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प्रश्न
Fill in the blanks:
Oxygen is collected by the __________ displacement of ________.
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उत्तर
Oxygen is collected by the downward displacement of water.
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संबंधित प्रश्न
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
Why is oxygen collected by downward displacement of water?
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
Fill in the blank :
Oxygen occupies about _____% of air by volume.
What happens when Sulphur burns in oxygen ? Also give the balanced chemical equation for the reaction.
State two characteristics of Basic oxides.
Complete and balance the following equation
\[\ce{N2 + O2 ->[3000°C]}\]
Statement given below is incorrect. Write the correct statement :
Calcium burns in oxygen with a golden-yellow flame.
Write ‘True’ or ‘False’ in front of following statement.
Liquid oxygen is used for burning fuel in spaceships.
(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?
