Question

Oxygen is prepared in laboratory by heating _________​

Answer 1

Answer:

In a laboratory oxygen gas is prepare by heating the potassium chlorate and manganese dioxide acts as a catalyst.

Answer 2

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Oхчgєn íѕ prєpαrєd ín lαвσrrαtσtч вч hєαtíng pσtαѕѕíum chlσrαtє mαgαnєѕє díσхídє uѕєd αѕ α cαtαlчѕt