Question

Which C5H12 isomer will have the highest boiling point?

Answer 1

All of these are alkanes.

So, the intermolecular forces between them is dispersion force.

Greater branching in molecules implies less area of contact between molecules and hence lesser dispersion forces.

So, the molecule with no branching will have highest dispersion force and hence highest boiling point.

Option 4 has least branching

Answer: option 4