Question

Tautomerism is exhibited by

(a) R₃CNO₂ 

(b) RCH₂NO₂

(c) (CH₃)₃CNO 

(d) (CH₃)₂NH

Answer 1

The correct option is: (b) RCH₂NO₂

Explanation:

It is a special type of functional isomerism, in which both the isomers are represented by one and the same substance and are always present in equilibrium. It is exhibited by nitroalkane (RCH₂NO₂) and isonitroalkane.