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hard • Past Paper
Which of the following is a redox reaction?
A
NaOH + HCl -> NaCl + H2O
B
AgNO3 + NaCl -> AgCl + NaNO3
C
H2 + Cl2 -> 2HCl
D
BaCl2 + H2SO4 -> BaSO4 + 2HCl