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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
Fill in the blank :
____________ discovered the oxygen gas.
The natural way of adding oxygen to air which involves green plants is called
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Oxygen occupies about ______ of air by volume.
Fill in the blank:
Oxygen is ___________ to litmus testing.
What happens when Sulphur burns in oxygen ? Also give the balanced chemical equation for the reaction.
State two characteristics of Basic oxides.
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 :
Oxygen is prepared in laboratory by treating hydrogen oxide with manganese dioxide.
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
Mention the physical properties of oxygen.
