which of the following is a redox reaction -
a) CaCO3 - CaO + CO2
b) H2 + Cl2 - 2HCl
c) CaO + 2HCl - CaCl2 + H2O
d) NaOH + HCl - NaCl + H2O
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The option ( c ) is the answer which I think.
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