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प्रश्न
How will you identify oxygen in the laboratory ?
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उत्तर
Oxygen is a colourless and odourless gas which rekindles a glow¬ing splinter.
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संबंधित प्रश्न
Give four uses of oxygen.
Statement given below is incorrect. Write the correct statement :
The percentage of oxygen in air by volume, varies from 21% to 22%.
What happens when Magnesium burns in oxygen ? Also give the balanced chemical equation for the reaction.
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
The nitric oxide gas reacts with the oxygen and water vapour to form ______ vapour.
Statement given below is incorrect. Write the correct statement :
Moist oxygen causes rusting in carbon.
State any four physical properties of oxygen gas.
Write fully balanced equation for the following :
SO2 + H2O →
Give reasons for the following:
oxygens finds utility in welding & cutting of metals.
Mention the physical properties of oxygen.
