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प्रश्न
Name the elements present in Marble
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उत्तर
Elements present in Marble:
Calcium, carbon & oxygen
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संबंधित प्रश्न
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
Write true or false
The constituents of a mixture can only be separated by chemical means.
Write the molecular formulae of compound calcium oxide.
Write the molecular formulae of compound lead sulphide.
Give the example of a compound containing hydrogen and oxygen.
Select the correct answer from the choice given below.
A compound
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to Separation of compound
What is the molecular formula of the following compound?
glucose
Explain the difference between Mixture and compounds.
Assertion: Air is a compound.
Reason: Air consists of carbon dioxide.
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
Sodium chloride is used as table salt and for flavoring and preserving food.
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
Reason out
Sand is also known as silica.
When does the pressure of the gas increase?
