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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
Fill in the blank :
____________ discovered the oxygen gas.
The natural way of adding oxygen to air which involves green plants is called
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.
(a) Starting from hydrogen peroxide how is oxygen gas prepared in laboratory?
(b) What is the function of manganese dioxide?
(c) Write fully balanced equation for the liberation of oxygen from hydrogen peroxide.
(d) Why is the above method preferred to any other method?
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
Mention the physical properties of oxygen.
Write about the combustible property of Oxygen.
Write a note on the rusting process.
