Question

Which one of the following has the minimum boiling point?

• A. n-butane
• B. isobutane
• C. 1- butene
• D. 1- butyne

Answer 1

Answer: (B)

The boiling point is in the following order
Alkyne > Alkene > n-Alkane> Branched alkane
1-butyne $>$ 1-butene $>n$-butane $>$ isobutane