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Question

2-butene and butyne can be distinguished by their reaction with:

A
Ammonical solution of Cu2Cl2
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B
Ammonical solution of AgNO3
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C
Alkaline solution of KMnO4
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D
None of these
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Solution

The correct option is A Ammonical solution of Cu2Cl2
Copper Acetylide is obtained as a red precipitate when a terminal alkyne is passed through an ammoniacal solution of cuprous chloride.
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