Redox and Equivalent ConceptHard

Question

Which of the following is a redox reaction ?

Options

A.NaCl + KNO3 → NaNO3 + KCl
B.CaC2O4 + 2HCl → CaCl + H2C2O4
C.Mg(OH)2 + 2NH4Cl → MgCl2 + 2NH4OH
D.Zn + 2AgCN → 2Ag + Zn(CN)2

Solution

The oxidation states show a change only in reaction (d)

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