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B
silver acetate
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C
metal silver
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D
silver mirror
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Solution
The correct option is A silver acetylide Silver acetylide is fomed, when the acetylene reacts with ammoniacal AgNO3. C2H2+2AgNO3+2NH4OH⟶C2Ag2+2NH4NO3+2H2O
It is called Tollen's Test. The silver acetylide forms a white ppt. This
test is used to determine the presence of a triple-bond in
hydrocarbons.