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Q.

Zinc dust in alcoholic solution is a specific reagent in the preparation of alkenes as a

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a

Dehalogenating agent

b

Dehydrohalogenating agent

c

Dehydrogenating agent

answer is D.

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Detailed Solution

When ethylene bromide is heated with zinc dust in alcohol solution, ethylene is formed.

${CH}_{2} Br - {CH}_{2} Br + Zn \overset{Alcohol}{\to} {CH}_{2} = {CH}_{2} {ZnBr}_{2}$

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