Question

Prolonged exposure to the fumes released by incomplete combustion of coal may cause death of a human because of

• A. Inhalation of unburnt carbon particles.
• B. Continuous exposure to high temperature.
• C. Increased level of carbon monoxide.
• D. Increased level of carbon dioxide.

Answer 1

The correct option is A Inhalation of unburnt carbon particles.

When the coal is burned for a longer time, there is a release of the carbon particles into the atmosphere. When the air is inhaled during the process of breathing, the particles enter the lungs and gets deposited. This particle blocks the airways and also decrease the surface for the exchange of the gases. This results in the development of chronic respiratory diseases which causes the death of the individual.

Thus, the correct answer is option A.