Question

How can we separate cream from milk?

Answer 1

Hint : Centrifugation process is used to separate cream from milk. Centrifugation is a mechanical process which involves the separation of particles from the solution in accordance to their density. This process involves the spinning of solution at very high speed around the axis of the centrifuge rotor.

Complete Step By Step Answer:
Milk is a suspension of cream (oil droplet) in water. In order to separate cream from milk, the centrifugation process is used. Centrifugation is a mechanical process which involves the separation of particles from the solution in accordance to their density. In this process, milk is rotated at a very high speed around the axis of the centrifuge rotor. In this way, centrifugal force is applied on the milk and as a consequence cream gets separate from milk. Cream has lesser density in comparison to skim milk and therefore floats on the surface and is easily separated by hand.
Hence, the centrifugation process is used to separate cream from milk.

Additional Information:
Besides, the Centrifugation process has also a wide range of other applications in day-to-day life. For instance,
-It is used in washing machines in order to dry clothes by squeezing out water.
-It is used in diagnostic labs such as urine test, blood tests.

Note :
It is important to note that milk is a suspension of cream in water. Centrifugation process is used to separate cream from milk. It is a mechanical process which involves the separation of particles from the solution in accordance to their density. Cream has lesser density in comparison to skim milk and therefore floats on the surface and is easily separated by hand.