Question

	List I		List II
A	Coal gas	1	Highest calorific value
B	Water gas	2	The percentage of $CO$ and $H_2$ are almost equal
C	Carburetted water gas	3	Hydrocarbon con tent is more
D	Semi water gas	4	Lowest calorifiic value among the given
		5	Used in the open hearth process of manufacture of steel.

• A. A-4, B-3, C-2, D-1
• B. A-3, B-2, C-4, D-1
• C. A-4, B-5, C-2, D-3
• D. A-1, B-2, C-3, D-4

Answer 1

The correct option is D A-1, B-2, C-3, D-4

Coal gas $\to$ Has highest calorific value of $4000-7000$ kcal/kg.

Water gas$\to$The percentage of $CO$ and $H_2$ are almost equal.

Carbureted water gas $\to$ Hydrocarbon content is more

Semi water gas $\to$ Lowest calorific value among the given.hence the correct option is D.