Question

Fill in the blank:

A vapour on cooling changes into ______ and on further cooling it changes into solid.

• A. gas
• B. liquid
• C. solid
• D. none of these

Answer 1

The correct option is B liquid

As vapour is cooled, the vapours condense and converts to liquid state. Now if we further cool down the liquid it will change to solid state at its freezing point. This is because on cooling the kinetic energy of the vapour decreases and intermolecular force of attraction increases.