Question

Which of the following is/are true? Hydrocarbons contain carbon, hydrogen and oxygen. Alkenes and Alkynes are unsaturated hydrocarbons. An alkane with 5 carbons has a molecular formula of C5H10. Hydrocarbons only contain C-C single bonds. More than one of above is true.

Answer 1

Answer: Alkenes and Alkynes are unsaturated hydrocarbons.

Step-by-step explanation:

Hydrocarbons are compounds containing carbon and hydrogen.

Saturated hydrocarbons are defined as the hydrocarbons in which a single bond is present between carbon and carbon atoms.These are called as alkanes. The general formula for these hydrocarbons is
`C_nH_(2n+2)`. Thus alkane with 5 carbon atoms will have formula of
`C_5H_(12)`

Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is
`CnH_2n`
`C_nH_(2n)` and
`C_nH_(2n-2)` respectively.