Ncert Exercises & Solutions

Select the correct option based on statements below:

Assertion (A):	The α -hydrogen atom in carbonyl compounds is less acidic.
Reason (R):	The anion formed after the loss of the α -hydrogen atom is resonance stabilized.

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	(A) is false but (R) is true.

Hint:

α

-hydrogen atom in carbonyl compounds is acidic in nature.

The

α

-hydrogen atom in carbonyl compounds is acidic in nature due to the presence of the electron-withdrawing carbonyl

group. The anion formed after loss of

α

-hydrogen atom is resonance stabilized. The structure is as follows:

Hence, option 4th is the correct answer.