Question

1. which is not a major component of natural gas? propane hydrogen sulfide methane carbon monoxide

Explanation:

Natural gas primarily consists of methane (the main component), along with small amounts of other hydrocarbons like propane, and trace gases such as hydrogen sulfide. Carbon monoxide is not a major component of natural gas; it is a toxic byproduct of incomplete combustion of fuels, not a natural constituent of unprocessed or typical natural gas.

Answer:

carbon monoxide