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प्रश्न
What is the role of manganese dioxide in the preparation of oxygen?
उत्तर
Manganese dioxides acts as a catalyst.
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संबंधित प्रश्न
Two substances from which oxygen can be obtained at a large scale.
Fill in the blank :
Oxygen occupies about _____% of air by volume.
Fill in the blank:
Oxygen is ___________ to litmus testing.
How will you identify oxygen in the laboratory ?
Statement given below is incorrect. Write the correct statement :
Oxygen is prepared in laboratory by treating hydrogen oxide with manganese dioxide.
Statement given below is incorrect. Write the correct statement :
The oxygen gas turns moist blue litmus red.
Tick (√ ) the most appropriate answer.
Sodium burns in oxygen with a flame which is :
Tick (√ ) the most appropriate answer.
When sulphur burns in oxygen, the colour of the flame is :
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
Write the reaction of oxygen with non–metals.
