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Question:

In electroplating industry, zinc replaces copper from?

A. Zinc SulphateB. Copper sulphateC. Sulphuric AcidD. Copper Oxide

Answer:

B. Copper sulphate Zinc rods are called sacrificial anodes because they lose electrons readily and go into ionic form of zinc called Zn+2 ions. So when copper is plated out as copper metal from the copper sulphate solution, the copper is replaced by zinc ions until the solution is depleted

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