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प्रश्न
State three uses of oxygen, other than artificial respiration.
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उत्तर
Uses of oxygen are :
- Spaceships : Liquid oxygen is used for burning fuel in rockets and spaceships as there is no air in the space.
- Cutting and welding : Oxygen and hydrogen are made to bum in a specially designed torch. The oxy- hydrogen flame can easily melt metals and used for cutting and welding them.
- Chemical industry : Oxygen is used in large amount for preparing sulphuric acid from sulphur and nitric acid from ammonia.
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संबंधित प्रश्न
What happens when potassium nitrate is heated
Why is potassium chlorate not used for laboratory preparation of oxygen ?
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.
How will you obtain dry oxygen in the laboratory?
Write ‘True’ or ‘False’ in front of following statement.
Under laboratory conditions, the oxygen gas is insoluble in water.
Tick (√ ) the most appropriate answer.
Sodium burns in oxygen with a flame which is :
(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?
Write the reaction of oxygen with non–metals.
