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#1 2017-01-31 06:51:57

Ibraheem
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________ is used as catalyst in the preparation of Oxygen.

11th Class Quizzes 11th Class Chemistry

Question:
________ is used as catalyst in the preparation of Oxygen.

Option A):
MnO₂
Option B):
CaCO₃
Option C):
NH₄Cl

Correct Answer is Option A):
MnO₂

2017-01-31 06:51:57

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