Question

Match List-I with List-II and select the correct answer using codes given below the lists:

List-I (Fuel gases)		List-II (Major constituents)
A	CNG	i	Carbon monoxide, Hydrogen
B	LPG	ii	Butane, Propane
C	Coal gas	iii	Methane, Ethane
D	Water-gas	iv	Hydrogen, Methane, Carbon monoxide

1. A-ii, B-i, C-iii, D-iv
2. A-ii, B-iv, C-iii, D-i
3. A-iii, B-ii, C-iv, D-i
4. A-iii, B-ii, C-i, D-iv

Answer 1

Correct Answer - Option 3 : A-iii, B-ii, C-iv, D-i

The correct answer is A-iii, B-ii, C-iv, D-i.

List-I (Fuel gases)	List-II (Major constituents)
CNG	Methane, Ethane
LPG	Butane, Propane
Coal gas	Hydrogen, Methane, Carbon monoxide
Water-gas	Carbon monoxide, Hydrogen

• CNG:
  • ​Compressed natural gas (CNG) is made by compressing natural gas
  • Natural gas is composed of methane (CH4).
  • It also contains a small amount of ethane.
• LPG:
  • LPG is the abbreviation of Liquefied Petroleum gas.
  • The major constituents of LPG are propane and butane. 
• Coal gas:
  • ​Coal gas contains hydrogen, methane, and carbon monoxide. 
• Water-gas:
  • ​Water gas is a synthesis gas.
  • It contains carbon monoxide and hydrogen.
  • In its nature is flammable. 
  • It may cause carbon monoxide poisoning.