Question

The main constituent of natural gas is:

• A. Methane
• B. Ethane
• C. Propane
• D. Butane

Answer 1

The correct option is A

Methane

Explanation for correct option:

(A) Methane

• Natural gas is also called natural methane gas.
• Natural gas is formed from plants, animals, and from microorganisms
• It is a colorless highly flammable hydrocarbon.
• Natural gas primarily consists of methane $94.7\%$ and ethane $4.2\%$and also it contains other hydrocarbons such as propane $0.2\%$, butane, pentane, and hexane.

Explanation for incorrect options:

(B) Ethane

• Natural gas contains ethane but it is present in a smaller amount.

(C) Propane

• Natural gas contains propane but it is present in a smaller amount.

(D) Butane

• Natural gas contains butane but it is present in a lesser amount.

Hence, natural gas is primarily composed of methane (A). So, this is the correct option.