Acetylene can form a precipitate of __________ when it is passed through ammonical cuprous chloride.

copper sulphate

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copper acetylide

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copper nitrate

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polypropylene

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Solution

The correct option is D copper acetylide
When acetylene is passed through an ammonical solution of cuprous chloride, at room temperature, precipitates of cuprous acetylide (red) is formed.
$H C \equiv C H + C u_{2} C l_{2} + N H_{4} O H \to C u C \equiv C C u c u p r o u s a c e t y l i d e$

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