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प्रश्न
The most abundant element in the earth’s crust.
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उत्तर
Oxygen.
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संबंधित प्रश्न
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
Fill in the blank:
Manganese dioxide acts as a _________.
What happens when Sulphur burns in oxygen ? Also give the balanced chemical equation for the reaction.
How will you obtain dry oxygen in the laboratory?
Complete and balance the following equation
Al + O2 →
Statement given below is incorrect. Write the correct statement :
Oxygen is prepared in laboratory by treating hydrogen oxide with manganese dioxide.
Statement given below is incorrect. Write the correct statement :
The oxygen gas turns moist blue litmus red.
Give tests for oxygen gas.
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
Give reason for the following:
Oxygen gas does not affect moist blue litmus paper, but carbon dioxide turns it slightly pink.
