Question

Exhaled air contains more

• A. Oxygen
• B. Carbon dioxide
• C. Nitrogen
• D. Oxygen and nitrogen

Answer 1

The correct option is B

Carbon dioxide

The correct option is B:

Explanation of the correct option:

1. The process of expelling out carbon dioxide-rich air is called exhalation.
2. During exhalation, the amount of carbon dioxide given out is more than the amount of carbon dioxide inhaled.

Explanation for incorrect options-

Option A:

1. The process of taking in oxygen-rich air is called inhalation.
2. Amount of oxygen in inhaled air is more than the amount of oxygen in exhaled air.

Option C:

1. The amount of nitrogen is the same in inhaled and exhaled air.

Option D:

1. The amount of oxygen is more in the inhaled air and the amount of nitrogen is the same in inhaled and exhaled air.

Final answer: Exhaled air contains more carbon dioxide