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If three faradays of electricity are pas...

If three faradays of electricity are passed through the solutions of `AgNO_3, CuSO_4` and `AuCl_3`, the molar ratio of the cations deposited at the cathodes will be

A

`1:1:1`

B

`1:2:3`

C

`3:2:1`

D

`6:3:2`

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The correct Answer is:
D
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