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🧪 Chemistry  ·  Redox Reactions  ·  NEET & JEE

In the reaction Zn + CuSO<sub>4</sub> → ZnSO<sub>4</sub> + Cu, zinc is:

Answer: Oxidised.

  • A Reduced
  • B Neither oxidised nor reduced
  • C Oxidised
  • D Acting as an oxidising agent

Correct answer: C. Oxidised

Explanation: Zinc changes from oxidation state 0 to +2 in ZnSO₄; it loses electrons and is oxidised. Zinc is the reducing agent.

Electron Transfer: Zn + Cu²⁺ → Zn²⁺ + CuZnloses 2e⁻OXIDISED (Zn → Zn²⁺)2e⁻Cu²⁺gains 2e⁻REDUCED (Cu²⁺ → Cu)Zn = reducing agentCu²⁺ = oxidising agent

Electron transfer in a redox reaction: zinc loses electrons (oxidised, acts as reducing agent) and copper(II) ions gain those same electrons (reduced, acts as oxidising agent).

Concept context

Master electron transfer in chemistry: assign oxidation states, balance half-reactions, identify oxidising and reducing agents, and connect redox to everyday reactions.

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