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प्रश्न
Fill in the blank :
____________ discovered the oxygen gas.
उत्तर
Joseph Priestly discovered the oxygen gas.
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संबंधित प्रश्न
Two substances which undergo rapid oxidation.
What happens when mercuric oxide is heated?
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 _________.
Fill in the blank:
Oxygen occupies about ______ of air by volume.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
State two characteristics of Acidic oxides.
Complete and balance the following equation
Al + O2 →
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.
Statement given below is incorrect. Write the correct statement :
Moist oxygen causes rusting in carbon.
(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?
