Q.Match the items given in column A and B: Column A
Column B

Matching column A with column B

• (a) Catalytic converter → (ii) Carbon monoxide and nitrogen oxides: fitted in vehicle exhaust systems, a catalytic converter uses platinum-palladium and rhodium catalysts to convert unburnt hydrocarbons, carbon monoxide and nitrogen oxides in exhaust fumes into less harmful carbon dioxide, water, nitrogen and oxygen.
• (b) Electrostatic precipitator → (i) Particulate matter: used in industrial chimneys/stacks, it electrically charges dust and smoke particles so they are attracted to and collected on oppositely charged plates, removing over 99% of particulate matter from the exhaust before it is released.
• (c) Earmuffs → (iii) High noise level: worn by workers in noisy industrial settings, earmuffs (and earplugs) protect hearing by reducing exposure to high noise levels. …

Match each device/site in column A to the type of pollution it is specifically designed to control in column B, based on its known function — vehicle exhaust device, industr …

• Confusing the catalytic converter (controls exhaust gases like CO and NOx) with the electrostatic precipitator (controls particulate/solid matter in smoke) — both are pollution-control devices but for different pollutant types. …