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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
Two substances from which oxygen can be obtained at a large scale.
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
Why is oxygen collected by downward displacement of water?
What happens when mercuric oxide is heated?
Name the three types of oxidation processes. In which of these large amount of heat and light energy are produced?
Fill in the blank :
____________ discovered the oxygen gas.
Complete and balance the following equation
S + O2 →
(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 tests for oxygen gas.
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
