Question

Consider the following statements carefully.
Statement-1: Evaporation is a bulk phenomenon and boiling is a surface phenomenon.
Statement-2: Gases can be liquefied by applying high pressure and low temperature.
Now, choose the correct option.

• A. Both the statements are correct
• B. Both the statements are incorrect
• C. Only statement-1 is correct
• D. Only statement-2 is correct

Answer 1

The correct option is D Only statement-2 is correct

Evaporation is the process of change of a liquid into vapours at any temperature below its boiling point involving only the surface particles. Thus, it is a surface phenomenon. Boiling is a bulk phenomenon as particles from the bulk of the liquid gain enough energy to change into the vapour state. When a high pressure is applied and the temperature is reduced, a gas can be liquefied.
Hence, the correct answer is option (d).