Q.

The washing machine works on the principle of –

A. Dialysis
B. Diffusion
C. Reverse osmosis
D. Centrifugation
Answer» D. Centrifugation
Explanation: Washing machines work on the principle of centrifugation. They are based onmedium sized centrifuges that put an object in rotation around a fixed axis, applying force perpendicular to the axis.
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