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प्रश्न
How will you separate common salt, sand and iron filings from their mixture ?
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उत्तर
We will separate common salt, sand and iron filings from their mixture by using a magnet, filtration and evaporation.
First, a magnet is moved over a mixture of iron filings, sand and common salt. In the process, iron filings are separated by the magnet. After that, sand and common salt are mixed in water. While salt dissolves in water, sand does not. So, sand is separated by filtration. On heating the filtrate, all the water evaporates from the mixture and salt crystals are left behind.
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संबंधित प्रश्न
List five characteristics by which compounds can be distinguished form mixtures.
Classify the following materials as homogeneous mixtures and heterogeneous mixtures :
Soda-water, Wood, Air, Soil, Vinegar, Alcohol and water mixture, Petrol and water mixture, Chalk and water mixture, Sugar and water mixture, Copper sulphate solution.
Name the solvent you would use to separate a mixture of sulphur and carbon.
How will you separate a mixture of chalk powder and water?
Give an example of mixtures of elements and compounds.
With reference to the mixture of iron and sulphur, state the main characteristics of the mixture.
State whether the following statement is true or false. If false write – the correct statement.
Mixture has no definite set of properties.
Give an example for mixture and justify your answer with reason.
A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?
What would you observe when
a mixture of iron filings and sulphur powder is heated strongly
