Acetylene gives

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(A) Acetylene $(CH \equiv CH)$ is a terminal alkyne with acidic hydrogen atoms.When treated with ammoniacal silver nitrate $(AgNO_3)$,it forms silver

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White precipitate with $AgNO_3$ and red precipitate with $Cu_2Cl_2$

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(A) Acetylene $(CH \equiv CH)$ is a terminal alkyne with acidic hydrogen atoms.When treated with ammoniacal silver nitrate $(AgNO_3)$,it forms silver acetylide,which is a white precipitate: $CH \equiv CH + 2[Ag(NH_3)_2]^+ + 2OH^- 	o Ag-C \equiv C-Ag \downarrow + 4NH_3 + 2H_2O$.When treated with ammoniacal cuprous chloride $(Cu_2Cl_2)$,it forms copper$(I)$ acetylide,which is a red precipitate: $CH \equiv CH + 2[Cu(NH_3)_2]^+ + 2OH^- 	o Cu-C \equiv C-Cu \downarrow + 4NH_3 + 2H_2O$.

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