true or false:
Heat is necessary to saturate the air with vapour

true or false: 1J = 4.18 cal

Answer the following questions : The mass of water vapour in air enclosed in a certain space is 60 g and the mass of water vapour needed to saturate the same air with water vapour under the same conditions is 100g. What is the corresponding % relative humidity?

When a given volume of air contains maximum possible amount of water vapour, it is said to be saturated with vapour at that temperature.

true or false: Specific heat is denoted by letter 'h'

true or false: In CGS system,heat is measured in joules

true or false: Presence of moisture in air is called humidity

Answer the following questions : When air is said to be unsaturated with water vapour?

Answer the following questions : When is air said to be saturated with water vapour ?

True or false Electric power (P)=VI

true or false: Water vapour content of air is measured by relative humidity.