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प्रश्न
How will you obtain dry oxygen in the laboratory?
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उत्तर
Dry oxygen can be obtained if the gas so collected is passed f over a tower containing drying agents like phosphorus pentaoxide, fused calcium chloride or bubbling the gas through concentrated sulphuric acid. Then the dry gas is collected by downward displacement of mer – cury.
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संबंधित प्रश्न
An oxide and a carbonate containing oxygen.
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
Fill in the blank:
Oxygen occupies about ______ of air by volume.
State the precautions while preparing oxygen in the labo-ratory.
State two characteristics of Acidic oxides.
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
Phosphorus pentaoxide on dissolving in water forms _________ acid.
State three uses of oxygen, other than artificial respiration.
Give tests for oxygen gas.
Mention the physical properties of oxygen.
