Question

Which of the following represents a homologous series?

• A. Ethane, Ethylene, Ethyne
• B. 2- Hexene, 3-Hexene, 4-Hexene
• C. Ethane, Propane, Butane.
• D. Methane, Methanol, Methanal.

Answer 1

The correct option is C

Ethane, Propane, Butane.

A series of compounds with same functional group that differs by a $-C{H}_2$ unit is called as homologous series. For example-
Alkanes: $C{H}_4,C_2{H}_6,C_3{H}_8,\dots \dots \dots$
Hence option D is correct.