Question

When is a substance said to be resuced in a chemical reaction?​

Answer 1

Answer is:-

In a chemical reaction,

A substance is said to be reduced if hydrogen is added to it or oxygen is removed from it.

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Answer 2

Explanation:

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When is a substance said to be resuced in a chemical reaction?

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If a substance gains hydrogen or combines with hydrogen, it is said to be reduced.More precisely, the substance which gains electrons is reduced in the reaction.On gaining electrons, the oxidation state/ charge on the substance decreases.