Question

Name the method used to separate cream from curd.

Answer 1

Hint:In the given question we will understand about the method which is used for the separation of curd from cream. We will use a method to help separate mixtures, which follows a very high-speed rotation of a mixture within seconds.

Complete answer:When we have to separate the same state of mixture such as cream and curd as these particles are separated from a solution according to their density, size, shape, the viscosity of the medium and rotor speed. The technique or method used is known as centrifugation. And centrifugation is a technique for separating substances which includes the application of centrifugal force. The device is known as a centrifuge.
When the curd is rotated into the centrifuge at a very high speed the denser particles settle down at the bottom and the lighter one’s float over the surface and cream being lighter than curd will float on the top and can be easily extracted out of the curd and can be separated easily.
So, the centrifuge works on the principle of sedimentation Underneath the effect of gravitational force or g-force, and then the substances separate that depends upon their density.

Hence, the method used to separate cream from curd is centrifugation.

Note:The general formula for calculation of the revolutions per minute that is RPM of a centrifuge can be done by using formula \[RPM = \sqrt {\frac{g}{r}} \], where \[g\]signifies the force of the centrifuge that is gravitational force and \[r\]is the radius from the center of the rotor to the sample.