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Some chemicals are given in the box. Fin...

Some chemicals are given in the box. Find out and write down the chemicals needed to prepare oxygen and hydrogen in the laboratory.
[Sulphuric acid, Hydrochloric acid, sodium nitrite, Zinc, Potassium permanganate, Ammonium chloride, water]

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Oxygen - Potassium permanganate
Hydrogen - Zinc, Hydrochloric acid
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