One gas bleaches the colour of flowers b...

One gas bleaches the colour of flowers by reduction while the other by oxidation. They are

A

CO and `Cl_2`

B

`SO_2 and Cl_2`

C

`H_2S and Br_2`

D

`NH_3 and SO_2`

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The correct Answer is:

B

`SO_2` bleaches by reduction while chlorine bleaches colour of flowers by oxidation

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