Which one of the following statements regarding CO gas is correct ?

Options

A. It is produced by the complete combustion of fossil fuels.
B. It combines with haemoglobin to form carbamino-haemoglobin.
C. It impairs oxygen transport resulting in giddiness, headache, asphyxia and even death.
D. All of these

Answer

C

Explanation

Carbon monoxide (CO) is produced due to incomplete combustion of fossil fuels, metallurgical operations, automobile emission, cigarette smoking. CO combines with haemoglobin, produces carboxyhaemoglobin which impairs oxygen transport resulting in headache, decreased vision, cardiovascular disease, asphyxia.