Which of the following are some important pollutants released by steel industry in India? 1. Oxides of sulphur 2. Oxides of nitrogen 3. Carbon monoxide 4. Carbon dioxide Select the correct answer using the code given below.
A1, 3 and 4 only
B2 and 3 only
C1 and 4 only
D1, 2, 3 and 4
Answer & Solution
Correct answer: D. 1, 2, 3 and 4
UPSC CSE Prelims 2014 (GS-I, Set A), Q.24. Official answer key: D.
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