Question

Which of the following is not an example of a redox react?

1. (i) ZnO + C → Zn + CO
2. (ii) MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
3. (iii) 4Na + O2 → 2Na2O
4. (iv) AgNO3 + NaCl → AgCl + NaNO3

• A. ii, iv
• B. i, iii
• C. iv only
• D. None of these

Answer 1

Answer:

C. iv only

The reaction AgNO3 + NaCl → AgCl + NaNO3 is a double displacement reaction, not a redox reaction. Oxidation–reduction reactions, commonly known as redox reactions, are reactions that involve the transfer of electrons from one species to another. The species that loses electrons is said to be oxidized, while the species that gains electrons is said to be reduced