Chemical Engineering MCQs

Page No. 587

Gelatinous solid (which plug the septum) can be filtered by a _____________ filter?


aSparkler


bPlate and frame


cVacuum leaf


dPre-coat


View Answer Pre-coat

__________ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc?


aFlight


bScrew


cDrag


dBelt


View Answer Flight

Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their_________________?


aParticle sizes


bDensities


cTerminal velocities


dNone of these


View Answer Terminal velocities

_____________ conveyors are also called scrapers?


aApron


bScrew


cHelical flight


dBoth B. & C.


View Answer Both B. & C.

Fibrous material is broken by a__________________?


aRoll-crusher


bSquirrel-cage disintegrator


cBall mill


dTube mill



Work index is defined as the_________________?


aGross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen


bEnergy needed to crush one tonne of feed to 200 microns


cEnergy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen


dEnergy needed to crush one ton of feed to 100 microns



Grindability of a material does not depend upon its_____________________?


aElasticity


bHardness


cToughness


dSize


View Answer Size

In case of a plate and frame filter press, filtrate flow through the cake follows _______________ flow?


aPlug


bTurbulent


cLaminar


dNone of these


View Answer Laminar

A _____________ mixer resembles a ball mill without balls?


aBanbury


bPug mill


cTumbling


dPan


View Answer Tumbling

Which of the following is a coarse crusher ?


aSmooth roll crusher


bToothed roll crusher


cGyratory crusher


dTube mill


View Answer Gyratory crusher

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