How many straight chain isomers are possible for the molecular formula ${\mathrm{C}}_5{\mathrm{H}}_8$. Draw their structures.

Group the following into saturated and unsaturated hydrocarbons.

Note: The above given question in the book has error and the modified question is stated below.

Define saturated and unsaturated hydrocarbons by giving examples.

Choose the correct option that fits the description given below.

(Position isomerism, homologous series, alkanes, isomers, chain isomerism, catenation)

This hydrocarbon only has single bonds.

Choose the correct option that fits the description given below.

(Position isomerism, homologous series, alkanes, isomers, chain isomerism, catenation)

Isomerism that can be exhibited by alkenes and alkynes but not alkanes.