1A filter aid is used to:AStop filtrationBImprove filtration of fine or slimy solidsCIncrease viscosityDDissolve the cakeView AnswerDiscussWorkspaceReportSaveEasy
2Agitation in tanks is characterised using the:AGrashof numberBPower number and impeller Reynolds numberCPrandtl numberDNusselt numberView AnswerDiscussWorkspaceReportSaveEasy
3Rittinger's law relates size-reduction energy to:AVolumeBWeight onlyCNew surface area producedDTemperatureView AnswerDiscussWorkspaceReportSaveEasy
4Screening separates particles by:AChemical compositionBDensityCColourDSizeView AnswerDiscussWorkspaceReportSaveEasy
5The critical speed of a ball mill is the speed at which:AThe mill stopsBBalls cling to the shell and stop tumblingCGrinding is fastestDBalls stop movingView AnswerDiscussWorkspaceReportSaveEasy