1.

Which of the following is nota redox reaction? (A) 2Mg + O2 → 2MgO (B) CaCO3 + 2HCl → CaCl2 + CO2 + H2O (C) 2CuCl2 → Cu2Cl2 + Cl2 (D) SO2 + I2 + 2H2O → H2SO4 + 2HI

Answer»

(B) CaCO3 + 2HCl → CaCl2 + CO2 + H2



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