| Column I (Fuel Gas) | Column II (Major constituent) | ||
| A. | CNG | 1. | Carbon monoxide, hydrogen |
| B. | Coal gas | 2. | Butane, propene |
| C. | LPG | 3. | Methane, ethane |
| D. | Water gas | 4. | Hydrogen, methane, carbon monoxide |
A) A-2, B-1, C-3, D-4
B) A-2, B-4, C-3, D-1
C) A-3, B-4, C-2, D-1
D) A-3, B-1, C-2, D-4
Correct Answer: C
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