Chemistry
Grade-8
Easy
Question
The two miscible liquids can be separated by
- Sublimation
- Distillation
- Crystallization
- Chromatography
Hint:
Distillation is a method of separating mixtures based on differences in volatility of components in a boiling liquid mixture.
The correct answer is: Distillation
Distillation is a method of separating mixtures based on differences in volatility of components in a boiling liquid mixture.
Distillation refers to the selective boiling and subsequent condensation of a component in a liquid mixture. It is a separation technique that can be used to either increase the concentration of a particular component in the mixture or to obtain (almost) pure components from the mixture.
The two miscible liquids can be separated by distillation
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The principle of chromatography is based on
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Separation by magnet is most beneficial for separating:
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Identify the incorrect statement/s from the following:
(i) Crystallization is better than evaporation because some substance might get decomposed on heating.
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(i) Crystallization is better than evaporation because some substance might get decomposed on heating.
(ii) Sometimes, sublimation can be used to separate the salt from sea water.
(iii) A mixture of iron fillings and aluminium powder can be separated by a magnet.
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A mixture of A and B is taken in China dish. If the magnet is brought near it, substance B gets attracted to this magnet. This substance B clings to the poles of magnet and gets separated. The remaining substance A when heated, it directly converts into its vapours.
Identify these substances A and B of given mixture from the following:
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Study the given flow chart and choose the correct statements.
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III. Sulphur is soluble in carbon disulphide and salt and coal are insoluble in water and carbon disulphide.
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I. X is water and Y is carbon disulphide.
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III. Sulphur is soluble in carbon disulphide and salt and coal are insoluble in water and carbon disulphide.
ChemistryGrade-8
