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प्रश्न
Fill in the blank:
Oxygen occupies about ______ of air by volume.
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उत्तर
Oxygen occupies about 1/5 th of air by volume.
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संबंधित प्रश्न
The most abundant element in the earth’s crust.
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Statement given below is incorrect. Write the correct statement :
The percentage of oxygen in air by volume, varies from 21% to 22%.
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State two characteristics of Acidic oxides.
State two characteristics of Basic oxides.
Tick (√ ) the most appropriate answer.
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Give reason for the following:
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