Propiophenone on reaction with hydrazine in presence of potassium hydroxide with ethylene glycol gives:

Reduction reaction

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Oxidation reaction

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Substitution reaction

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(a) and (c) above.

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Solution

The correct option is A Reduction reaction
The carbonyl group of aldehydes and ketones is reduced to $C H_{2}$ group (hydrocarbons) on treatment with hydrazine followed by heating with sodium or potassium hydroxide in high boiling solvent such as ethylene glycol is known as Wolff-Kishner reduction. the reaction is as follow:

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