On converting 308K, 329K and 391K to Celsius scale, the correct sequence of temperatures will be:

The conversion of a solid into vapours without passing through the liquid state is called:

The evaporation of water increases under the following conditions:

Which of the following energy is absorbed during the change of state of a substance?

Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air?

(i) increase in pressure

(ii) increase in temperature

(iii) decrease in pressure

(iv) decrease in temperature