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प्रश्न
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
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उत्तर
Oxygen is neutral in nature, So, it does not affect blue litmus paper. Whereas Carbon dioxide is slightly acidic in nature, So, it changes blue litmus to slightly pink.
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संबंधित प्रश्न
Two substances which undergo rapid oxidation.
What happens when mercuric oxide is heated?
What happens when potassium nitrate is heated
Why is potassium chlorate not used for laboratory preparation of oxygen ?
How is oxygen naturally renewed in air ?
Fill in the blank:
Oxygen is slightly _________ than air.
State the use of manganese dioxide in the laboratory prepa-ration of oxygen from potassium chlorate.
State the precautions while preparing oxygen in the labo-ratory.
Tick (√ ) the most appropriate answer.
Sodium burns in oxygen with a flame which is :
(a) Starting from hydrogen peroxide how is oxygen gas prepared in laboratory?
(b) What is the function of manganese dioxide?
(c) Write fully balanced equation for the liberation of oxygen from hydrogen peroxide.
(d) Why is the above method preferred to any other method?
