Question

(I) $1,2$-dihydroxy benzene
(II) $1,3$-dihydroxy benzene
(III) $1,4$-dihydroxy benzene
(IV) Hydroxy benzene
The increasing order of boiling points of above mentioned alcohols is

• A. I < II < III < IV
• B. I < II < IV < III
• C. IV < I < II < III
• D. IV < II < I < III

Answer 1

Answer: (C)

All dihydroxy benzene will have, higher boiling points than monohydroxy benzene. Also, among dihydroxy benzenes, $1,2$,-di-hydroxy benzene has lowest boiling point due to intramolecular $H$-bonding.