Q. When zinc is placed in copper sulfate solution, which reaction occurs?

जब जिंक को कॉपर सल्फेट के घोल में रखा जाता है तो कौन सी प्रतिक्रिया होती है?

Zn + Cu²⁺ → Zn²⁺ + Cu

Zn²⁺ + Cu → Zn + Cu²⁺

Zn + Cu → Zn²⁺ + Cu²⁺

No reaction occurs
कोई प्रतिक्रिया नहीं होती

Zinc is more reactive than copper and displaces Cu²⁺ from solution:

\text{Zn (s)} + \text{Cu}^{2+} (aq) → \text{Zn}^{2+} (aq) + \text{Cu (s)}

This is a redox reaction, and zinc undergoes oxidation.

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