Mechanical Operations
Driving force in case of filtration by a centrifuge is the

Formation of highly porous cake
Speed of the centrifuge
Narrow diameter of the vessel
Centrifugal pressure exerted by the liquid

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Mechanical Operations
Cumulative analysis for determining surface is more precise than differential analysis, because of the

None of these
Assumption that all particles in a single fraction are equal in size, is not needed
Fact that screening is more effective
Assumption that all particles in a single fraction are equal in size

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