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In which situation is a substance oxidised?

Answer and explanation

Correct answer: Oxygen is added to it

Oxidation is a process in which oxygen is added to a substance or hydrogen is removed from it. Therefore, a substance is oxidised when oxygen is added to it. In contrast, addition of hydrogen or removal of oxygen is reduction; a decrease in temperature alone does not indicate oxidation.

Related tags

ScienceClass 10Chemical ReactionsOxidationReductionRedox

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