Q.

Which one of the following compounds shows the presence of intramolecular hydrogen bond         [2016]

1 H2O2  
2 HCN
 
3 Cellulose
 
4 Concentrated acetic acid   

Ans.

(3)

H2O2,HCN and conc. CH3COOH form intermolecular hydrogen bonding while cellulose has intramolecular hydrogen bonding.