Chemical Engineering MCQs

Page No. 613

increasing the capacity of a screen _______________ the screen effectiveness?


aDecreases

✓


bIncreases

✖


cDoes not effect

✖


dNone of these

✖


View Answer Decreases

The most suitable equipment for the transportation of 200 mesh size particles is a _______________?


aBucket elevator

✖


bPneumatic conveyor

✓


cScrew conveyor

✖


dBelt conveyor

✖


View Answer Pneumatic conveyor

Vacuum is applied in _______________ zone, in case of a general type continuous rotary drum vacuum filter?


aFiltering

✖


bWashing

✖


cDrying

✖


dAll A., B. & C.

✓


View Answer All A., B. & C.

The capacity of a gyratory crusher is ______________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range.?


aSame as

✖


b2.5 times

✓


c5 times

✖


d10 times

✖


View Answer 2.5 times

Optimum ratio of operating speed to critical speed of a trommel is_____________________?


a0.33-0.45

✓


b1.33-1.45

✖


c0.5-2

✖


d1.5-2.5

✖


View Answer 0.33-0.45

Width and speed of a conveyor belt depends upon the ______________ of the material?


aLump size

✖


bBulk density

✖


cBoth A. & B.

✓


dNeither A. nor B.

✖


View Answer Both A. & B.

Soft & non-abrasive materials can be made into fines by________________________?


aAttrition

✓


bCompression

✖


cCutting

✖


dNone of these

✖


View Answer Attrition

Which is a secondary crusher for a hard & tough stone ?


a Jaw crusher

✖


bCone crusher

✓


cImpact crusher

✖


dToothed roll crusher

✖


View Answer Cone crusher

_______________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals?


aSeparation efficiency

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bSelectivity index

✓


cConcentration ratio

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dNone of these

✖


View Answer Selectivity index

Size reduction of moulding powders, waxes, resins & gums are done in a _______________ mill?


aCage

✖


bHammer

✖


cBoth A. & B.

✓


dNeither A. nor B.

✖


View Answer Both A. & B.

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