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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
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1998
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Q)
A gas decolourises $Br_2$ in $CCl_4$ and forms a precipitate with ammonical silver nitrate. The gas is :
( A ) $C_2H_2$
( B ) $C_2H_6$
( C ) $C_2H_4$
( D ) $CH_4$
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