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प्रश्न
Fill in the blanks:
Oxygen is collected by the __________ displacement of ________.
उत्तर
Oxygen is collected by the downward displacement of water.
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संबंधित प्रश्न
Two substances from which oxygen can be obtained at a large scale.
What happens when a glowing splinter is introduced in a jar containing oxygen ?
Give four uses of oxygen.
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 _________.
Statement given below is incorrect. Write the correct statement :
The percentage of oxygen in air by volume, varies from 21% to 22%.
Fill in the blank:
Oxygen is ___________ to litmus testing.
State the use of manganese dioxide in the laboratory prepa-ration of oxygen from potassium chlorate.
Statement given below is incorrect. Write the correct statement :
Moist oxygen causes rusting in carbon.
Give reason for the following:
Oxidation of sulphur results in a product which turns moist blue litmus red.
Write about the combustible property of Oxygen.
