Question

State whether the following statements are true or false.
A person can expel all the air from lungs by a forceful expiration.

• A. True
• B. False

Answer 1

The correct option is B False

Even after the most forcible expiration possible some amount of air remains in the lungs. This is known as the residual volume and is about 1200 ml. So, a person cannot expel all the air from the lungs by a forceful expiration. So, the correct option is 'False'.