Statement I : Cross aldol condensation between two different aldehydes will always produce four different products. Statement II : When semicarbazide reacts with a mixture of benzaldehyde and acetophenone under optimum pH, it forms a condensation product with acetophenone only.

Given below are two statements related to aldol condensation and semicarbazide reaction. Choose the correct option.

Q. Given below are two statements :

Statement I : Cross aldol condensation between two different aldehydes will always produce four different products.

Statement II : When semicarbazide reacts with a mixture of benzaldehyde and acetophenone under optimum pH, it forms a condensation product with acetophenone only.

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

(A) Statement I is true but Statement II is false

(B) Both Statement I and Statement II are false

(D) Statement I is false but Statement II is true

Correct Answer: Both Statement I and Statement II are false

Explanation

Statement I:

Cross aldol condensation between two different aldehydes does not always produce four products. If one aldehyde does not have α-hydrogen (like benzaldehyde), the number of possible aldol products is reduced.

Hence, Statement I is false.

Statement II:

Semicarbazide reacts preferentially with aldehydes rather than ketones because aldehydes are more reactive.

In a mixture of benzaldehyde and acetophenone, semicarbazide forms a condensation product with benzaldehyde, not acetophenone.

Hence, Statement II is false.

Therefore, both Statement I and Statement II are false.

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