Given below are two statements : one is labelled as Asserti…

Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 3 PCB Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Given below are two statements : one is labelled as

Assertion and the other is labelled as Reason R:

Assertion A : Acetal/ketal is stable in basic medium.

Reason : The high leaving tendency of alkoxide ion gives the stability to acetal/ketal in basic medium.

In the light of the above statements, choose the correct answer from the options given below:

is true but

is false

A is false but

is true

Both A and R are true and R is the correct explanation of A

Both

and

are true but R is NOT the correct explanation of

Text Solution

Verified by Experts

The correct answer is:

Assertion : Acetals and ketals are cyclic ethers hence they are stable in basic medium but protonated and opened up in acidic medium. Reason: Alkoxide ion is not considered as a good leaving group.

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