Consider the following: 1. Carbon monoxide 2. Methane 3. Ozone 4. Sulphur dioxide Which of the above are released into atmosphere due to the burning of crop/biomass residue?
A1 and 2 only
B2, 3 and 4 only
C1 and 4 only
D1, 2, 3 and 4
Answer & Solution
Correct answer: D. 1, 2, 3 and 4
UPSC CSE Prelims 2019 (GS-I, Set A), Q.35. Official answer key: D.
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