Consider the following substances: I. Ethanol II. Nitroglycerine III. Urea Coal gasification technology can be used in the production of how many of them?
AOnly one
BOnly two
CAll the three
DNone
Answer & Solution
Correct answer: B. Only two
UPSC CSE Prelims 2025 (GS-I, Set A), Q.45. Official answer key: B.
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