Which of the following process is used to remove impurities from dispersion medium in Ultracentrifugation?

Filtration

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Decantation

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Sedimentation

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Any of the above

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Solution

The correct option is B Decantation
Decantation is the process used to remove impurities from dispersion medium in Ultracentrifugation. This is one of the most accurate method of purification, centrifugation and decanting are used together; we use the centrifuge to separate the solid and the liquid then decant the liquid off the top, however a small amount of the liquid is always left behind.

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Which of the following is used during filtration for removing insoluble impurities from a liquid mixture?

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