GGSIPU CET Previous Year Papers

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Here is the GGSIPU CET exam paper

1. Following two wave trains are approaching each other. y1 = a sin 200 π t y2 = a sin 208 π t The number of beats heard per second is :

A. 8

B. 4

C. 1

D. 0

2. One of the geo-stationary satellites of India is vertically above

A. New Delhi

B. Mumbai

C. Allahabad

D. None of these

3. Light of wavelength 2400 x 10-10 m in air will become light of wavelength in glass (μ = 1.5) equal to

A. 1600 x 10-10 m

B. 7200 x 10-10 m

C. 1080 x 10-10 m

D. none of these

4. The ratio of secondary to primary turns is 4:5. If power input is P what will be the ratio of power output (neglect all losses) to power input ?

A. 4:9

B. 9:4

C. 5:4

D. 1:1

5. Lenz's law applies to

A. electrostatics

B. lenses

C. electro-magnetic induction

D. cinema slides

6. If a proton and anti-proton come close to each other and annihilate how much energy will be released ?

A. 1.5 x 10-10 J

B. 3 x 10-10 J

C. 4.5 x 10-10 J

D. none of these

7. If Sn is doped with As what will be the result ?

A. n-type semi-conductor

B. p-typesemi-conductor

C. intrinsic semi-conductor

D. none of these


8. A charge is placed at the centre of a cube what is the electric flux passing through one of its faces?

A. (1/6) x (q/ε0)

B. q/ε0

C. 6q/ε0

D. None of these

9. What is the degree of freedom in case of a mono atomic gas ?

A. 1 B. 3 C. 5 D. None of these

B. p-type semi-conductor

C. intrinsic semi- conductor

D. none of these

10. The ratio of secondary to primary turns is 4:5. If power input is P, what will be the ratio of

power output (neglect all losses) to power input ?

A. B. C. D.

11. Speed of recession of galaxy is proportional to its distance

A. directly B. inversely C. exponentially D. none of these

12. If a substance goes in a magnetic field and is pushed out of it, what is it ?

A. Paramagnetic B. Ferromagnetic C. Diamagnetic D. Antiferromagnetic

13. Which is not a scalar quantity?

A. Work B. Power C. Torque D. Gravitational

14. Minimum energy required to excite an electron in a Hydrogen atom in ground state is :

A. -13.6 eV B. 13.6 eV C. 10.2 eV D. 3.4 eV

15. If Gravitational Constant is decreasing in time, what will remain unchanged in case of a

satellite orbiting around earth ?

A. Time period B. Orbiting radius C. Tangential velocity D. Angular velocity

16. If a transparent medium of refractive index μ = 1.5 and thickness t = 2.5 x 10-5 m is inserted

in front of one of the slits of Young's Double Slit experiment, how much will be the shift in the

interference pattern ? The distance between the slits is 5.0 x 10-3 cm and that between slits and

screen is 100 cm.

A. 5 cm B. 2.5 cm C. 0.25 cm D. 0.1 cm

17. How does light propagate in optical fibres?

A. Total internal

reflection B. Refraction C. Reflection D. None of these

18. Dispersion of light is due to

A. wavelength B. intensity of light C. density of medium D. none of these

19. Which of the following conclusions is correct regarding

a stationary body?

A. No force is acting on the body

B. Vector sum of forces acing on the body is zero

C. The body is in vacuum

D. The forces acting on the body do not constitute a couple

20. Energy released in stars is due to

A. Fission B. Fusion C. Combustion D. Chemical reaction

21. 13 days is the half-life period of a sample. After how many days, the sample will become

1/16th of the original substance ?

A. 52 B. 3.8 C. 3 D. none of these

22. Absolute zero is the temperature at which

A. water solidifies B. all gases become liquid

C. motion of molecules becomes minimum D. everything solidifies

23. Motion of liquid in a tube is described by

A. Bernaulli's Theorem B. Poiseuille Equation C. Stoke's Law D. Archimedes'

24. Molecular motion shows itself as

A. Temperature B. Internal Energy C. Friction D. Viscosity

25. Which is this gate ?

A. AND B. NAND

C. OR D. NOR

26. Energy bands in solids are a consequence of

A. Ohm's Law B. Pauli's Exclusion Principle

C. Bohr's Theory D. Heissenberg's Uncertainty Principle

27. A boy of mass M stands on the floor of an elevator moving downwards with an acceleration

a which is less than g. The force exerted by the boy on the floor of the elevator is

