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प्रश्न
Two substances from which oxygen can be obtained at a large scale.
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उत्तर
Air, water.
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संबंधित प्रश्न
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
What happens when oxygen gas is passed through alkaline pyrogallol solution ?
How is oxygen naturally renewed in air ?
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
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
Write fully balanced equation for the following :
Na2O + H2O →
Write the reaction of oxygen with non–metals.
