Oxidation is a chemical process involving the loss of electrons, gain of oxygen, or loss of hydrogen. Redox reactions involve both oxidation and reduction. Precipitation reactions, where insoluble salts form from the mixing of solutions, are generally non-redox reactions if the oxidation states of the ions remain unchanged.
Which one of the following is not an example of an oxidation reaction ?
Asked in UPSC CDS 1 2022 · UPSC CDS 1 2023 · Topic: Physical and Chemical Changes, Solution (Definition and Characteristics of Chemical Changes (Chemical Reactions))
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Answer: B. A white substance is formed when an aqueous solution of barium chloride is mixed with sodium sulphate solution
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