Q. Which of the following, has the most acidic hydrogen?

IIT JEEIIT JEE 2000

A

3-hexanone

B

2, 4-hexanedione

C

2, 5-hexanedione

D

2, 3-hexanedione

Solution:

A methylene $(-CH_2-) $ with carbonyl on both side is highly
acidic.

Solition Image