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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
Two substances from which oxygen can be obtained at a large scale.
Two substances which undergo rapid oxidation.
Why is potassium chlorate not used for laboratory preparation of oxygen ?
Statement given below is incorrect. Write the correct statement :
The percentage of oxygen in air by volume, varies from 21% to 22%.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
State two characteristics of Basic oxides.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
The nitric oxide gas reacts with the oxygen and water vapour to form ______ vapour.
Statement given below is incorrect. Write the correct statement :
The oxygen gas turns moist blue litmus red.
Write ‘True’ or ‘False’ in front of following statement.
Under laboratory conditions, the oxygen gas is insoluble in water.
Tick (√ ) the most appropriate answer.
Sodium burns in oxygen with a flame which is :
