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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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