Which of the following compounds will no

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Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Aldehydes, Ketones and Carboxylic Acids

Question:

Which of the following compounds will not undergo aldol condensation?

Options:

Formaldehyde

Ehylmethyl ketone

Acetaldehyde

Propanal

Correct Answer:

Formaldehyde

Explanation:

The correct answer is Option (1) → Formaldehyde

Aldol condensation requires the presence of at least one α-hydrogen atom.

Formaldehyde (HCHO) → No α-hydrogen → does not undergo aldol condensation
Ethyl methyl ketone (butan-2-one) → Has α-hydrogens
Acetaldehyde (ethanal) → Has α-hydrogens
Propanal → Has α-hydrogens

Hence, Formaldehyde (HCHO) is the answer