3. Which of the following is not a redox reaction?
(1) 2Mg + 02 → 2Mgo
(2) CaCO3 + 2HCl → CaCl2 + CO2 + H2O
(3) 2CuCl2 → Cu,Cl2 + Cl2
(4) SO2 + 12 + 2H2O → H2SO4 + 2H1
please answer with appropriate explanation and definition the best explanation will be given as the brilliantest..
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sorry I didn't get a answers
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the answer of the question is may be 4
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