Ans:
(i) Many respiratory disorders, such as asthma, are caused by unburned carbon particles created by fossil fuels such as wood, coal, and petroleum.
(ii) Carbon monoxide CO is a very deadly gas produced by the incomplete combustion of carbon (fossil) fuel. It can kill people who are asleep in a room with carbon monoxide.
(iii) Carbon dioxide produced by burning fossil fuels contributes to global warming, which is defined as an increase in the temperature of the earth’s atmosphere. Polar ice melts as a result of this.
(iv) Sulphur dioxide and nitrogen oxides are released when fossil fuels such as coal, diesel, and gasoline are burned. These fumes are exceedingly corrosive and suffocating.
Acids are formed when sulphur and nitrogen oxides dissolve in rainwater. Such rain is called acid rain. Acid rain is extremely destructive to crops, buildings, and soil.