Alcoholic solution of $K O H$ is a specific reagent for:

dehydration

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dehydrogenation

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dehydro halogenation

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dehalogenation

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Solution

The correct option is C dehydro halogenation
Alcoholic solution of $K O H$ is a specific reagent for Dehydro halogenation. The product is an alkene
Aqueous KOH solution is used for replacement of halogen atom with -OH group. The product is an alcohol.
$C H_{3} C H_{2} B r a l c o h o l i c K O H - -------- \to C H_{2} = C H_{2} + H B r$
$C H_{3} C H_{2} B r + a q K O H \to C H_{3} - C H_{2} - O H + K B r$

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