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प्रश्न
Statement given below is incorrect. Write the correct statement :
Oxygen is prepared in laboratory by treating hydrogen oxide with manganese dioxide.
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उत्तर
Oxygen is prepared in laboratory by treating hydrogen peroxide with manganese dioxide.
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संबंधित प्रश्न
Two substances which undergo rapid oxidation.
Fill in the blank :
____________ discovered the oxygen gas.
Fill in the blank:
Oxygen occupies about ______ of air by volume.
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.
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\[\ce{N2 + O2 ->[3000°C]}\]
Statement given below is incorrect. Write the correct statement :
The oxygen gas turns moist blue litmus red.
Tick (√ ) the most appropriate answer.
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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 →
