Question

An aldehyde isomeric with allyl alcohol gives phenyl hydrazone. Pick out a ketone that too gives a phenyl hydrazone containing the same percentage of nitrogen.

Options

• Methyl ethyl ketone

• Dimethyl ketone

• 2-Butanone

• 2-Methyl propanone

Answer 1

Dimethyl ketone

Explanation:

\[\ce{\underset{Allyl alcohol}{CH2 = CH - CH2 - OH} -> \underset{\underset{(Propanol)}{↓\phantom{......}}}{CH3}CH2 - CHO}\]

Propanole is an isomer of Allyl alcohol.

Both hydrazones contained the same percentage of Nitrogen.