Tuesday, 29 December 2015

General Science Physics -6

76. A type of stone that can float on water:
(b) Limestone       
(c) Pumice stone        
(d) Gem stone
Answer: (c)

77. The expected energy of electrones at absolute zero is called:
(a)Work function                    
(b) Potential energy
(c) Emission energy                
(d)  Fermi Energy
Answer: (d)
78. The freezer in a refrigerator is fitted near the top:
(a) to keep it away from the heat compressor which is near the bottom
(b) because of convenience
(c) so that it can cool the whole interior by setting up convection currents
(d) without any specific purpose
Answer: (c)

79. Voyager I is related to which country?
(a)China           (b) India             (c) Russia           (d)   USA
Answer: (d)

80. It is difficult to work on ice because of:
(a)Absense of friction             
(b) More friction
(c) Less inertia                   
(d) Abesense of inertia
Answer: (a)

81. Special Theory of Relativity was proposed in:
(a)1900      (b) 1902     (c) 1903       (d)  1905
Answer: (d)
82. Kaleidoscope is based on the principle of:
(a)Reflection                                     (b) Multiple Reflection
(c) Total internal reflection          (d)  Refraction
Answer: (b)

83. The most common use of silicon hydrogels in making which among the following?
(a)Surgery equipment                     (b) Breast transplants
(c) Contact lenses                            (d) Capsules of medicines
Answer: (c)

84. ‘Centrino’ is related to:
(a) Photography                         (b) Mobile technology
(c) Bio technology                      (d)  Missile technology
Answer: (b)
85. Which physical property does not change with quality?
(a)Volume         (b) Weight         (c) Mass                 (d) Density
Answer: (d)

86. The energy that travels through telephone line:
(a)Radio energy                    (b) Mechanical energy
(c) Electrical energy              (d) Sound energy
Answer: (c)

87. The focal length of a concav lens:
(a)Negative                                                        (b) Positive
(c) Either negative or positive                       (d) None of these
Answer: (a)

88. The process by means of which we can smell the fish being fried in a neighbour’s home is called:
(a)Diffusion          (b) Effusion        (c) Intrusion           (d) Distribution
Answer: (a)

89. Vulcanisation of rubber is done to make it:
(a)Shining         (b) Softer        (c) Rigid                  (d) Durable
Answer: (d)

90. Which of the following is a physical change?
(a)Formation of curd from milk                 (b) Breaking of a glass bottle
(c)Corrosion of photo frame                         (d) Ripening of grapes

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