| 1. | For any three sets \( \mathrm{A}, \mathrm{B}, \mathrm{C} \) prove t... | 1,851 | | Counter-Strike: Source
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| 2. | Density ofater is maximum at 4^∘C. Explain. | 1,000 | | Counter-Strike: Source
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| 3. | When the mass and the speed of a body are doubled, the kinetic energy of the body
a. becomes doub... | 986 | | Counter-Strike: Source
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| 4. | The port of Surat and Hoogly was declined by the end of the 18th century.' Explain.
What led to t... | 845 | | Counter-Strike: Source
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| 5. | What makes elections in India democratic?
Explain any four conditions that make election democrat... | 835 | | Counter-Strike: Source
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| 6. | Examine any three inherent defects in the Weimar Constitution.
or Explain the inherent defects of... | 788 | | Counter-Strike: Source
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| 7. | Explain any three steps taken by the Central and State Governments to attract foreign companies t... | 735 | | Counter-Strike: Source
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| 8. | What were the effects of the British Government's decision to abolish the Corn Laws?
or Explain t... | 668 | | Counter-Strike: Source
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| 9. | A cup of coffee cools from \( 90^{\circ} \mathrm{C} \) to \( 80^{\c... | 624 | | Counter-Strike: Source
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| 10. | The velocity of a photon is:
(A) independent of its wavelength
(B) depends on its wavelength
(C)... | 558 | | Counter-Strike: Source
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| 11. | A piece of iron of density 7.8 × 10^3 kg m^-3 and volume 10^-4 m^3 is given. Calculate:
a. Weight... | 520 | | Counter-Strike: Source
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| 12. | ABC is a right triangle such that AB=AC and bisector of angle C intersects the side AB at D. Prov... | 435 | | Counter-Strike: Source
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| 13. | In a ripple tank, 10 full ripples are produced in 1 s. If the distance between the crest and the... | 403 | | Counter-Strike: Source
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| 14. | If P, Q and R are the mid-points of the sides BC, CA and AB of a triangle and AD is the perpendic... | 368 | | Counter-Strike: Source
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| 15. | A photocell connected in an electrical circuit is placed at a distance ' \( d \) ' from a source... | 322 | | Counter-Strike: Source
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| 16. | Consider the following plots of rate constant versus \( \frac{1}{T}... | 317 | | Counter-Strike: Source
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| 17. | AB and AC are two chords of a circle of radius r such that AB=2 AC. Ifand q are the distances of ... | 297 | | Counter-Strike: Source
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| 18. | Consider a rectangle \( A B C D \) having \( 5,7,6,9 \) points in t... | 291 | | Counter-Strike: Source
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| 19. | In the given figure, A B C D is a quadrilateral in which A D=B C and ∠ A D C=∠ B C D. Show that t... | 290 | Show | Counter-Strike: Source
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| 20. | A ladder has rungs 25 cm apart.
(see Fig.
uniformly in length from 45 cm at the
bottom to 25 c... | 276 | | Counter-Strike: Source
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| 21. | A metallic sphere cools from \( 50^{\circ} \mathrm{C} \) to \( 40^{... | 276 | | Counter-Strike: Source
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| 22. | If in the expansion of \( (2 x+5)^{10} \), the greatest term is equal to the middle term, then t... | 216 | | Counter-Strike: Source
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| 23. | Given that \( \vec{A}+\vec{B}+\vec{C}=0 \) out of three vectors two are equal in magnitude and t... | 215 | | Counter-Strike: Source
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| 24. | Can there be displacement of an object in the absence of any force acting on it? Think. Discuss t... | 214 | Discussion | Counter-Strike: Source
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| 25. | A particle moving along \( x \)-axis has acceleration \( f \), at t... | 195 | | Counter-Strike: Source
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| 26. | Turbine pits at the Niagara Falls are 50 m deep. The average power produced is 5,000 hp and the e... | 186 | | Counter-Strike: Source
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| 27. | The sugar industry is now shifting from the North to the South. Mention three reasons for this.
E... | 186 | | Counter-Strike: Source
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| 28. | An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four c... | 185 | | Counter-Strike: Source
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| 29. | The points A(x_1, y_1), B(x_2, y_2) and C(x_3 y_3) are the vertices of ABC.
(i) The median from A... | 180 | | Counter-Strike: Source
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| 30. | A polygon shaped wire is inscribed in a circle of radius \( R \). T... | 176 | | Counter-Strike: Source
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| 31. | The kindergarten teacher has 25 kids in her class. She takes 5 of t... | 172 | | Counter-Strike: Source
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| 32. | If non-parallel sides of a trapezium are equal, prove that it is cyclic. | 169 | | Counter-Strike: Source
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| 33. | A particle at the end of a spring executes S.H.M with a period \( t... | 162 | | Counter-Strike: Source
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| 34. | Explain any three elements which are responsible for population growth.
or Describe the factors t... | 159 | | Counter-Strike: Source
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| 35. | Calculate \( T_{A}, T_{B}, T_{C} \) for the following diagram : (B is the mid point of rope) \( ... | 151 | | Counter-Strike: Source
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| 36. | "The textile industry is the only industry in the country which is self-reliant and complete in t... | 144 | | Counter-Strike: Source
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| 37. | ABCD is a parallelogram. A circle through A, B is so drawn that it intersects AD atand BC at Q. P... | 143 | Vlog | Counter-Strike: Source
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| 38. | "The effects of Non-Cooperation on the economic front were more dramatic." Analyse the statement.... | 141 | | Counter-Strike: Source
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| 39. | Consider a simple \( R C \) circuit as shown in Figure 1.
