Question

Statement 1: Lungs become empty after forceful expiration
Statement 2: The forcefully exhaled air is called residual volume of air.

• A. Only statement 1 is true
• B. Only statement 2 is true
• C. Both statement 1 and statement 2 are true
• D. Both statement 1 and statement 2 are false

Answer 1

The correct option is D Both statement 1 and statement 2 are false

Lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released. Some volume of air is present in the lungs even after forceful expiration.