Chemical Engineering MCQs

Page No. 589

Separation of solid particles based on their densities is called_________________?


aSizing

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bSorting

✓


cClarification

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dDispersion

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View Answer Sorting

Dust laden air can be purified using a____________________?


aCyclone separator

✓


bBag filter

✖


cGravity settler

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dTubular centrifuge

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View Answer Cyclone separator

For the transportation of ultrafine particles, the equipment used is a ____________ conveyor?


aBelt

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bPneumatic

✓


cScrew

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dNone of these

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View Answer Pneumatic

Coal is finally pulverised to 200 mesh size for burning in boilers by a___________________?


aHammer crusher

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bBall mill

✓


cRoll crusher

✖


dGyratory crusher

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View Answer Ball mill

_____________ are mixed using ribbon blenders ?


aLumpy solids and low viscosity liquids

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bDry powders

✓


cHigh viscosity liquids

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dThick pastes

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View Answer Dry powders

Reduction ratio of crushers is the___________________?


aRatio of feed opening to discharge opening

✓


bRatio of discharge opening to feed opening

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cDetermining factor for minimum dia of the feed and the product

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dNone of these

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Which of the following is not a revolving/tumbling mill used for size reduction ?


aCompartment mill

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bPebble mill

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cCage mill

✓


dRod mill

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View Answer Cage mill

Tank filter (e.g., Nutsche filter) is___________________?


aA high pressure filter

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bA continuous filter

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cUsed for small scale filtration work

✓


dA leaf filter

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The process opposite to ‘dispersion’ is termed as the___________________?


aFlocculation

✓


bSedimentation

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cFiltration

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dNone of these

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View Answer Flocculation

Screen capacity is proportional to (where, S = screen aperture)____________________?


aS

✓


b1/S

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cS2

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d√S

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View Answer S

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