Concept:A hydrocarbon is an organic compound composed solely of carbon and hydrogen.
Explanation:The name "hydrocarbon" comes from its two elements: hydrogen and carbon.
It contains only carbon (
C) and hydrogen (
H) atoms.
No other element, such as oxygen or nitrogen, is present in a hydrocarbon.
Common examples include methane (
CH4), ethane (
C2H6), and benzene (
C6H6).
Hydrocarbons are classified into two main groups: aliphatic and aromatic.
Aliphatic hydrocarbons have open-chain structures, while aromatic hydrocarbons contain ring structures.
Major natural sources of hydrocarbons include coal, natural gas, and petroleum.
Therefore, compounds made up of only carbon and hydrogen are known as hydrocarbons.
Answer:The correct option is B. Hydrocarbons.