Discussion
A sieve analysis of ground material is normally reported as
Answer: C
Correct answer: The mass retained on each sieve
A sieve analysis reports the mass retained on each sieve of a nested stack, usually as a percentage of the total charge, from which a cumulative distribution and a mean particle size are derived.
Mass is used because it is what a balance measures directly and what the process cares about. Counting particles would be impractical and would weight a single coarse grain the same as a fine one, and bulk density varies with packing rather than with the size distribution the analysis is meant to characterise.
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