56. Which of the following bases is not present in DNA?

- Adenine
- Thymine
- Cytosine
**Uracil**

57. Which of the following is an example of ketohexose?

- Mannose
- Galactose
**Fructose**- Maltose

58. Nylon-6 is made from

- 1, 3-Butadiene
- Chloroprene
- Adipic acid
**Caprolactam**

59. 2-Acetoxybenzoic acid is

- Antiseptic
**Aspirin**- Antibiotic
- Dye

60. A drug which is antipyretic as well as analgesic is

- Chloroquine
- Penicillin
- Chloropromazine
**Para acetamidophenol**

61. Parsec is a unit of

- Time
**Distance**- Frequency
- Angular acceleration

62. The number of significant figures in 30.00 m are

- 1
- 2
- 3
**4**

63. The idea of calculus was given by

**Newton**- Marconi
- Einstein
- Max Planck

64. An athlete completes a circular track of radius 70 meters in 20s. the average velocity of the athlete is

**Zero**- 11 ms
^{-1} - 22 ms
^{-1} - 44 ms
^{-1}

65.If the vectors are co-planer, then the minimum number of vectors whose resultant is zero is

- 2
**3**- 4
- Infinite

66. Which of the following is a scalar quantity?

- Electric field
- Velocity
- Angular momentum
**Electric potential**

67. The force of 5 N acts on a body of weight 9.8 N. the acceleration of the body is

- 0.5 ms
^{-2} - 1.0 ms
^{-2} **5 ms**^{-2}- 49 ms
^{-2}

68. In a uniform circular motion, the angle between the velocity and acceleration is

- 0°
- 30°
- 45°
**90**°

69. A man pulls a bucket out of a well by means of a rope. The work done by the gravity is

- Zero
- Positive
**Negative**- None of these

70. If the momentum of a body increases by 0.01%, then its kinetic energy will increase by

- 0.01%
**0.02%**- 0.03%
- 0.04%

71. For which of the following does the centre of mass lie outside the body?

- A solid sphere
- A solid cylinder
- A disc
**A ring**

72. Moment of inertia of a body does not depend upon its

- Shape
- Mass
**Angular velocity**- Axis of rotation

73. Angular momentum is

- Polar vector
**Axial vector**- Scalar
- None of these

74. The acceleration of a solid cylinder rolling down an inclined plane of inclination 30° is

- g/2
- 2g/2
**g/3**- g/4

75. The force of gravitation is

- Repulsive
**Conservative**- Electrostatic
- Non-conservative

76. If ratio of radius of mars and earth around sun is 1.526, then time period of mars is

**1.89 years**- 32 years
- 45 years
- 49 years

77. Kepler’s second law is based on

- Newton’s second law
- Newton’s third law
- Special theory of relativity
**Conservation of angular momentum**

78. Height of geostationary satellite is approximately

- 360 km
- 3,600 km
**36,000 km**- 3,60,000 km

79. When a body is taken from poles to equator on the earth, its weight

- Increases
**Decreases**- Remains the same
- None of these

80. Young’s modulus of elasticity of a perfectly rigid body is

- Unity
- Zero
**Infinity**- None of these

81. Streamline flow is more likely for liquids with

- low viscosity
- low density
- high velocity
**both (B) and (C)**

82. The density of water is maximum at

- 0 °C
**4 °C**- 100 °C
- None of these

83. For an ideal bad conductor of heat, the value of thermal conductivity is

**Zero**- One
- Infinity
- None of these

84. The breaking stress of a wire depends upon its

- Length
- Radius
**Material**- Shape

85. Bernoulli’s theorem is a consequence of conservation of

- Mass
- Linear momentum
**Energy**- Angular momentum

86. The temperature at which a black body ceases to radiate energy is

**0 K**- 100 K
- 273 K
- None of these

87. When you make ice cubes, the entropy of water

- Increases
**Decreases**- Does not change
- None of these

**Answer: C**

89. Water waves are

- Longitudinal waves
- Transverse waves
**Combination of longitudinal and transverse waves**- None of these

90. The maximum and minimum intensities of two sources is 4:1. The ratio of the amplitudes is

**3:1**- 1:3
- 1: √ 3
- √ 3:1

91. If there are n capacitors is parallel connected to V volt source, then the energy stored is equal to

- CV
**1/2 n CV**^{2}- CV
^{2} - 1/2n CV
^{2}

92. In bringing an electron towards another electron, the electrostatic potential energy of the system

**Increases**- Decreases
- Remains unchanged
- Becomes zero

93. If the capacitors of 2,3 and 6 µF are connected in a series to a 10 V source. The charge on 3 µF

capacitor is

- 5 µC
**10 µC**- 12 µC
- 15 µC

94. A stationary charge produces

**An electric field only**- A magnetic field only
- Both electric and magnetic fields
- An electromagnetic wave

95. The resistance of a wire id R. if the lengthy of the wire is doubled, then its resistance will be

- R
- 2R
**4R**- 0.25R

96. Which of the following quantities do not change, when a resistor is heated by passing current through it?

- Resistance
- Resistivity
- Drift velocity
**Number of free electrons**

97. In which type of material the magnetic susceptibility does not depend on temperature?

**Diamagnetic**- Paramagnetic
- Ferromagnetic
- Ferrite

98. Angle between magnetic meridian and geographical meridian is called

- Angle of dip
**Angle of declination**- Angle of depression
- Both (A) and (B)

99. If the speed of rotation of a dynamo is doubled, then the induced e.m.f. will

- Become half
**Become double**- Become four times
- Remain unchanged

100. The best material for the core of a transformer is

- Stainless steel
- Mild steel
- Hard steel
**Soft iron**

101. Eddy currents are produced in

- Induction furnace
- Electromagnetic brakes
- Speedometer
**All of these**

102. Lenz’s law is a consequence of the law of conservation of

- Charge only
- Momentum only
**Energy only**- Energy and momentum

103. The self-inductance of a straight conductor is

**Zero**- Infinity
- Very large
- Very small

104. In a.c. circuit, the power is consumed only in

- Inductance
- Capacitance
**Resistance**- All of these

105. In an ordinary electric heater, if the length of the coil is reduced to half, a given quantity of water will boil in

- More time
**Less time**- Same time
- None of these

106. What is immaterial for an electric fuse?

- Its specific resistance
- Its radius
**Its length**- Currents flowing through it

107. In an electrolyte, electric conduction is due to the flow of

- Electrons
- Negative ions only
- Positive ions only
**Both the negative and positive ions**

108. When current flows through a conductor, heat is produced. This is called

- Seebeck effect
- Thomson effect
- Peltier effect
**Joule effect**

109. For a thermocouple, the thermos e.m.f. may be

- Zero
- Positive
- Negative
**Any of these**

110. A diminished virtual image can be produced only with

- A plane mirror
- A concave mirror
**A convex mirror**- All of these