Chemical Engineering MCQs

Page No. 491

Which of the following lengths of heat exchanger tubes are normally not used in practice ?


a2.5 metres

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b6 metres

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c10 metres

✓


d0.5 metre

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View Answer 10 metres

The operating pressure drop range in a bag filter is about ______________ mm water gauge?


a50-150

✓


b5-10

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c500-1500

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d1500-2500

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View Answer 50-150

The value of fouling factor depends upon the__________________?


aCharacteristic of process fluid

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bVelocity of process fluid containing suspended solids

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cSuspended solids in the fluid

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dAll A., B. and C.

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View Answer All A., B. and C.

(Le/D) for fully open globe value may be around__________________?


a10

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b25

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c75

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d300

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View Answer 300

In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer coefficient (hi) vanishes after a Reynold number of_____________?


a1000

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b3000

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c5000

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d10000

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View Answer 10000

The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about ______________ kms?


a1

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b5

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c15

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d25

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View Answer 25

Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about _____________ kcal/hr.m2.°C?


a1250

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b2500

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c7500

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d15000

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View Answer 7500

In a heat exchanger, shell side fluid velocity can be changed by changing the tube _______________________?


aLayout

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bPitch

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cBoth A. & B.

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dNeither A. nor B.

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View Answer Both A. & B.

Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than ______________ kilolitres?


a20

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b30

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c45

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d85

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View Answer 45

Reflux ratio variation in a distillation column is between___________________?


aZero and infinity

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bZero and one

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cMinimum and infinity

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dNone of these

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View Answer Minimum and infinity

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