EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -The correct answer is (C) Catalytic converter. Note: The converters are used to decrease the release of poisonous gases and particulate matter in the atmosphere which affects the air quality.

Detailed explanation-2: -A device can be fitted into the vehicle to reduce air pollution. This device is a catalytic converter. A catalytic converter is an exhaust emission control device that converts toxic gases to less toxic pollutants by catalyzing a redox reaction.

Detailed explanation-3: -The use of alternative fuels, catalytic converter and emission reduction is controlling the automobile exhaust pollution. The emission control system in automobiles employed to limit the discharge of noxious gases from the internal-combustion engine.

Detailed explanation-4: -So the use of unleaded petrol and compressed natural gas in automobiles reduce air pollution.

Detailed explanation-5: -Latest techniques of air pollution control are: Combustion – This method is applied when the pollutants are organic gases or vapours. The organic air pollutants are exposed to ‘flame or catalytic combustion’ when they are converted to less harmful product carbon dioxide and product water.