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प्रश्न
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
विकल्प
Magnesium oxide
Manganese oxide
Manganese dioxide
Manganese hydroxide
उत्तर
Manganese dioxide
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संबंधित प्रश्न
A chemical called oxygenated water.
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
Why is potassium chlorate not used for laboratory preparation of oxygen ?
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium
Every nine parts of water by weight contains eight parts by weight of _________.
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.
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 :
Mention the physical properties of oxygen.
Write about the combustible property of Oxygen.
