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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
Two substances from which oxygen can be obtained at a large scale.
An oxide and a carbonate containing oxygen.
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
What happens when Magnesium burns in oxygen ? Also give the balanced chemical equation for the reaction.
State two characteristics of Acidic oxides.
State two characteristics of Basic oxides.
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.
Liquid oxygen is used for burning fuel in spaceships.
Write fully balanced equation for the following :
Na2O + H2O →
Oxygen is a poor conductor of heat and electricity.
