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प्रश्न
Give four uses of oxygen.
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उत्तर
Uses of oxygen
- Oxygen is used by firemen, miners, aviators, sea divers and even by every living being.
- Oxygen is necessary for burning of fuels.
- Oxygen mixed with hydrogen as fuel produces.a flame with a very high temperature about 2800°C.
- As a fuel in spacecraft.
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संबंधित प्रश्न
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
How is oxygen naturally renewed in air ?
Fill in the blank :
Oxygen occupies about _____% of air by volume.
Fill in the blanks:
Oxygen is collected by the __________ displacement of ________.
Fill in the blank:
Oxygen is ___________ to litmus testing.
Statement given below is incorrect. Write the correct statement :
Oxygen is prepared in laboratory by treating hydrogen oxide with manganese dioxide.
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.
Write fully balanced equation for the following :
Na2O + H2O →
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
