Question

What is the full form of CNG?
A. Complete Natural Gas
B. Compressed Natural Gas
C. Compressed Natural Gas
D. None of these

Answer 1

Hint: The CNG is primarily made up of methane, CH4. It is quite eco-friendly and economical than the other conventional liquid auto fuels.

Complete Answer: The full form of CNG is Compressed Natural Gas. It is a fossil fuel substitute for auto fuels like diesel, petrol, Auto LPG etc. It is made by compressing natural gas, which is primarily made up of methane, CH4.
Economically, CNG delivers high performance at minimal cost, as it provides better mileage to a vehicle. It gives the engine an extended life because it does not contaminate or dilute crankcase oil. It is eco-friendly because it reduces harmful vehicular exhaust gas emission like carbon monoxide, carbon dioxide and other suspended particles. It also helps in reducing the effects of global warming and thus protect the environment. It further helps in improving public health as it is non-corrosive, non-toxic and non-carcinogenic.
With regards to safety, CNG has a narrow inflammability range, hence making it safe from other conventional fuels. It is also lighter than air and hence disperses quickly without any harmful accumulation. CNG is sometimes mixed with hydrogen (H) to increase its flame speed, forming the HCNG.
Thus, the correct answer is option (C).

Note: Do not confuse yourself with LPG and CNG. LPG’s primary component is propane and butane while CNG’s is methane. The full form of LPG is Liquefied petroleum gas which is used as a fuel in cooking equipment, vehicle and heating appliances.