UPSC CSE Prelims
Question 14
Consider the following substances :
- Ethanol
- Nitroglycerin
- Urea
Coal gasification technology can be used in the production of how many of them?
View correct answer and explanation
Correct answer: B
Correct Option: B (Only two)
Explanation: Coal gasification creates synthesis gas, mainly hydrogen and carbon monoxide, which can be converted into chemicals used to produce ethanol and urea. Nitroglycerin is made through nitration of glycerol, not directly via the standard coal-gasification route.
Statement / Pair / Item-wise Analysis:
I: Ethanol-possible via synthesis-gas conversion.
II: Nitroglycerin-not a typical coal-gasification product; it requires glycerol nitration.
III: Urea-possible via gasification-derived ammonia and CO₂.
Option-wise Analysis:
A. Incorrect-'Only one' understates the verified count of 2.
B. Correct-this matches the facts and the item-wise assessment above.
C. Incorrect-'All the three' overstates the verified count of 2.
D. Incorrect-'None' understates the verified count of 2.