76.  Therm is the unit of -

77.  Why Boiling Point of water decrease with Altitude?

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

79.  Refrigerator Protects the food from contamination because -

80.  Relative Humidity is Expressed in terms of -

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

82.  Rate of cooling depends upon which factor?

83.  Why clouds are float in atmosphere?

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

85.  1st Law of thermodynamics is normally related to

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

87.  Freezing Point of Fresh water is

88.  Kilo watt - Hour is a unit of -

89.  Heat of a Reaction does not depends upon -

90.  A white and smooth surface is -