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प्रश्न
What is the proportion of element present in the following compound?
H2O
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उत्तर
| Compound | Element | Proportion of Element |
| H2O | H : O | 1 : 8 |
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संबंधित प्रश्न
Define Compounds
Name the elements which form water.
How will you justify that water is a compound?
Name the elements present in Marble
Name two compounds which dissolve in water.
State four differences between compounds and mixtures.
Write the molecular formulae of compound carbon monoxide
Give the example of a compound containing nitrogen and oxygen.
Give the example of a compound containing calcium and oxygen.
State two characteristics of water which prove that it is 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
Explain the difference between Mixture and compounds.
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
What are compounds? Give two examples.
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.
Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
Higher-Order Thinking questions:
Why is water considered a compound?
The other name for potassium hydroxide is caustic potash.
