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Question

Sedimentation rates can be increased by using:

A
frictional force
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B
centripetal force
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C
magnetic force
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D
gravitational force
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Solution

The correct option is B centripetal force
Very fine solid particles can be separated from the mixture using centrifugation. Particles of different densities or sizes in a suspension will sediment at different rates, with the larger and denser particles sedimenting faster. These sedimentation rates can be increased by using centrifugal force.

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