Question

Alkenes are the homologous series of saturated hydrocarbons. Alkenes mainly undergo substitution reactions.
1. True
2. False

Answer 1

Substitution reactions cannot occur if there is unsaturation, that is if there is double or triple bond.

Complete Step By Step Solution:
Alkenes are the homologous series of unsaturated hydrocarbons. Alkenes differ from alkanes because of the presence of double bonds in it and that alkenes are unsaturated. Alkanes cannot undergo addition reactions due to absence of double and triple bond that is absence of unsaturation but alkenes undergo such reactions.

But it is written in the statement that alkenes are homologous series of saturated hydrocarbons which is not true as alkenes are unsaturated.

**So this statement is False.

Note:**
It is to be noted that alkanes are saturated and alkenes and alkynes are unsaturated and they differ in reaction because of the presence of double or triple bonds.