1.

Aldol condensation between which of the following two compounds followed by dehydration gives methyl vinyl ketone?

Answer»

Formaldehyde and acetone
Formaldehyde and acetaldehyde
Two molecules of acetaldehyde
Two molecules of acetone

Solution :`UNDERSET("Formaldehyde")(CH_(2)=O)+underset("Acetone")(CH_(3)COCH_(3)) underset(("Cross aldol condensation"))OVERSET(OH^(-))to HOCH_(2)-CH_(2)-COCH_(3) underset(-H_(2)O)overset(H^(+)//H_(2)O,Delta)to underset("Methyl VINYL ketone")(CH_(2)=CH-CO-CH_(3))`.


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