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प्रश्न
Name the elements present in Washing soda
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उत्तर
Elements present in Washing soda:
Sodium, 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
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
What are the different types of mixtures ?
What is the proportion of element present in the following compound?
H2O
Write the molecular formulae of compound hydrogen sulphide.
Write the molecular formulae of compound lead sulphide.
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
What is the molecular formula of the following compound?
glucose
What are compounds? Give two examples.
Explain the characteristics of compounds
Match the following.
| Iron | For making wires |
| Copper | Sewing needle |
| Tungsten | As a fuel for ignition in rocket |
| Boron | Making the filament of a bulb |
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Write any two properties of a compound.
Higher-Order Thinking questions:
Why is water considered a compound?
