Question

Which reaction is not a redox reaction?

विकल्प

• \[\ce{H2 + Cl2 -> 2HCl}\]

• \[\ce{BaCl2 + Na2SO4 -> BaSO4 + 2NaCl}\]

• \[\ce{Zn + CuSO4 -> ZnSO4 + Cu}\]

• \[\ce{2KClO3 + I2 -> 2KIO3 + Cl2}\]

Answer 1

\[\ce{BaCl2 + Na2SO4 -> BaSO4 + 2NaCl}\]

Explanation:

A redox reaction is one in which reduction as well as oxidation take place simultaneously.

In the reaction:

\[\ce{BaCl2 + Na2SO4 -> BaSO4 + 2NaCl}\]

The oxidation numbers of all elements in the reactants and products are the same; therefore, oxidation and reduction do not occur, and it is not a redox reaction.