Tobacco smoke contains carbon monoxide which

Options

A. Reduces the oxygen-carrying capacity of blood
B. Causes gastric ulcers
C. Raises blood pressure
D. Is carcinogenic

Answer

A

Explanation

Carbon monoxide is colourless, odourless and tasteless gas that is lighter than air and can be fatal to life. It has affinity for hemoglobin than oxygen does. It displaces oxygen and quickly binds so very little oxygen is transported through body cells.