Consider the reaction given below, the maximum possible deuterium atoms found in the product of the reaction

Answer

8

Explanation

For enolization, acidic or basic conditions are used. Since `alpha`-hydrogens of carbonyl group are acidic in nature and the reaction medium is basic in the given problem, so all hydrogen atoms alpha to carbonyl group will be substituted by deuterium atom.
In addition, in this reaction, the hydrogen atoms at alpha position to the double bond are also substituted because the double bond is in conjugation with the carbonyl group.
. So, a total of eight hydrogen atoms can be substituted.