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प्रश्न
What is the role of manganese dioxide in the preparation of oxygen?
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उत्तर
Manganese dioxides acts as a catalyst.
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संबंधित प्रश्न
Two substances which undergo rapid oxidation.
Fill in the blank:
Oxygen is ___________ to litmus testing.
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.
How will you identify 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.
Under laboratory conditions, the oxygen gas is insoluble in water.
State any four physical properties of oxygen gas.
Describe what you will observe and write fully balanced equation when the following is introduced in a jar of oxygen.
Burning magnesium
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
