Question

Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?
(1) C + 2H2SO4 → CO2 + 2SO2 + 2H2O
(2) CaF2 + H2SO4 → CaSO4 + 2HF
(3) Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O
(4) 3S + 2H2SO4 → 3SO2 + 2H2O
pleae give full solution of this

Answer 1

I think 3 Rd because cu cannot displace h
please tell me if I am right