Process ... | 139 | | Counter-Strike: Source
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| 40. | A ball is thrown vertically upward in a train moving with uniform velocity. The ball will
a. fall... | 137 | | Counter-Strike: Source
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| 41. | How did the abundance of labour in the market affect the lives of the workers in Britain during t... | 135 | | Counter-Strike: Source
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| 42. | Electromeric effect is a
(a) permanent effect
(b) temporary effect
(c) resonance effect
(d) induc... | 129 | | Counter-Strike: Source
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| 43. | A cyclic process for 1 mole of an ideal gas is shown in figure in t... | 128 | | Counter-Strike: Source
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| 44. | The momentum of a body is numerically equal to the kinetic energy of the body. The velocity of th... | 128 | | Counter-Strike: Source
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| 45. | In the given figure,A and P B are the tangents to a circle with centre O. Show that the points A,... | 128 | Show | Counter-Strike: Source
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| 46. | State any two advantages of the multi-party system. In what way is an alliance different from a c... | 124 | | Counter-Strike: Source
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| 47. | What is the percent by mass of titanium in rutile, a mineral that c... | 119 | | Counter-Strike: Source
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| 48. | The difference between two numbers is 14 and the difference between their squares is 448 . Find t... | 118 | | Counter-Strike: Source
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| 49. | 4.4 g of a gas at STP occupies a volume of 2.24 L, the gas can be
(a) O_2
(b) CO
(c) NO_2
(d) C... | 117 | | Counter-Strike: Source
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| 50. | The temperatures of two bodies measured by a thermometer are \( t_{1}=20{ }^{\circ} \mathrm{C} \... | 117 | | Counter-Strike: Source
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| 51. | Two circles touch each other externally. The distance between the centres of the circles is 14 c... | 117 | | Counter-Strike: Source
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| 52. | The brass scale of a barometer gives correct reading at \( 10^{\circ} \mathrm{C} \). The baraome... | 117 | | Counter-Strike: Source
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| 53. | In the given figure, A D and A E are the tangents to a circle with centre O and B C touches the c... | 114 | | Counter-Strike: Source
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| 54. | An engine is approaching a hill at constant speed. When it is at distance of 0.9 km, it blows a ... | 113 | | Counter-Strike: Source
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| 55. | Two particles \( P \) and \( Q \) start from origin and execute Sim... | 110 | | Counter-Strike: Source
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| 56. | Which of the following compounds will show metamerism?
(a) CH_3-CO-C_2H_5
(b) C_2H_5-S-C_2H_5
(c)... | 109 | Show | Counter-Strike: Source
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| 57. | Which of the following is least reactive in a nucleophilic substitution reaction.
(a) (CH_3)_3C-C... | 109 | | Counter-Strike: Source
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| 58. | "Many of our spinners export cotton yarn while apparel manufacturers have to import fabric. " Exp... | 105 | | Counter-Strike: Source
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| 59. | The term "linkage" was coined by (a) G. Mendel (b) W. Sutton (c) T. H. Morgan (d) T. Boveri | 101 | | Counter-Strike: Source
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| 60. | An organic compound A (molecular formula C_2H_4O_2 ) reacts with Na metal to form a compound B an... | 100 | | Counter-Strike: Source
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| 61. | Two tangent segments B C and B D are drawn to a circle with centre O such that ∠ C B D=120^∘. Pro... | 99 | | Counter-Strike: Source
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| 62. | If ABC is an equilateral triangle inscribed in a circle andbe any point on the minor arc BC which... | 98 | | Counter-Strike: Source
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| 63. | The temperature inside a refrigerator is \( t_{2}{ }^{\circ} \mathrm{C} \) and the room temperat... | 89 | | Counter-Strike: Source
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| 64. | A solid having a mass of 400 g has a volume of 250 cm^3. Calculate:
a. The density of the solid... | 87 | | Counter-Strike: Source
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| 65. | Urine is hypertonic
(A) in B owman's capsule.
(B) in \( P C T \).
(C) in the middle of descendin... | 87 | | Counter-Strike: Source
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| 66. | \( \mathrm{CsBr} \) crystallises in a body-centred cubic lattice. T... | 87 | | Counter-Strike: Source
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| 67. | When a biochemical reaction is carried out in laboratory, outside t... | 85 | | Counter-Strike: Source
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| 68. | If heat \( Q \) is added reversibly to a system at temperature \( T... | 85 | | Counter-Strike: Source
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| 69. | \( \lim _{x \rightarrow 0^{+}} \frac{\int_{0}^{x^{2}}(\sin \sqrt{t}... | 84 | | Counter-Strike: Source
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| 70. | Why does Anne think she can confide more in her diary than in people?