A. Mg x Ma B. g + a C. Mg – Ma D. Mg + Ma

28. A body A of mass m1 exerts a force on another body B of mass m2. If the acceleration of B be

a2, then the acceleration (in magnitude ) of A is

A. m2/m1 (a2) B. m1m2 a2 C. m1/m2 (a2) D. (m1 + m2) a2

29. What does not change when sound enters from one medium to another ?

A. Wavelength B. Speed C. Frequency D. none of these

30. Resolving power of a microscope depends upon

A. wavelength of light used, directly B. wavelength of light used, inversely

C. frequency of light used D. focal length of objective

31. An astronaut of weight Mg is in a rocket accelerating upward with an acceleration of 4g. The

apparent weight of the astronaut will be

A. 5Kg B. 4Kg C. Mg D. zero

32. One proton beam enters a magnetic field of 10-4 m/s normally, sp. charge = 1011 C/kg,

velocity = 109

A. 0.1 m B. 100 m C. 10 m D. none of these

33. If a black body radiates 20 calories per second at 227°C, it will radiate at 727°C

m/s. What is the radius of the circle describe by it ?
A. 10 calories per

second

34. If a carnot engine is working with source temperature equal to 227°C and its sink

temperature is at 27°C, its efficiency will be

A. 20% B. 10% C. 67% D. 50%

35. If the frequency of an oscillating particle is n, then the frequency of oscillation of its potential

energy is

A. n B. 2n C. n/2 D. 4n

36. If an electron oscillates at a frequency of 1 GHz, it gives :

A. X-rays B. Micro-waves

C. Infra-red rays D. None of these

37. Earth's atmosphere is richest in

A. Ultra-violet rays B. Infra-red rays C. X-rays D. Micro-waves

38. Cathode rays consist of

A. Photons B. Electrons C. Protons D. α -particles

39. A body of mass m1 is moving with a velocity V. It collides with another stationary body of

mass m2. They get embedded. At the point of collision, the velocity of the system

A. increases B. decreases but does not become zero

C. remains same D. becomes zero

40. One projectile moving with velocity V in space, gets burst into 2 parts of masses in the ratio

1:2. The smaller part becomes stationary. What is the velocity of the other part ?

A. 4V B. V C. 4V/3 D. 2V/3

B. 80 calories per

second

C. 320 calories per

second D. none of these

41. A thief steals a box of weight W & jumps from the third floor of a building. During jump, he

experiences a weight of

A. W B. 3W C. 1.5W D. zero

42. Two electron beams are moving parallel in space but in opposite directions; then

A. they will attract each other B. they will repel each other

C. no interaction will take place D. none of these

43. Two wires with resistances R and 3R are connected in parallel, the ratio of heat generated in

2R and R is

A. 1 : 3 B. 2 : 1 C. 1 : 4 D. 4 : 1

44. A wire is drawn such that its radius changes from r to 2r, the new resistance is
A. 2 times B. 4 times C. 8 times D. 1/16 times

45. In solids, inter-atomic forces are

A. totally repulsive B. totally attractive

C. combination of (a) and (b) D. none of these

46. When horse starts running all of a sudden, the rider on the horse back falls backward because

A. he is taken aback

B. he is afraid

C. due to inertia of rest, the upper part of his body remains at rest

D. due to inertia of motion, the lower part of his body comes in motion

47. What should be the minimum velocity at the highest point of a body tied to a string, so that

the string just does not slack ?

