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When a copper rod is dipped into a solution of zinc sulphate, what happens?
AZinc oxide is formed
BCopper sulphate is formed
CNo reaction occurs
DWater is formed
Answer & Solution
Correct answer: C. No reaction occurs
1. A metal can displace another only if it is more reactive.
2. Copper is less reactive than zinc, so it cannot displace zinc from zinc sulphate.
3. Hence no reaction occurs.
_Source: RRB Group D CEN-02/2018 PYQ, Q.75._