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प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium
Every nine parts of water by weight contains eight parts by weight of _________.
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उत्तर
Every nine parts of water by weight contains eight parts by weight of oxygen.
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संबंधित प्रश्न
Two substances from which oxygen can be obtained at a large scale.
Why is oxygen collected by downward displacement of water?
Fill in the blank:
Oxygen is slightly _________ than air.
Fill in the blanks:
Oxygen is collected by the __________ displacement of ________.
Fill in the blank:
Oxygen occupies about ______ of air by volume.
State the precautions while preparing oxygen in the labo-ratory.
Tick (√ ) the most appropriate answer.
When sulphur burns in oxygen, the colour of the flame is :
Describe what you will observe and write fully balanced equation when the following is introduced in a jar of oxygen.
Burning magnesium
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.
