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प्रश्न
Name one pair of substances whose mixture can be separated by fractional distillation.
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उत्तर
Water and alcohol, from a mixture of water and ethanol can be separated by fractional distillation.
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संबंधित प्रश्न
Which separation technique will you apply for the separation of the following?
Wheat grains from husk.
What is a mixture ? Give two example of mixtures.
Three mixtures A, B and C are obtained by stirring three different solids in water taken in separate beakers. When mixture A is allowed to stand for some time, then its particles settle at the bottom of the beaker. When a beam of light is passed through mixture A in a dark room, the path of light becomes visible when observed from the side of the beaker. When mixture B is allowed to stand for a considerable time, even then its particles do not settle down. Mixture B, however, scatters the beam of light just like mixture A. The particles of mixture C do not settle down on keeping and it also does not scatter a beam of light passing through it.
What are the mixtures like A known as ?
What are the mixtures like B known as ?
What are the mixtures like C known as ?
Name the phenomenon exhibited by A and B which occurs on passing a beam of light through them.
Name one mixture each which is like (i) A (ii) B, and (iii) C.
Name the solvent you would use to separate a mixture of sulphur and carbon.
Name the process you would use to separate ammonium chloride from a mixture of sodium chloride and ammonium chloride.
Why do we need pure substances?
State the technique involved in separating the following:
Iodine crystals and potassium chloride
State whether the following statement is true or false. If false write – the correct statement.
Heterogeneous mixtures have different composition and properties throughout the mixture.
A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?
What does the LPG (Liquefied petroleum gas) contain?
