Question

Main component of CNG is:
A.Butane
B.Methane
C.Hydrogen
D.Coal gas

Answer 1

Hint: CNG or Compressed natural Gas is a commonly used gas generally used in automobiles as a fuel. It is an eco- friendly fuel and does not harm the environment. The main component of such a gas must have high content of hydrogen as it has a high calorific value and is a clean fuel. Thus, the main component must be a lower hydrocarbon.

Complete step by step answer:
Compressed natural gas is a transparent, clear, non- corrosive and odorless gas which is now commonly used as a cleaner, cheaper and a more efficient alternative to many other conventionally used fuels. As the name suggests, it is manufactured by the compression of natural gas. The gas is compressed under high pressure to less than one percent of its volume at the standard temperature and pressure conditions (when the pressure is 1 atm and temperature is 273 Kelvin).
Natural gas mainly consists of methane gas and thus, it is the main component of CNG.

Thus, the correct answer is B.

Note:
CNG is has many advantages over the conventionally used fuels:
-It produces very less amount of greenhouse gases as compared to the traditional fuels like petrol, diesel, etc., i.e., it burns cleaner.
-The carbon emission is produced in very less amounts
-The gas is non- toxic and does not contaminate groundwater
-Automobiles and engines that run on CNG create very less noise as compared to those using diesel and gasoline, thus also reducing noise pollution.
-It is cheap and very cost effective.
-It is less prone to fire hazards as compared to other fuels.