Correct option is C
All the mentioned devices play a role in controlling air pollution from automobiles and industries. They work in different ways to reduce pollutants released into the atmosphere.
Explanation of Each Option:
Wet collector (scrubber):
Wet scrubbers are used in industries to remove particulate matter and gases from exhaust streams by passing them through a liquid, often water. This helps reduce air pollution.
Catalytic converter:
A catalytic converter is fitted in automobiles to reduce harmful emissions like nitrogen oxides (NOₓ), carbon monoxide (CO), and unburned hydrocarbons by converting them into less harmful substances.
Electrostatic precipitator:
An electrostatic precipitator is commonly used in industries to remove fine particulate matter (like dust and smoke) from exhaust gases by applying an electric charge that causes the particles to be attracted to oppositely charged plates.
