Question

Give example of chain position and functional isomerism

Answer 1

Chain isomerism: Pentane isomers (n‑pentane, isopentane, neopentane)

Positional isomerism: 1‑Chloropropane and 2‑chloropropane

Functional isomerism: Ethanol and dimethyl ether

Answer 2

Solution Explanation:

1. Chain Isomerism:

   • Example: Pentane isomers:

     • n‑Pentane (straight chain)
     • Isopentane (2‑methylbutane) (one branch)
     • Neopentane (2,2‑dimethylpropane) (two branches)

2. Positional Isomerism:

   • Example: Chloropropane isomers:

     • 1‑Chloropropane (Cl on the first carbon)
     • 2‑Chloropropane (Cl on the second carbon)

3. Functional Isomerism:

   • Example: Compounds with formula C₂H₆O:

     • Ethanol (alcohol group)
     • Dimethyl ether (ether group)