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Q111
(CDS-I/2010)
History & Culture › National Movement (1857–1947) › Nationalist leaders
Answer Verified
Match List-I with List-II and select the correct answer using the code given below the Lists:
| List-I (Item) | List-II (Toxic Substance) |
|---|---|
| A. CFL lamp | 1. Nitrogen oxides |
| B. Automobile battery | 2. Phthalates |
| C. Polymer | 3. Lead |
| D. Diesel engine | 4. Mercury |
Result
Your answer:
—
·
Correct:
B
Explanation
The correct matching of items with their associated toxic substances is as follows:
- CFL lamp (A - 4): Compact Fluorescent Lamps contain a small amount of mercury vapor to produce light, which is toxic to the environment.
- Automobile battery (B - 3): Traditional car batteries are lead-acid batteries, which rely on plates of toxic lead and lead dioxide.
- Polymer (C - 2): Phthalates are chemical compounds widely used as plasticizers to increase the flexibility and longevity of polymers (plastics).
- Diesel engine (D - 1): The combustion process in diesel engines results in the emission of nitrogen oxides (NOx), a major group of toxic air pollutants.
Therefore, the correct code is A-4, B-3, C-2, D-1.
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