question
Standard reduction potentials of the half reactions are given below:
The strongest oxidising and reducing agents respectively are:
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Question 10 of 120
10. Question
The catalytic activity of transition metals and their compounds is ascribed mainly to
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Question 11 of 120
11. Question
Equal volumes of two monoatomic gases, A and B, at same temperature and pressure are mixed. The ratio of specific heats \((C_{p} /C_{v} )\) of the mixture will be
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Question 12 of 120
12. Question
Given that the equilibrium constant for the reaction
has a value of 278 at a particular temperature. What is the value of the equilibrium constant for the following reaction at the same temperature.
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Question 13 of 120
13. Question
Which one of the following sets forms the bidegradable polymer?
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Question 14 of 120
14. Question
In the replacement reaction
The reaction will be most favourable if M happens to be:
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Question 15 of 120
15. Question
Activation energy [athjax]\((E_{a} ) and rate constants (k_{1} and k_{2} ) of a chemical reaction of two different temperatures (T_{1} and T_{2}\) ) are related by:
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Question 16 of 120
16. Question
Which one of the following does not correctly represent the correct order of the property indicated against it?
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Question 17 of 120
17. Question
Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni(II). Which of the following statements is not true?
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Question 18 of 120
18. Question
An organic compound\( (C_{3}H_{9}N) (A), when treated with nitrous acid, gave an alcohol and N_{2} gas was evolved. (A) on warming with CHCl_{3} and caustic potash gave (C) which on reduction gave isopropylmethylamine. Predict the structure (A).\)
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Question 19 of 120
19. Question
Structure of a mixed oxide is cubic close-packed (c.c.p). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are occupied by a monovalent metal B. The formula of the oxide is:
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Question 20 of 120
20. Question
The orbital angular momentum of a p-electron is given as:
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Question 21 of 120
21. Question
Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them:
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Question 22 of 120
22. Question
Which of the following compounds can be used as antifreeze in automobile radiators?
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Question 23 of 120
23. Question
For real gases van der Waals equation is written as
The gases given in set-I in increasing order of ‘b’ and gases given in set-II in decreasing order of ‘a’, are arranged below. Select the correct order from the following:
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Question 24 of 120
24. Question
A certain gas takes three times as long to effuse out as helium. Its molecular mass will be:
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Question 25 of 120
25. Question
Consider the following reaction:
The product ‘A’ is
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Question 26 of 120
26. Question
Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne?
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Question 27 of 120
27. Question
Which of the following compounds will give a yellow precipitate with iodine and alkali?
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Question 28 of 120
28. Question
Chloroamphenicol is an:
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Question 29 of 120
29. Question
Given the reaction between 2 gases represented by\( A_{2} and B_{2} to give the compound AB_{(g)}\).
If the reaction takes place in a sealed vessel at \(527^{°}C, then the value of K_{c}\) will be:
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Question 30 of 120
30. Question
Low spin complex of d\(_{6}\) – cation in an octahedral field will have the following energy:
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Question 31 of 120
31. Question
n the five-kingdom classification, Chlamydomonas and Chlorella have been included in
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Question 32 of 120
32. Question
Indentify the likely organisms (a), (b) (c) and (d) in the food web shown below
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Question 33 of 120
33. Question
A test cross is carried out to
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Question 34 of 120
34. Question
Read the following five statements (A – E) and answer as asked next to them
(A) In Equisetum the female gametophyte is retained on the parent sporophyte
(B) In Ginkgo male gametophyte is not independent
(C) The sporophyte in Riccia is more developed than that in Polytrichum
(D) Sexual reproduction in Volvox is isogamous
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Question 35 of 120
35. Question
Which one of the following human organs is often called the “graveyard” of RBCs ?
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Question 36 of 120
36. Question
Which one of the following generally acts as an antagonist to gibberellins ?
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Question 37 of 120
37. Question
Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells).
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Question 38 of 120
38. Question
How many plants in the list given below have marginal placentation ?
Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin
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Question 39 of 120
39. Question
For its activity, carboxypeptidase requires
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Question 40 of 120
40. Question
The second stage of hydrosere is occupied by plants like
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Question 41 of 120
41. Question
Which one of the following structures is an organelle within an organelle ?
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Question 42 of 120
42. Question
In gobar gas, the maximum amont is that of
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Question 43 of 120
43. Question
The first clinical gene therapy was given for treating
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Question 44 of 120
44. Question
Which one of the following biomolecules is correctly characterised ?
