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NEET2016Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

Options

  1. ACu + 2 H 2 SO 4 → CuSO 4 + SO 2 + 2 H 2 O
  2. B3 S + 2 H 2 SO 4 → 3 SO 2 + 2 H 2 O
  3. CC + 2 H 2 SO 4 → CO 2 + 2 SO 2 + 2 H 2 O
  4. DCaF 2 + H 2 SO 4 → CaSO 4 + 2 HF

Correct answer

D. CaF 2 + H 2 SO 4 → CaSO 4 + 2 HF

Step-by-step solution

CaF 2 + H 2 SO 4 → CaSO 4 + 2 HF In this reaction, there is no change in oxidation state of any atom.

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