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

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bTailing

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cMiddling

✓


dNone of these

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View Answer Middling

Moore filter is a ______________ filter ?


aLeaf

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bPress

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cRotary

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dSand

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View Answer Leaf

Solid particles of different densities are separated by _____________________?


aFilters

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bThickness

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cCyclones

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dSorting classifier

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View Answer Sorting classifier

Raw materials are charged in the iron blast furnace using____________________?


aBucket elevator

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bSkip hoist

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cScrew conveyor

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dNone of these

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View Answer Skip hoist

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


aCollector

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bModifier

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cFrother

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dActivator

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View Answer Frother

_______________ is a cohesive solid ?


aWheat

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bSand

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cWet clay

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dNone of these

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View Answer Wet clay

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


aBond’s crushing law

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bKick’s law

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cRittinger’s law

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dNone of these

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View Answer Rittinger’s law

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


aDry

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bWet

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cUltrafine

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dIntermediate

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View Answer Dry

In constant pressure filtration ?


aResistance decreases with time

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bRate of filtration is constant

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cRate of filtration increases with time

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dRate of filtration decreases with time

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


aDecantation

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bFlocculation

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cSedimentation

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dClassification

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View Answer Sedimentation

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