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Question 45 of 120
45. Question
Green revolution in India occurred during
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Question 46 of 120
46. Question
Cuscuta is an example of
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Question 47 of 120
47. Question
Consider the following four statements (a–d) and select the option which includes all the correct ones only
(a) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc
(b) Body weight-wise the microorganism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day
(c) Common button mushrooms are a very rich source of vitamin C
(d) A rice variety has been developed which is very rich in calcium
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Question 48 of 120
48. Question
How many organisms in the list given below are autotrophs ?
Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Sacharomyces, Trypanosoma, Porphyra, Walfia
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Question 49 of 120
49. Question
Which one of the following categories of animals, is correctly described with no single exception in it ?
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Question 50 of 120
50. Question
The four sketches (A, B, C and D) given below, represent four different types of animal tissues. Which one of these is correctly identified in the options given, along with its correct location and function ?
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Question 51 of 120
51. Question
Given below is the diagrammatic sketch of a certain type of connective tissue. Identify the parts labelled A, B, C and D, and select the right option about them
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Question 52 of 120
52. Question
Sacred groves are specially useful in
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Question 53 of 120
53. Question
The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents ?
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Question 54 of 120
54. Question
The rate of formation of new organic matter by rabbit in a grassland, is called
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Question 55 of 120
55. Question
Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature and correctly described ?
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Question 56 of 120
56. Question
Which one of the following represents palindromic sequence in DNA ?
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Question 57 of 120
57. Question
Vernalisation stimulates flowering in
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Question 58 of 120
58. Question
Which one of the following statements is correct with respect to immunity ?
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Question 59 of 120
59. Question
Which one of the following sets of items in the options 1 – 4 are correctly categorised with one exception in it ?
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Question 60 of 120
60. Question
Which one of the following pairs is wrongly matched ?
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Question 61 of 120
61. Question
Which one of the following is a wrong statement regarding mutations ?
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Question 62 of 120
62. Question
Read the following four statements (A – D)
(A) Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane
(B) In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth
(C) Stamens in flowers of Gloriosa and Petunia are polyndrous
(D) Symbiotic nitrogen-fixers occur in free-living state also in soil How many of the above statements are right ?
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Question 63 of 120
63. Question
Where do certain symbiotic microorganisms normally occur in human body ?
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Question 64 of 120
64. Question
The secretory phase in the human menstrual cycle in also called
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Question 65 of 120
65. Question
Biolistics (gene-gun) is suitable for
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Question 66 of 120
66. Question
A fall in glomeruclar filtration rat (GFR) activates
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Question 67 of 120
67. Question
Represented below is the inheritance pattern of a certain type of traits in humans. Which one of the following conditions could be an example of this pattern ?
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Question 68 of 120
68. Question
Which one of the following cellular parts is correctly described ?
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Question 69 of 120
69. Question
Which one of the following options gives the correct categorisation of six animals according to the type of nitrogenous wastes (A, B, C), they give out ?
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Question 70 of 120
70. Question
Which one of the following characteristics is common both in humans and adult frogs ?
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Question 71 of 120
71. Question
Identify the human developmental stage shown below as well as the related ritght palce of its occurrence in a normal pregnant woman, and select the right option for the two together.
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Question 72 of 120
72. Question
What is the function of germ pore ?
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Question 73 of 120
73. Question
For its action, nitrogenase requires
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Question 74 of 120
74. Question
In genetic engineering, the antibiotics are used
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Question 75 of 120
75. Question
Through their effect on plant growth regulators, what do the temperature and light control in the plants?
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Question 76 of 120
76. Question
What is it that forms the basis of DNA fingerprinting ?
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Question 77 of 120
77. Question
Select the correct statements bout biodiversity
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Question 78 of 120
78. Question
The domestic sewage in large cities
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Question 79 of 120
79. Question
Plants with ovaries having only one or a few ovules, are generally pollinated by
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Question 80 of 120
80. Question
Read the following four statements (A – D)
(A) Colostrum is recommended for the new born because it is rich in antigens
(B) Chikengunya is caused by a Gram negative bacterium
(C) Tissue culture has proved useful in obtaining virus-free plants
(D) Beer is manufactured by distillation of fermented grape juice How many of the above statement are worng ?
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Question 81 of 120
81. Question
The supportive skeletal structures in the human external ears and in the nose tip are examples of
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Question 82 of 120
82. Question
As compared to a dicot root, a monocot root has
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Question 83 of 120
83. Question
Which one of the following organisms is correctly matched with its three characteristics ?
