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Question

CaC2H2O−−→ACu2Cl2−−−−−→NH4OHB. Incorrect statement is


A

Pure form of 'A' has garlic smell

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B

'B' is used as a test to identify 'A'

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C

'B' is red precipitate

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D

'B' is a pale yellow gas

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Solution

The correct option is C

'B' is red precipitate


Garlic smell is due to impurities in acetylene like PH3+H2S
B is a reddish brown precipitate of Cu2C2.


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