The following reaction is used for the preparation of oxygen gas in the laboratory

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The following reaction is used for the preparation of oxygen gas in the laboratory

Which of the following statements (s) is/are correct about the reaction?

A. It is a decomposition reaction and endothermic in nature

B. It is a combination reaction

C. It is a decomposition reaction and accompanied by release of heat

D. It is a photochemical decomposition reaction and exothermic in nature

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