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

  • A
    $Cu + 2H_2SO_4 \rightarrow CuSO_4 + SO_2 + 2H_2O$
  • B
    $S + 2H_2SO_4 \rightarrow 3SO_2 + 2H_2O$
  • C
    $C + 2H_2SO_4 \rightarrow CO_2 + 2SO_2 + 2H_2O$
  • D
    $CaF_2 + H_2SO_4 \rightarrow CaSO_4 + 2HF$

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