Compressed natural gas (CNG), which is filled in cylinders under high pressure, is:
A
LPG
B
Natural gas
C
Mixture of propane and butane
D
Water gas
Correct Option:
B
Explanation
CNG means Compressed Natural Gas. It consists mainly of methane compressed to high pressure for storage in cylinders. LPG is different: it consists mainly of propane and butane and is stored principally as a liquefied gas.