Or
What does Anne wish to c... | 82 | | Counter-Strike: Source
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| 71. | Rights are reasonable claims of persons recognised by society and sanctioned by law. Why should t... | 82 | | Counter-Strike: Source
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| 72. | A wire of length \( 2 L \) and radius \( r \) is stretched between \( A \) and \( B \) without t... | 81 | | Counter-Strike: Source
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| 73. | \( 4.0 \mathrm{~g} \) of a gas occupies \( 22.4 \) litres at NTP. T... | 81 | | Counter-Strike: Source
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| 74. | A body weighs \( 700 \mathrm{~g} w t \) on the surface of the earth. How much will it weigh on t... | 78 | | Counter-Strike: Source
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| 75. | There is a visit in a school by Directorate of Education. Girls are asked to prepare a rangoli in... | 78 | | Counter-Strike: Source
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| 76. | A body is moving according to the equation
\( \mathrm{x}=\mathrm{at}+\mathrm{bt}^{2}-\mathrm{ct}... | 77 | | Counter-Strike: Source
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| 77. | The piece of zinc at a temperature of \( 20.0 \mathrm{C} \) weighing \( 65.38 \mathrm{~g} \) is ... | 77 | | Counter-Strike: Source
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| 78. | In the given figure, ∠ C A B=90^∘ and A D ⊥ B C. Show that B D A ∼ B A C. If A C=75 cm, A B=1 m... | 74 | Show | Counter-Strike: Source
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| 79. | Whenas the Ganga Action plan launched?
(A) 1986
(B) 1985
(C) 1971 | 74 | | Counter-Strike: Source
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| 80. | If one root of the quadratic equation \( a x^{2}+b x+c=0 \) is equal to the \( n \)th power of t... | 73 | | Counter-Strike: Source
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| 81. | If a metallic sphere gets cooled from \( 62^{\circ} \mathrm{C} \) t... | 73 | | Counter-Strike: Source
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| 82. | Treatment of ammonia with excess of ethyl iodide will yield
(a) diethylamine
(b) ethylamine
(c) t... | 72 | | Counter-Strike: Source
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| 83. | The density of oxygen gas at \( 25^{\circ} \mathrm{C} \) is \( 1.458 \mathrm{mg} / \) litre at o... | 71 | | Counter-Strike: Source
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| 84. | What "twin obligations" does Mandela mention? What happened to people who tried to perform both t... | 67 | | Counter-Strike: Source
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| 85. | A woman pushes a trunk on a railway platform that has a rough surface. She applies a variable for... | 64 | | Counter-Strike: Source
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| 86. | On learning about Lomov's purpose of visit, Chubukov says about Natalya, "..... as if she won't c... | 64 | | Counter-Strike: Source
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| 87. | A body weighs \( 200 N \) on the surface of the earth. How much will it weigh half way down to t... | 63 | | Counter-Strike: Source
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| 88. | In case of negative work done, the angle between the force and the displacement is
a. 0^∘
b. 45^∘... | 62 | | Counter-Strike: Source
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| 89. | If a constant force acts on a body initially kept at rest, the distance moved by the body in time... | 61 | | Counter-Strike: Source
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| 90. | तरंग सदिश को व्यक्त किया जाता है-
(A) \( \omega=\frac{2 \pi}{T} \)
(B) \( c=v \lambda \)
(C) \( ... | 60 | | Counter-Strike: Source
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| 91. | A planet of volume V and mass M has gravitational acceleration g on its surface. If it expands to... | 58 | | Counter-Strike: Source
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| 92. | Answer the following by appropriately matching the lists based on t... | 57 | | Counter-Strike: Source
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| 93. | The radius of a sphere is 2 r, then its volume will be
(A) 4/3π r^3
(B) 4 π r^3
(C) 8 π r^3/3
(D)... | 57 | | Counter-Strike: Source
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| 94. | Read the following sources and answer the questions that follow
The Movement in the Towns
The mov... | 56 | | Counter-Strike: Source
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| 95. | Esters are sweet-smelling substances and are used in making perfumes. Suggest some activity and t... | 55 | | Counter-Strike: Source
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| 96. | A large truck and a car, both moving with a velocity of magnitude v, collide head on and come to ... | 53 | | Counter-Strike: Source
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| 97. | The voltage of an \( A C \) source varies with time according to th... | 53 | | Counter-Strike: Source
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| 98. | What happens to the force between two objects, if
a. mass of both the objects is tripled.
b. dist... | 53 | | Counter-Strike: Source
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| 99. | Boyle's law may be expressed as:
(A) \( (d P / d V)_{T}=K / V \)
(B) \( (d P / d V)_{T}=-K / V^{... | 51 | | Counter-Strike: Source
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| 100. | Each side of an equilateral triangle measures 8 cm. Find (i) the area of the triangle, correct t... | 51 | | Counter-Strike: Source
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