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प्रश्न
What is chromatography? For which type of mixture is it used?
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उत्तर
This is one of the latest techniques to separate the coloured components of a mixture when all the components are very similar in their properties. Example: Components of ink are separated by this method. Ink is a mixture of different dyes, which are separated by chromatography because some of the dyes are less soluble and some are more soluble in a solvent.
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संबंधित प्रश्न
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Water and alcohol
Match the ideal method of separation of components in a mixture in List I with the appropriate process in List II.
| List I | List II |
| 1. Sand from a mixture of sand and water | A: Separating funnel |
| 2. kerosene from a mixture of kerosene water | B: Sublimation |
| 3. Alcohol from a mixture of methyl alcohol and water | C: Filtration |
| 4. Naphthalene from a mixture of naphthalene and lead chloride | D: Distillation |
| 5. Pure water from impure water | E: Fractional distillation |
State any one method – to separate the following mixtures – A liquid-liquid mixture containing – two immiscible'' liquids having different densities
State any one method – to separate the following mixtures – A liquid-gas mixture containing – a gas dissolved in a liquid component.
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
Explain with a diagram the process used to – separate the following substance from the given mixture.
Potassium nitrate from a mixture of – potassium nitrate & potassium chlorate.
Give a reason for the following statement :
Components in a mixture can be separated by physical methods only.
Name the components in each of the following mixtures.
- Ice cream
- Lemonade
- Air
- Soil
Boojho’s grandmother is suffering from diabetes. Her doctor advised her to take ‘Lassi’ with less fat content. Which of the following methods would be most appropriate for Boojho to prepare it?
