Question

A large quantity of one of the following is removed from our body by lung.

• A. Only CO₂
• B. only O₂
• C. both (a) and (b)
• D. ammonia

Answer 1

The correct option is A

Only CO₂

Explanation for correct option:-

1. In an average person, less than one liter of water is excreted by the skin as sweat, large intestine as feces (ammonia), and kidney as urine.
2. Thus, CO₂ in a large quantity is removed from our bodies by the lungs.
3. The correct option is (a) CO₂

Explanation for incorrect option:-

Option(b)

1. O₂is not removed from our body by the lung so it is an incorrect answer.

Option(c)

1. Both (a) and (b) is not the correct answer.

Option(d)

1. Ammonia is not removed from our body by the lung so it is an incorrect answer

Hence, the correct option is (a) CO₂