Question

The finer the suspended impurities to be removed ___________

a.

Larger will be the sand size

b.

Smaller will be the sand size

c.

Smaller will be the surface area of sand grains

d.

Narrow will be the sand depth of the bed

Answer: (b).Smaller will be the sand size

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Q. The finer the suspended impurities to be removed ___________

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