1.

In the reaction :NaCl+ K_(2)Cr_(2)O_(7) +cons. H_(2)SO_(4) overset("heat")(rarr)X+ Na_(2)SO_(4) +K_(2)SO_(4)+ H_(2)O , X is a reddish brown gas which gives a yellow solution on passing through water and a yellow precipitate on treating the solution with lead acetatesolution . X could be

Answer»

`Cl_(2)`
`CrO_(3)`
`H_(2)CrO_(4)`
`CrO_(2)Cl_(2)`

ANSWER :d


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