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Two electrolytic cells, one containing a...

Two electrolytic cells, one containing acidified ferrous chloride and another acidified ferric chloride are connected in series. The ratio of iron deposited at cathodes in the two cells when electricity is passed through the cell will be:

A

`3:1`

B

`2:1`

C

`1:1`

D

`3:2`

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The correct Answer is:
D
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