Question

Assertion: Two members of a homologous series have similar chemical properties.
Reason: Propane and butane are members of same homologous series. ​

Answer 1

A is true and the R is false

Answer 2

Both assertion and reason are true about homologous series.

• Homologous series refers to the compounds which have the same functional group. The presence of the same functional group results in similar chemical properties.
• Propane and butane, are alkanes. They have a common -CH2 group with them.
• Thus they belong to the same homologous series.
• The difference between propane and butane is the number of carbon atoms. Propane has three carbon atoms and butane has four carbon atoms in its structure.