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प्रश्न
Define Compounds
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उत्तर
Compounds: Compounds are pure substances composed of two or more elements in definite proportion by mass and has a definite set of properties. The compound is made up of only one kind of molecules
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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
Select the correct alternative from the choices given for the following statement:
A set of mixture is
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
What is the difference between a pure substance and a mixture ?
Name the elements present in Marble
State three differences between water and air.
Write the molecular formulae of compound calcium oxide.
Write the molecular formulae of compound lead sulphide.
Explain the term compounds.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to the term
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence
What is the molecular formula of the following compound?
Hydrochloric acid
Mention any four compounds and their uses.
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.
Write any two properties of a compound.
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
A compound has a definite ______.
Name the compounds used in fertilizers.
