Question

The intramolecular hydrogen bonding is present in
a) o-nitrophenol
b) m-nitro phenol
c) p-nitrophenol
d) None

Answer 1

Option (a) is correct :- The Intramolecular hydrogen bonding is present in Ortho-NitroPhenol .


Reason/Explanation :- Refer to the attachment .
(i) Ortho nirtophenol is more steam volatile then para & meta -nitrophenol because O-nitrophenol forms intramolecular Hydrogen bond whereas Para and meta nitrophenol forms intermolecular hydrogen bond.

Note :- [Intermolecular hydrogen bond increase the melting & boiling point , since o-nitrophenol forms intramolecular hydrogen bond so it has low melting and boiling point] .



Hope it Helps. :-) 

Answer 2

Explanation:

O- nitrophenol having intramolecular hydrogen bonding