Question

What is the actual composition of natural gas?

• A. Methane (65%), ethane (20%), propane (10%) and butane (5%).
• B. Methane, ethane (50%), propane (3%) and small amount of butane.
• C. Methane (10%), ethane (85%), propane (3%)
  and small amount of butane.
• D. Methane (85%), ethane (10%), propane (3%) and small amount of butane.

Answer 1

The correct option is D Methane (85%), ethane (10%), propane (3%) and small amount of butane.

Natural gas is mainly composed of methane. The concentration of various constituents is methane (85%), ethane (10%), propane (3%) and small amount of butane.