Question

Which of the following gas is released during respiration.

• A. oxygen
• B. Carbon dioxide
• C. Carbon monoxide
• D. Nitrogen

Answer 1

The correct option is B

Carbon dioxide

Explanation for correct option:

Option B

Respiration:

• Respiration is the process by which food is burnt in the presence of oxygen to release energy in our body.
• During the respiration carbon dioxide and water are released.
• Food + water-----→ Carbon dioxide + water + energy

Therefore, option B is the correct option.

Explanation for incorrect option:

• During respiration carbon- dioxide, water, and energy are released.
• Therefore, options A, C, and D are incorrect and option B is correct.