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प्रश्न
State the use of manganese dioxide in the laboratory prepa-ration of oxygen from potassium chlorate.
उत्तर
In the laboratory preparation of oxygen from potassium chlor¬ate, manganese dioxide acts as a catalyst i.e. it increase the rate of production of oxygen without getting itself consumed.
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संबंधित प्रश्न
Two substances from which oxygen can be obtained at a large scale.
Two substances which undergo rapid oxidation.
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
What happens when mercuric oxide is heated?
Why is potassium chlorate not used for laboratory preparation of oxygen ?
Fill in the blanks:
Oxygen is collected by the __________ displacement of ________.
Complete and balance the following equation
S + O2 →
Give reason for the following:
Oxidation of sulphur results in a product which turns moist blue litmus red.
Mention the physical properties of oxygen.
Write a note on the rusting process.
