Match List I with List II
| List I | List II |
|---|---|
| A. Catalytic converter | I. Solid wastes |
| B. Electrostatic precipitator | II. High noise level |
| C. Earmuffs | III. Particulate matter |
| D. Landfills | IV. Carbon monoxide and nitrogen oxide |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → A-IV, B-III, C-II, D-I
(A) Catalytic converter — this matches (IV) Carbon monoxide and nitrogen oxide. Fitted in vehicles, it has platinum, palladium and rhodium as catalysts. It changes unburnt hydrocarbons into CO2 and water, and CO and nitric oxide into CO2 and nitrogen gas.
(B) Electrostatic precipitator — this matches (III) Particulate matter. Its electrodes give the dust particles a charge and collect them on plates, removing over 99 per cent of particulate matter from the exhaust of a power plant.
(C) Earmuffs — this matches (II) High noise level. Earmuffs protect the ears from loud noise, such as near jet planes or in factories.
(D) Landfills — this matches (I) Solid wastes. In a sanitary landfill, solid wastes are dumped in a dug-out area and covered with soil every day.