MCQOPTIONS
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| 1. |
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» C. Smaller will be the surface area of sand grains | |