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प्रश्न
Give the example of a compound containing carbon and oxygen.
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उत्तर
Example of Atoms of a different element forming a compound
Carbon dioxide, 1 atom of carbon and 2 atoms of O = CO2
संबंधित प्रश्न
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 are the different types of mixtures ?
Define Compounds
What is the proportion of element present in the following compound?
H2O
Name two compounds which dissolve in water.
State three differences between water and air.
Write the molecular formulae of compound calcium oxide.
Write the molecular formulae of compound hydrogen sulphide.
What is the molecular formula of the following compound?
Sulphuric acid
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
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 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.
Reason out
Sand is also known as silica.
When does the pressure of the gas increase?
Name the compounds used in fertilizers.
