by Q. Consider the following substances:
UPSC Civil Services Examination (Prelims) 2025 – General Studies Paper I
I. Ethanol
II. Nitroglycerine
III. Urea
Coal gasification technology can be used in the production of how many of them?
(a) Only one
(b) Only two
(c) All the three
(d) None
Answer: (c) All the three
Explanation:
- Ethanol: Can be derived via syngas (synthesis gas) from coal gasification
- Urea: Produced using ammonia, which is derived from coal gasification
- Nitroglycerine: While not directly made from coal gasification, nitric acid and glycerol can be sourced indirectly via chemical routes involving syngas.
Answer: (c) All the three
