COMEDK 2024 Evening Shift | Aldehyde and Ketone Question 10 | Chemistry

What is/are the product/s formed when Benzaldehyde and Ethanal react in presence of dil. $$\mathrm{NaOH}$$ followed by heating the intermediate product formed?

2-Methylpent-2-enal & But-2-enal

3-Phenylprop-2-enal & But-2-enal

Only product is But-2-enal

Only product is 2-Phenylprop-2-enal

COMEDK 2024 Evening Shift

MCQ (Single Correct Answer)

-0

Which one of the following is the correct order of reagents to be used to convent [A] to [X] ?

COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 8 English

$$ \text { Reagents: } \mathrm{PCC}, \mathrm{PCl}_5, \mathrm{LiAlH}_4, \frac{\mathrm{KCN}}{\mathrm{H}_3 \mathrm{O}^{+}} $$

$$ \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{PCl}_5 \quad \mathrm{PCC} \quad \mathrm{LiAlH}_4 $$

$$ \mathrm{PCl}_5, \quad \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{LiAlH}_4 \quad \mathrm{PCC} $$

$$ \mathrm{LiAlH}_4, \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{PCl}_5 \quad \mathrm{PCC} $$

$$ \mathrm{PCC} \quad \mathrm{PCl}_5 \quad \frac{K C N}{\mathrm{H}_3 \mathrm{O}^{+}} \quad \mathrm{LiAlH}_4 $$

COMEDK 2024 Afternoon Shift

MCQ (Single Correct Answer)

-0

Predict the final major product 'S' of the following reaction

COMEDK 2024 Afternoon Shift Chemistry - Aldehyde and Ketone Question 12 English

Cyclohexane-1, 2-dione

Cyclohexene

Cyclohexane-1, 2-diol

Cyclohexanone

COMEDK 2024 Afternoon Shift

MCQ (Single Correct Answer)

-0

Which of the following compounds undergo Aldol condensation followed by dehydration to give 3-phenylprop-2-en-1-al?

Benzaldehyde and Acetophenone

Two molecules of Benzaldehyde

Benzaldehyde and Acetone

Benzaldehyde and Ethanal

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