Chemical Engineering MCQs

Page No. 612

In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called _____________ is produced?


aConcentrate


bTailing


cMiddling


dNone of these


View Answer Middling

Moore filter is a ______________ filter ?


aLeaf


bPress


cRotary


dSand


View Answer Leaf

Solid particles of different densities are separated by _____________________?


aFilters


bThickness


cCyclones


dSorting classifier


View Answer Sorting classifier

Raw materials are charged in the iron blast furnace using____________________?


aBucket elevator


bSkip hoist


cScrew conveyor


dNone of these


View Answer Skip hoist

Pine oil used in froth floatation technique acts as a/an_____________________?


aCollector


bModifier


cFrother


dActivator


View Answer Frother

_______________ is a cohesive solid ?


aWheat


bSand


cWet clay


dNone of these


View Answer Wet clay

Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?


aBond’s crushing law


bKick’s law


cRittinger’s law


dNone of these


View Answer Rittinger’s law

Use of ‘grinding aids’ is done in _______________ grinding?


aDry


bWet


cUltrafine


dIntermediate


View Answer Dry

In constant pressure filtration ?


aResistance decreases with time


bRate of filtration is constant


cRate of filtration increases with time


dRate of filtration decreases with time



The process by which fine solids is removed from liquids is termed as _____________________?


aDecantation


bFlocculation


cSedimentation


dClassification


View Answer Sedimentation

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