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Question

Which of the following methods is used when the ore particles have different densities?

A
handpicking
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B
washing
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C
magnetic separation
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D
froth flotation
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Solution

The correct option is B washing
Ore particles are crushed and kept on a sloped surface. They are washed with a controlled flow of water. Less dense impurities are carried away by the water flow, leaving the more dense ore particles behind.

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