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Acidified potassium dichromate is treate...

Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium_____________.

A

increases from `+3 "to" +6`

B

decreases from `+6 "to"+3`

C

remanins unchanged

D

decreases from `+6"to"+2`

Text Solution

Verified by Experts

The correct Answer is:
B
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