JEE · NEET Previous Year Question
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A : Acetal/Ketal is stable in basic medium.
Reason R : The high leaving tendency of alkoxide ion gives the stability to acetal/ketal in basic medium.
choose the correct answer from the options given below:
Topic: JEE PYQ
Answer: A. Full step-by-step solution below.
- AA is true but R is false
- BA is false but R is true
- CBoth A and R are true and R is the correct explanation of A
- DBoth A and R are true but R is NOT the correct explanation of A
Correct answer: A
Solution
(a) For Assertion: Acetal and ketals are basically ethers hence they must be stable in basic medium but should break down in acidic medium. Hence assertion is correct. For reason: Alkoxide ion () is not considered a good leaving group hence reason must be false.More Carboxylic Acids & Derivatives PYQs
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