Chemical Engineering MCQs

Page No. 587

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


aSparkler

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bPlate and frame

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cVacuum leaf

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dPre-coat

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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

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bScrew

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cDrag

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dBelt

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View Answer Flight

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


aParticle sizes

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bDensities

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cTerminal velocities

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dNone of these

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View Answer Terminal velocities

_____________ conveyors are also called scrapers?


aApron

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bScrew

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cHelical flight

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dBoth B. & C.

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View Answer Both B. & C.

Fibrous material is broken by a__________________?


aRoll-crusher

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bSquirrel-cage disintegrator

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cBall mill

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dTube mill

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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

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bEnergy needed to crush one tonne of feed to 200 microns

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

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dEnergy needed to crush one ton of feed to 100 microns

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Grindability of a material does not depend upon its_____________________?


aElasticity

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bHardness

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cToughness

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dSize

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View Answer Size

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


aPlug

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bTurbulent

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cLaminar

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dNone of these

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View Answer Laminar

A _____________ mixer resembles a ball mill without balls?


aBanbury

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bPug mill

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cTumbling

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dPan

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View Answer Tumbling

Which of the following is a coarse crusher ?


aSmooth roll crusher

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bToothed roll crusher

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cGyratory crusher

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dTube mill

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View Answer Gyratory crusher

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