A) Cohesive force
B) Gravitational force
C) Centripetal force
D) Centrifugal force
Correct Answer: D
Solution :
The separation of cream from milk in the centrifugal separator is based on the fact that when liquids of different specific gravities revolve around the same centre at the same distance with the same angular velocity, a greater centrifugal force is exerted on the heavier liquid than on the lighter one.
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