Question

Give the principle of the following techniques used in separation of mixture:

1] Centrifugation
2] Chromatography
3] Distillation

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Answer 1

Centrifugation - This technique is used to seperate the colloidal particles from the solvent by using principle of centifugal force. b) Chromatography - This seperation techinque is used to seperate the couloured components from same solvent.

Answer 2

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Give the principle of the following techniques used in separation of mixture:

• 1] Centrifugation = Two components having difference in densities can be separated by centrifugation. When the mixture is rotated fast, the lighter particles come to the top and the heavier remain at the bottom.
• 2] Chromatography = This method is used to separate a mixture of different dyes. It is based on the difference in solubilities of different solutes in the same solvent.
• 3] Distillation = Two miscible liquids can be separated by simple Distillation. It is based on the difference in boiling points of the liquid components of the mixture.

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