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प्रश्न
The most abundant element in the earth’s crust.
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उत्तर
Oxygen.
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संबंधित प्रश्न
Two substances from which oxygen can be obtained at a large scale.
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
Why is potassium chlorate not used for laboratory preparation of oxygen ?
Fill in the blank :
____________ discovered the oxygen gas.
Fill in the blank:
Manganese dioxide acts as a _________.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
How will you obtain dry oxygen in the laboratory?
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.
Give tests for oxygen gas.
