Question

Arrange the following in the increasing order of expected enol content. 

i. CH₃ COCH₂ CHO 

ii. CH₃ COCH₃

iii. CH₃ CHO 

iv. CH₃ COCH₂ COCH₃

(A) iii<i<ii<iv 

(B) iii<ii<i<iv

(C) i<iv<ii<iii 

(D) iv<i<ii<iii

Answer 1

Correct option (B) iii<ii<i<iv 

Explanation: 

Order of enol content: 

Aldehyde < Ketone < Keto–aldehyde < Diketone. 

(iii < ii < i < iv)