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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
The most abundant element in the earth’s crust.
What happens when a glowing splinter is introduced in a jar containing oxygen ?
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 is slightly _________ than air.
Fill in the blank:
Manganese dioxide acts as a _________.
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
Potassium nitrate crystals on heating strongly yield potassium nitrite and ________ gas.
Write ‘True’ or ‘False’ in front of following statement.
Under laboratory conditions, the oxygen gas is insoluble in water.
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
Write about the combustible property of Oxygen.
