Question

Carbon monoxide is a pollutant because it:

• A. React with oxygen
• B. Inhibits glycolysis
• C. Makes nervous system inactive
• D. Reacts with hemoglobin

Answer 1

The correct option is D

Reacts with hemoglobin

Explanation for correct option:

Option D

• Carbon monoxide is a very poisonous gas.
• Carbon monoxide($\mathrm{CO}$) is dangerous because it combines with hemoglobin to form a stable compound, called carboxyhemoglobin.
• Due to its formation, the transport of oxygen from the lungs to the cells is restricted.
• When the level of carbon monoxide reaches 1300 ppm, it is fatal and may cause death.

Therefore, option D is correct.