Question

how to prepare oxygen in laboratory

Answer 1

by electrolysis process we can separate hydrogen and oxygen

Answer 2

$<marquee>☺☺Hi there☺☺</marquee>$

Oxygen gas can be prepared in the laboratory by hydrogen peroxide and manganese dioxide. In this reaction manganese dioxide is used as catalyst. The apparatus is set up as shown in the figure. Hydrogen peroxide is poured in manganese dioxide and water having a conical flask with the help of a thistle funnel.

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