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प्रश्न
Give tests for oxygen gas.
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उत्तर
Tests for oxygen gas are :
- It rekindles glowing wooden splinter.
- If mixed with colourless nitric oxide gas, it forms reddish brown fumes of nitrogen dioxide.
- It dissolves in alkaline pyrogallol solution and turns it brown.
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संबंधित प्रश्न
Two substances from which oxygen can be obtained at a large scale.
Two substances which undergo rapid oxidation.
Name the three types of oxidation processes. In which of these large amount of heat and light energy are produced?
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 _________.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
State the use of manganese dioxide in the laboratory prepa-ration of oxygen from potassium chlorate.
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.
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.
