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A gas when passed through the K(2)Cr(2)O...

A gas when passed through the `K_(2)Cr_(2)O_(7)` and dil. `H_(2)SO_(4)` solution, turns it green, the gas is

A

`H_(2)S`

B

`NH_(3)`

C

`Cl_(2)`

D

`SO_(2)`

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The correct Answer is:
B, D
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