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प्रश्न
Two substances from which oxygen can be obtained at a large scale.
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उत्तर
Air, water.
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संबंधित प्रश्न
What is the role of manganese dioxide in the preparation of oxygen?
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
What happens when Sulphur burns in oxygen ? Also give the balanced chemical equation for the reaction.
Complete and balance the following equation
S + O2 →
Statement given below is incorrect. Write the correct statement :
Calcium burns in oxygen with a golden-yellow flame.
Statement given below is incorrect. Write the correct statement :
Moist oxygen causes rusting in carbon.
(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?
State three uses of oxygen, other than artificial respiration.
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.
