16Sedimentation separates particles by:ASize using screensBEvaporationCSettling under gravityDMagnetic fieldsView AnswerDiscussWorkspaceReportSaveEasy
17Agitation in tanks is characterised using the:APrandtl numberBPower number and impeller Reynolds numberCNusselt numberDGrashof numberView AnswerDiscussWorkspaceReportSaveEasy
18The critical speed of a ball mill is the speed at which:ABalls cling to the shell and stop tumblingBThe mill stopsCGrinding is fastestDBalls stop movingView AnswerDiscussWorkspaceReportSaveEasy