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प्रश्न
Name the elements present in Ammonia
उत्तर
Elements present in Ammonia:
Nitrogen and hydrogen
APPEARS IN
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.
Name the elements which form water.
How will you justify that water is a compound?
What is the proportion of element present in the following compound?
CO2
State the information obtained from the formula of a compound.
Write the molecular formulae of compound hydrogen sulphide.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties
What are compounds? Give two examples.
Explain the characteristics of compounds
Assertion: Air is a compound.
Reason: Air consists of carbon dioxide.
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 any four compounds and their uses.
What is meant by compound?
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 |
Higher-Order Thinking questions:
Why is water considered a compound?
The other name for potassium hydroxide is caustic potash.
A compound has a definite ______.
