76.  Therm is the unit of -

Answer & Explanation
Heat

77.  Why Boiling Point of water decrease with Altitude?

Answer & Explanation
Low atmospheric pressure

78.  Density of water is 1G/CC. it is strictly valid at -

Answer & Explanation
40C

79.  Refrigerator Protects the food from contamination because -

Answer & Explanation
At its Low temperature Bacteria and Fungus becomes non-reactive

80.  Relative Humidity is Expressed in terms of -

Answer & Explanation
Percent

81.  To produce the Low temperature which of the following principle is used. -

Answer & Explanation
A d i a b a t i c D e m a g n e t i z a t i o n Process

82.  Rate of cooling depends upon which factor?

Answer & Explanation
Temperature difference between body and its surrounding

83.  Why clouds are float in atmosphere?

Answer & Explanation
Low density

84.  Lake Freeze in cold countries in winter, leaving the water underneath at -

Answer & Explanation
40F

85.  1st Law of thermodynamics is normally related to

Answer & Explanation
Law of conservation of energy

86.  A real Gas can act as an ideal gas at -

Answer & Explanation
Low pressure and High temperature

87.  Freezing Point of Fresh water is

Answer & Explanation
00C

88.  Kilo watt - Hour is a unit of -

Answer & Explanation
Energy

89.  Heat of a Reaction does not depends upon -

Answer & Explanation
Physical state of product and Reactant

90.  A white and smooth surface is -

Answer & Explanation
Bad absorber and good reflector of Heat.
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