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What is purification?
We have noted that the majority of natural substances are not chemically pure. Various separation methods are used to separate individual components from a mixture. Separation allows researchers to investigate and use the individual components of a mixture.
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Purification methods

Simple physical methods used in everyday life, such as handpicking, sieving, and filtration, can be used to distinguish heterogeneous mixtures into their constituents.
It is essential to separate mixtures in order to obtain the required substances, which are further used in important sectors like industry, agriculture, etc.
Separation of rice grains from husk
Separation of nuts from fruit
In science, it is often necessary to separate substances from mixtures to obtain the required substance.
Purification of substances is nothing but the process of removal of impurities present in the substance. Separating the components of a mixture will often necessitate the use of specialised techniques.
For this purpose, the purification methods are used accordingly
  • Evaporation
  • Crystallisation
  • Distillation
  • Fractional distillation
  • Chromatography
  • Centrifugation
  • Separating funnel
  • Sublimation