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प्रश्न
Differentiate between homogeneous and heterogeneous mixtures with suitable examples.
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उत्तर १
| Homogeneous mixture |
Heterogeneous mixture |
| These are called as solutions |
These are called as suspensions/colloids |
| Substances are Uniformly distributed |
These substances are Unevenly distributed |
| These are not visible to the naked eye, but visible through the microscope |
These are easily visible to the naked eye and also through a microscope |
| The particles appear smaller in size | The particles are either smaller or larger in size |
| These are pure substances |
These are not pure substances |
| They represent the same physical properties |
They do not possess the same physical properties |
| Examples include milk, gasoline, sugar solution, corn oil, fog, etc | Examples are a mixture of mud & water, beach sand, vinegar, air cloud, etc |
उत्तर २
The main characteristics of the mixture (Iron + Sulphur) are :
Homogeneous mixtures :
- There constituents are uniformly mixed.
- The properties and composition are the same throughout the mixture.
Examples:
- alcohol and water
- salt and water
- sugar and water
Heterogeneous mixtures :
- Their constituents are not uniformly mixed.
- The properties and composition vary throughout the mixture.
Examples:
- oil and water
- sand and water
- chalk and water
संबंधित प्रश्न
A mixture contains water, kerosene and sand. How will you separate this mixture ?
A mixture of milk and groundnut oil can be separated by :
Seawater tastes salty due to the dissolved salt. the salinity (the proportion of salts in water) of some water bodies Lonar lake - 7.9 %, Pacific Ocean 3.5%, Mediterranean sea - 3.8%, Dead sea - 33.7%. Explain two characteristics of the mixture from the above information.
Name the components present in the following mixture:
Brass
Name the components present in the following mixture:
Duralumin
Define Miscible liquids
Why do we need pure substances?
Name four substances that can be used as filters.
With reference to the mixture of iron and sulphur, state the main characteristics of the mixture.
Which of the following are physical changes?
(i) Melting of iron metal
(ii) Rusting of iron
(iii) Bending of an iron rod
(iv) Drawing a wire of iron metal
