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Zinc-copper couple that can be used as a...

Zinc-copper couple that can be used as a reducing agent is obtained by

A

welding `Zn` and `Cu` wires together

B

coating copper with `Zn`

C

coating `Zn` with `Cu`

D

mixing `Zn` dust and copper gauge

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The correct Answer is:
C
In zinc-copper couple, the main component which acts as the reducing agent is `Zn`.
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