1.

Which of the following can converts acidified Cr_(2)O_(7)^(2(-)) to green product?

Answer»

`SO_(2), H_(2)SO_(3) and H_(2)SO_(4)`
`SO_(3), H_(2)S and H_(2)SO_(3)`
`SO_(3), H_(2)S and Fe^(+3)`
`SO_(3)^(-2), H_(2)S and Fe^(+2)`

SOLUTION :`2CuCl_(2)+SO_(2)+2H_(2)O to 2CuCl (s) +2HCl(g)+H_(2)SO_(4)(d)`


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