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Assertion (A): The following intramolecu...

Assertion (A): The following intramolecular aldol reaction occurs.

Reason (R ): The carbanion does not add to C-4 because a strained four-membered ring would result.

A

Both (A) and (R ) true and (R ) is the correct explanation of (A).

B

Both (A) and (R ) are true but (R ) is not correct explanation of (A).

C

(A) is true but (R ) is false.

D

(A) is false but (R ) is true.

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • Assertion (A): The following intramolecular aldol reaction occurs. Reason (R ): (CHO) is a better acceptor than (C==O) .

    A
    Both (A) and (R ) true and (R ) is the correct explanation of (A).
    B
    Both (A) and (R ) are true but (R ) is not correct explanation of (A).
    C
    (A) is true but (R ) is false.
    D
    (A) is false but (R ) is true.

  • Assertion (A): The following reaction occurs. Reason (R ): The semicarbazone of (A) (pentan-2-one) exists in two geometrical isomers.

    A
    If both (A) and (R ) true and (R ) is the correct explanation of (A).
    B
    If both (A) and (R ) are true but (R ) is not correct explanation of (A).
    C
    If (A) is true but (R ) is false.
    D
    If (A) is false but (R ) is true.

  • Assertion (A): The following cross Cannizzaro reaction occurs. Reason (R ): Rate of reaction is: Rate = K["Aldehyde(I)"]["Aldehyde(II)"][overset(Θ)(OH)] and bimolecular.

    A
    If both (A) and (R ) true and (R ) is the correct explanation of (A).
    B
    If both (A) and (R ) are true but (R ) is not correct explanation of (A).
    C
    If (A) is true but (R ) is false.
    D
    If (A) is false but (R ) is true.