A liquid boils when its vapour pressure equals
The atmospheric pressure
Pressure of $76.0 \,cm$ column of mercury
The critical pressure
The dew point of the surroundings
During constant temperature, we feel colder on a day when the relative humidity will be ....... $\%$
An ice cube at temperature $-20^o C$ is kept in a room at temperature $20^o C$. The variation of temperature of the body with time is given by
A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as
Why the cooking is faster in pressure cooker ?