Question

Coal gas contains:

• A. hydrogen
• B. carbon monooxide
• C. methane
• D. all of the above

Answer 1

Answer: (D)

all of the above

Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. Coal gas is a more general term referring to manufactured gaseous fuels produced for sale to consumers and municipalities.
Coal gas contains a variety of calorific gases including hydrogen, carbon monoxide, methane, and volatile hydrocarbons together with small quantities of non-calorific gases such as carbon dioxide and nitrogen.