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प्रश्न
Tick (√ ) the most appropriate answer.
When sulphur burns in oxygen, the colour of the flame is :
विकल्प
dazzling white
golden yellow
parrot green
brilliant blue
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उत्तर
brilliant blue
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संबंधित प्रश्न
A chemical called oxygenated water.
The natural way of adding oxygen to air which involves green plants is called
Fill in the blank:
Oxygen is slightly _________ than air.
How will you obtain dry oxygen in the laboratory?
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.
Write ‘True’ or ‘False’ in front of following statement.
Liquid oxygen is used for burning fuel in spaceships.
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
State any four physical properties of oxygen gas.
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
Phosphorous bums with suffocating smell and gives ______.
