| Column I | Column II | ||
| A. | Catalytic converter | 1. | Removes gases like \[S{{O}_{2}}\] |
| B. | Electrostatic precipitator | 2. | Removes particulate matter |
| C. | Scrubber | 3. | Reduces automobile emission |
A) A-1, B-4, C-3, D-2
B) A-2, B-4, C-3, D-1
C) A-4, B-1, C-3, D-2
D) A-2, B-3, C-1, D-4
Correct Answer: B
Solution :
Catalytic convertor has expensive metals namely platinum, palladium, rhodium and convert \[N{{O}_{x}}\] to nitrogen and CO to\[C{{O}_{2}}\]. In this way, it reduces automobile emission. Electrostatic precipitators are used in thermal power plants to remove particulate matter up to \[99\,%\] by electrically changing the particles. A scrubber can remove gases like\[S{{O}_{2}}\]. In a scrubber, the exhaust is passed through a spray of water of lime.
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