Question

Assertion: Gases are highly compressible than solids and liquids.

Reason: Interatomic or intermolecular distance in gases is higher than those in liquids.

• A. Both the assertion and the reason are true and the reason is the correct explanation of the assertion.
• B. Both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
• C. Assertion is true but the reason is false.
• D. Assertion is false but the reason is true.

Answer 1

The correct option is A Both the assertion and the reason are true and the reason is the correct explanation of the assertion.

When heated, the atoms in a liquid or gas gain energy and are forced further apart. The extent of expansion varies from substance to substance. For a given rise in temperature, a liquid will have more expansion than a solid and a gaseous substance has the highest expansion when compared with the other two.

On the other hand, gases have more interatomic and intermolecular distances than in liquids. Hence, it is easy to compress a gas than a liquid or a solid. Therefore, both the assertion and the reason are true and the reason is the correct explanation of the assertion.