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प्रश्न
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
विकल्प
Magnesium oxide
Manganese oxide
Manganese dioxide
Manganese hydroxide
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उत्तर
Manganese dioxide
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संबंधित प्रश्न
What is the role of manganese dioxide in the preparation of oxygen?
What happens when potassium nitrate is heated
Fill in the blank:
Manganese dioxide acts as a _________.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
What happens when Magnesium burns in oxygen ? Also give the balanced chemical equation for the reaction.
Statement given below is incorrect. Write the correct statement :
Moist oxygen causes rusting in carbon.
Write ‘True’ or ‘False’ in front of following statement.
Under laboratory conditions, the oxygen gas is insoluble in water.
State any four physical properties of oxygen gas.
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
Write a note on the rusting process.
