Question

We breath out air which is rich in

• A. Nitrogen.
• B. Oxygen and carbon dioxide.
• C. Carbon dioxide.
• D. None of the above.

Answer 1

The correct option is C Carbon dioxide.

Breathing the physical process of respiration where breathing-in and breathing-out of various gases take place.

While exhaling, the carbon dioxide collected from various parts of the body is the major gas that is thrown out of the body. Since carbon dioxide is one the most abundant waste product formed in the body, the exhaled air is rich in carbon dioxide.

Therefore, the correct answer is option C.