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प्रश्न
Name the elements present in Marble
उत्तर
Elements present in Marble:
Calcium, carbon & oxygen
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संबंधित प्रश्न
Name the process by which the components of following mixtures can be separated.
- Iron and sulphur
- Ammonium chloride and sand
- Common salt from sea water
- Chaff and grain
- Water and mustard oil
- Sugar and water
Write true or false
The constituents of a mixture can only be separated by chemical means.
What is the difference between a pure substance and a mixture ?
What is the proportion of element present in the following compound?
CaO
What is the proportion of element present in the following compound?
NO2
Write the molecular formulae of compound hydrogen sulphide.
Give the example of a compound containing hydrogen and oxygen.
Give the example of a compound containing calcium and oxygen.
State two characteristics of water which prove that it is a – compound.
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 existence
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
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Sodium chloride is used as table salt and for flavoring and preserving food.
Write any two properties of a compound.
Higher-Order Thinking questions:
Why is water considered a compound?
The other name for potassium hydroxide is caustic potash.
