Question

Which of the following is\are correct with respect to carbon monoxide?

(i) It is released due to incomplete combustion of fuels.

(ii) It does not affect humans.

(iii) It is a poisonous gas.

(iv) It reduces oxygen-carrying capacity of the blood.

(v) It is sometimes released from vehicles.

• A. (i), (ii) and (v)
• B. (i), (iii), (iv) and (v)
• C. (i), (iv) and (v)
• D. (ii) and (v)

Answer 1

The correct option is B

(i), (iii), (iv) and (v)

Carbon monoxide is a harmful gas that is formed due to incomplete combustion of fuels. When inhaled, it forms a complex compound in the blood that reduces the oxygen-carrying capacity of the blood. Vehicles today have a device called catalytic converter that tries to eliminate the harmful CO emitted by converting it into comparatively less harmful carbon dioxide but not all vehicles have this device.