Question

Hydrocarbons contain only _____. carbon and hydrogen carbon, hydrogen, and oxygen carbon and nitrogen carbon and helium

Answer 1

Hydrocarbons contain only Carbon and hydrogen.

Hope this helps!

Answer 2

Answer: The correct answer is hydrogen and carbon.

Explanation:

Hydrocarbons are defined as the compounds in which covalent bond is present between hydrogen and carbon atom. They are also called as organic compounds.

If any other atom other than hydrogen and carbon is present, it is not considered as hydrocarbon.

For Example: $C_2H_6$ is an organic compound but $CO_2$ is not an organic compound.

Hence, the correct answer is hydrogen and carbon.