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When KBr is treated with conc H2SO4 redd...

When KBr is treated with conc `H_2SO_4` reddish brown gas is evolved. The gas is:

A

`Br_2`

B

`Br_2` + HBr

C

`NO_2`

D

H_2O_2`

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The correct Answer is:
A
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