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प्रश्न
What happens when Magnesium burns in oxygen ? Also give the balanced chemical equation for the reaction.
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उत्तर
Magnesium bums with a bright dazzling light, forming the white powder of magnesium oxide.
2Mg + O2 → 2MgO + hea
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संबंधित प्रश्न
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
Statement given below is incorrect. Write the correct statement :
The percentage of oxygen in air by volume, varies from 21% to 22%.
Statement given below is incorrect. Write the correct statement :
Oxygen is prepared in laboratory by treating hydrogen oxide with manganese dioxide.
Write ‘True’ or ‘False’ in front of following statement.
Under laboratory conditions, the oxygen gas is insoluble in water.
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
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?
State any four physical properties of oxygen gas.
Give tests for oxygen gas.
Phosphorous bums with suffocating smell and gives ______.
