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प्रश्न
Explain with a diagram the process used to – separate the following substance from the given mixture.
Lead carbonate [insoluble] from a mixture of – lead carbonate & water.
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उत्तर
Evaporation: Lead carbonate can be separated by evaporation. On evaporation, water evaporates leaving behind solid lead carbonate which has higher M.P.
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संबंधित प्रश्न
Tick the most appropriate answer
The methods of separating components of a given mixture are based on the
- physical properties and state of the components.
- colour of the components only.
- state of the components.
- none of these
State any one method – to separate the following mixtures – Two solid mixtures one of which – dissolves in a – particular solvent and other does not
State any one method – to separate the following mixtures – A gas-gas mixture containing – two gases with different densities.
Explain with diagram the process used to – separate the following substance from the given mixtures - Iron from a mixture of – iron & copper
Give a reason for the following statement :
Zinc is considered an element, while zinc sulphide is considered a compound.
How can you separate a large quantity of tiny bits of paper mixed with pulses/dal?
Using suitable apparatus from your laboratory separate the mixture of chalk powder, mustard oil, water, and coins. Draw a flow chart to show the separation process.
What are the steps involved in the separation of sand, salt, and water?
Match the following
| Column A | Column B | ||
| 1. | Separation of salt from saltwater | a. | Magnetic separation |
| 2. | Separation of tea leaves from tea extract | b. | Evaporation |
| 3. | Separation of sand and iron filings | c. | Churning |
| 4. | Separation of butter from curds | d. | Filtration |
Match the mixtures in column I with their method of separation in column II.
| COLUMN I | COLUMN II | ||
| (a) | Oil mixed in water | (i) | Sieving |
| (b) | Iron powder mixed with flour | (ii) | Hand picking |
| (c) | Salt mixed with water | (iii) | Decantation |
| (d) | Lady’s finger mixed with french beans | (iv) | Magnet |
| (e) | Rice flour mixed with kidney beans | (v) | Evaporation |
