Question

N-butyl bromide has higher boiling point than t-butyl bromide

Answer 1

boiling point decreased with increase in branched chain . since they butyl is more branched than n butyl.so that's why

Answer 2

Hey !!

n-Butyl bromide being a straight chain alkyl halide has larger surface area than tert. butyl bromide. Larger the surface area, larger the magnitude of the van der Waal's forces and hence higher is the boiling point.

Good luck !!