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प्रश्न
The natural way of adding oxygen to air which involves green plants is called
विकल्प
photosynthesis
respiration
burning
dissolution
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उत्तर
photosynthesis
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संबंधित प्रश्न
Two substances from which oxygen can be obtained at a large scale.
Why is oxygen collected by downward displacement of water?
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
Fill in the blanks:
Oxygen is collected by the __________ displacement of ________.
What happens when Sulphur burns in oxygen ? Also give the balanced chemical equation for the reaction.
What happens when Magnesium burns in oxygen ? Also give the balanced chemical equation for the reaction.
How will you obtain dry oxygen in the laboratory?
Statement given below is incorrect. Write the correct statement :
Calcium burns in oxygen with a golden-yellow flame.
Tick (√ ) the most appropriate answer.
Sodium burns in oxygen with a flame which is :
Give reasons for the following:
patients suffering from lung problems are kept in an oxygen tent.
