Which of the following represent the suitable condition for the liquefaction of gases?

The latent heat of vaporization of water is:

Which one of the following set of phenomena would increase on raising the temperature?

During summer days, water kept in an earthen pot(pitcher) becomes cool because of the phenomenon of:

On converting 25°C, 38°C and 66°C to Kelvin scale, the correct sequence of temperatures will be: