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प्रश्न
The natural way of adding oxygen to air which involves green plants is called
विकल्प
photosynthesis
respiration
burning
dissolution
उत्तर
photosynthesis
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संबंधित प्रश्न
What happens when a glowing splinter is introduced in a jar containing oxygen ?
Fill in the blank :
____________ discovered the oxygen gas.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
State the use of manganese dioxide in the laboratory prepa-ration of oxygen from potassium chlorate.
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.
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.
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
Describe what you will observe and write fully balanced equation when the following is introduced in a jar of oxygen.
Burning magnesium
Give tests for oxygen gas.
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
