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Question

Q4. State the principle used in separating different components of a mixture by the method of centrifugation. List any two applications of this method.​

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Solution

Centrifugation is defined as the process of separating the components of a mixture by continuously agitating the mixture at a very high speed. It utilizes the centrifugal force, generated by spinning a device manually or by a spinning motor, to separate molecules by size or density. The principle is that the denser particles are forced to the bottom and the lighter particles stay at the top when spun rapidly.

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  • used in dairies and home to separate cream from milk or butter from cream.

  • used in washing machines to squeeze out water from clothes.

  • used in diagnostic labs for blood and urine test.

  • used in laboratories to separate colloidal particles from their solutions.

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