A. √ (Rg) B. √ (5Rg) C. (R/g)3/2 D. √ (2Rg)

48. If a person standing on a rotating disc stretches out his hands, the speed will:

A. increase B. decrease

C. remain same D. none of these

49. EMF is most closely related to

A. mechanical force B. potential difference C. electric field D. magnetic field

50. Planetary system in the solar system describes

A. conservation of energy B. conservation of linear momentum

C. conservation of angular momentum D. none of these

51. Lenz's law is based upon

A. energy B. momentum C. angular momentum D. inertia

52. Faraday's second law states that mass deposited on the electrode is directly proportional to

A. atomic mass B. atomic mass x

53. Unit of power is

A. kilowatt hour B. kilowatt per hour C. kilowatt D. erg

54. Power can be expressed as

A. F.v B. 1/2 (Fv2

55. Units of coefficient of viscosity are

A. Nms-1 B. Nm2

velocity C. atomic mass/valency D. valency

) C. F.t D. F x v

-1 C. Nm-2 s D. Nms-2

s
56. Dimensions of torque are

A. MLT-2 B. ML2

57. A body of weight mg is hanging on a string, which extends its length by l. The work done in

extending the string is

A. mg l B. mg l/2 C. 2 mg l D. none of these

58. The water droplets in free fall are spherical due to

A. gravity B. viscosity C. surface tension D. inter-molecular

59. A ball of mass 1Kg is accelerating at a rate of 1ms-2. The rate of change of momentum is

A. 1 Kg ms-2 B. 2 Kg ms-2 C. 3 Kg ms-2 D. 4 Kg ms-2

60. A body orbitting around earth at a mean radius which is two times as great as the parking

orbit of a satellite. The period of the body is

A. 4 days B. 2√ 2 days C. 16 days D. 64 days

61. Gamma rays are

A. high energy electrons B. low energy electrons

C. high energy electro-magnetic waves D. high energy positrons

62. Which is the most abundant metal in the earth's crust?

A. Fe B. Al C. Ca D. Na

63. Which one does not give a precipitate with excess of NaOH?

A. ZnSO4 B. FeSO4 C. AgNO3 D. HgCl2

64. What volume of CO2 will be liberated at NTP of 12 gm of carbon is burnt in excess of

oxygen?

A. 11.2 litres B. 22.4 litres C. 2.24 litres D. 1.12 litres

65. Which base is found only in nucleotides of RNA?

A. Adenine B. Uracil C. Guanine D. Cytosine

66. Ascorbic acid is the chemical name of

A. Vitamin B6 B. Vitamin A C. Vitamin C D. Vitamin D

67. A hydrocarbon has carbon and hydrogen. Its molecular weight is 28. Its possible formula

would be
A. C3H6 B. C2H4 C. CH4 D. C4H8

68. The first Noble Prize in chemistry was given to

A. Faraday B. Cnrizzaro C. Mendeleevs D. Moseley

69. Four different colloids have the following gold number. Which one has its most effective

action?

A. 10 B. 30 C. 20 D. 40

70. Which is an example of thermosetting polymer?

A. Polythene B. PVC C. Neoprene D. Bakelite

71. The number of unpaired electrons in ferrous ion is

A. 3 B. 2 C. 4 D. 5

72. Strongest reducing agent is

A. K B. Mg C. Al D. Ba

73. Which of the following is man-made element?

A. Ra B. U C. Np D. C – 4

74. Which of the following statements is/are correct?

A. Boiling point of alkylhalide is greater than its

corresponding alkane

B. In water, solubility of CH3OH > C2H5OH >

C6H5OH

C. Aniline is a weaker base than NH3

D. All of the above

75. Which amine of the following will not answer Carbylamine reaction?

A. Ethylamine B. Methylamine C. Dimethylamine D. Phenylamine

76. Tollen's reagent can be used to detect

A. (CH3)2 – CHOH B. CH3 – CO.CH3 C. CH3CH2CHO D. CH3OCH3

77. Glycerol on heating with Potassium bisulphate yields

A. Acetone B. Glyceraldehyde C. Acrolein D. Propanol

78. Salicylic acid on heating with sodalime gives

A. Benzene B. Calcium salicylate C. Benzoic acid D. Phenol

79. Which one of the following will not give iodoform test?

A. Ethanol B. Ethanal C. 2-propanone D. None of these

80. The rusting of iron is catalysed by

A. Fe B. O2 C. Zn D. H+

81. 100 ml of a liquid A was mixed with 25 ml of a liquid B to give non-ideal solution of A-B

mixture. The volume of this mixture will be

A. 75 ml B. 125 ml exact

C. fluctuating between 75 ml and 125 ml D. close to 125 ml but not to exceed 125 ml

82. IUPAC name of a compound having the formula (CH3)3 C - CH = CH2 is

A. 3, 3 - dimethyl - l - butene B. 1, 1 - dimethyl - 3 - butene

C. 1,1, 1 - dimethyl - 2 - propene D. 3, 3, 3 - dimethyl - 1 - l propene

83. Which of the following compounds will be optically active?

A. (OH3)2 – CHOH B. CH3 - CH2 - CH2 -

84. The major components of brass are

A. Zn and Sn B. Cu and Zn C. Fe and Ni D. Zn and Fe

85. Lunar castic is

A. Silver Chloride B. Silver Nitrate C. Sodium Hydroxide D. Potassium Nitrate

86. When hot iron is exposed in hot water vapour, the compound formed is

A. FeO B. Fe2O4 C. Fe3O4 D. Fe2 (OH)2

87. Which of the following halide is not oxidised by MnO2?

A. F B. Cl -

88. The outermost electronic configuration of the most electronegative element is

B. ns2

A. ns2

np3

89. Shape of CO2 is

A. tetrahedral B. trigonal C. bent D. linear

90. The catalyst used in the manufacture of H2SO4 by contact process is

A. Al2O3 B. Cr2O3 C. V2O5 D. MnO2