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Cross aldol condensation: alpha-hydrogen and number of products

This type of question, asked 2 times: 4 Apr 2024, 24 Jan 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    4 Apr 2024

    42
    Given below are two statements: Statement I: Acidity of α\alpha-hydrogens of aldehydes and ketones is responsible for Aldol reaction. Statement II: Reaction between benzaldehyde and ethanal will NOT give Cross - Aldol product. In the light of above statements, choose the most appropriate answer from the options given below.

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  2. Question 2

    24 Jan 2026 S2

    39
    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 :

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