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प्रश्न
Give a reason for the following statement :
Components in a mixture can be separated by physical methods only.
उत्तर
Components of a mixture can be separated by physical methods because particles remain separate without chemical reactions between them.
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संबंधित प्रश्न
Write true or false
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
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 solid-liquid mixture containing – a soluble solids in the liquid component
State any one method – to separate the following mixtures – A liquid-gas mixture containing – a gas dissolved in a liquid component.
Explain with diagram the process used to – separate the following substance from the given mixtures - Iron from a mixture of – iron & copper
Explain with diagram the process used to – separate the following substance from the given mixtures - Sulphur from a mixture of – sulphur & copper.
Explain with diagram the process used to – separate the following substance from the given mixtures - Lead nitrate [soluble] from a mixture of – lead nitrate & water Le. lead nitrate solution.
Explain with diagram the process used to – separate the following substance from the given mixtures - Carbon tetrachloride from a mixture of – carbon tetrachloride [heavier component] & water.
Very Short Answer Type Question:
What types of material can we separate by using handpicking?
Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice to cool it. Should you add ice to the lemonade before or after dissolving sugar? In which case would it be possible to dissolve more sugar?
