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प्रश्न
Give reasons for the following:
oxygens finds utility in welding & cutting of metals.
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उत्तर
Oxygen finds utility in welding and cutting of metals because of Oxy-acetylene flame provides temperature aroud 3000° C and oxy-hydrogen flame provides temperature around 2800°C.
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संबंधित प्रश्न
Name the three types of oxidation processes. In which of these large amount of heat and light energy are produced?
Fill in the blank :
Oxygen occupies about _____% of air by volume.
State the precautions while preparing oxygen in the labo-ratory.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Phosphorus pentaoxide on dissolving in water forms _________ acid.
Statement given below is incorrect. Write the correct statement :
The oxygen gas turns moist blue litmus red.
Tick (√ ) the most appropriate answer.
When sulphur burns in oxygen, the colour of the flame 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?
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
Phosphorous bums with suffocating smell and gives ______.
Write about the combustible property of Oxygen.
