A) \[HCHO\]
B) \[C{{H}_{3}}CHO\]
C) \[C{{H}_{3}}COC{{H}_{3}}\]
D) \[C{{H}_{3}}C{{H}_{2}}CHO\]
Correct Answer: A
Solution :
[a] HCHO Formaldehyde, benzaldehyde and benzophenone do not undergo aldol condensation since they do not contain a - hydrogen atoms. In aldol condensation. Two molecuels of an aldehyde or ketone condense in presence of dilute alkali (dil. \[NaOH\],\[N{{a}_{2}}{{O}_{3}}\],\[Ba\,{{(OH)}_{2}}\] etc.) to form \[\beta \]-Hydroxyaldehyde or ketones. Ex.
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