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Question 84 of 120
84. Question
Which one of the following pairs of chemical substances, is correctly categorised ?
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Question 85 of 120
85. Question
Indenfity the molecules (a) and (b) shown below and select the right option giving their source and use
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Question 86 of 120
86. Question
Indentify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres
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Question 87 of 120
87. Question
Which one of the following statements is worng ?
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Question 88 of 120
88. Question
The idea of mutations was brought forth by
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Question 89 of 120
89. Question
Read the following four statements (A – D)
(A) In transcription, adenosine pairs with uracil
(B) Regulation of lac operon by repressor is referred to as positive regulation
(C) The human genome has approximately 50,000 genes
(D) Haemophilia is sex-linked recessive disease
How many of the above statements are right ?
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Question 90 of 120
90. Question
Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them ?
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Question 91 of 120
91. Question
Two metallic spheres of radii 1 cm and 3 cm are given charges of –1 × \(10^{–2} C and 5 × 10^{–2}\) C, respectively. If these are connected by a conducting wire, the final charge on the bigger sphere is
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Question 92 of 120
92. Question
A proton carrying 1 MeV kinetic energy is moving in a circular path of radius R in uniform magnetic field. What should be the energy of an \(\alpha-particle\) to describe a circle of same radius in the same field?
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Question 93 of 120
93. Question
A circular platform is mounted on a frictionless vertical axle. Its radius R = 2 m and its moment of inertia about the axle is 200 kg \(m_{2}\) . It is initially at rest. A 50 kg man stands on the edge of the platform and begins to walk along the edge at the speed of 1 ms\(^{–1}\) relative to the ground. Time taken by the man to complete one revolution is
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Question 94 of 120
94. Question
The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagating in vacuum is equal to
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Question 95 of 120
95. Question
A magnetic needle suspended parallel to a magnetic field requires \(\sqrt{3}\) J of work to turn it through 60°. The torque needed to maintain the needle in this position will be
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Question 96 of 120
96. Question
A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away for the mirror. The length of the image is
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Question 97 of 120
97. Question
The moment of inertia of uniform circular disc is maximum about an axis perpendicular to the disc and passing through
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Question 98 of 120
98. Question
Which one of the following plots represents the variation of gravitational field on a particle with distance r due to a thin spherical shell of radius R? (r is measured from the centre of the spherical shell)
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Question 99 of 120
99. Question
To get an output Y = 1 in given circuit which of the following input will be correct:
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Question 100 of 120
100. Question
The equation of a simple harmonic wave is given by \(Y = 3sin\frac{\pi}{2}(50t-x)\) where x and y are in metres and t is in seconds. The ratio of maximum particle velocity to the wave velocity is
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Question 101 of 120
101. Question
A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and area of each plate is A, the energy stored in the capacitor is
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Question 102 of 120
102. Question
The power dissipated in the circuit shown in the figure is 30 Watts. The value of R is
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Question 103 of 120
103. Question
If\( v_{e} v_{o} \) is orbital velocity of a satellite for orbit close tot he earth’s surface, then these are related by
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Question 104 of 120
104. Question
A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100% more than the previous height, the momentum when it hits the ground will change by
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Question 105 of 120
105. Question
An ideal gas goes from state A to state B via three different processes as indicated in the P-V diagram If \(Q_{1} , Q_{2} , Q_{3} indicate the heat absorbed by the gas along the three processes and \DeltaU_{1} , \DeltaU_{2} , \DeltaU_{3}\) indicate the change in internal energy along the three processes respectively, then
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Question 106 of 120
106. Question
Two radiations of photons energies 1 eV and 25 eV, successively illuminate a photosensitive metallic surface of work function 0.5 eV. The ratio of the maximum speeds of the emitted electrons is
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Question 107 of 120
107. Question
For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index
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Question 108 of 120
108. Question
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Question 109 of 120
109. Question
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Question 110 of 120
110. Question
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Question 111 of 120
111. Question
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Question 112 of 120
112. Question
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Question 113 of 120
113. Question
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Question 114 of 120
114. Question
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Question 115 of 120
115. Question
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Question 116 of 120
116. Question
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Question 117 of 120
117. Question
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Question 118 of 120
118. Question
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Question 119 of 120
119. Question
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Question 120 of 120
120. Question
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