Chemical Engineering MCQs

Page No. 491

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


a2.5 metres


b6 metres


c10 metres


d0.5 metre


View Answer 10 metres

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


a50-150


b5-10


c500-1500


d1500-2500


View Answer 50-150

The value of fouling factor depends upon the__________________?


aCharacteristic of process fluid


bVelocity of process fluid containing suspended solids


cSuspended solids in the fluid


dAll A., B. and C.


View Answer All A., B. and C.

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


a10


b25


c75


d300


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


b3000


c5000


d10000


View Answer 10000

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


a1


b5


c15


d25


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


b2500


c7500


d15000


View Answer 7500

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


aLayout


bPitch


cBoth A. & B.


dNeither A. nor B.


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


b30


c45


d85


View Answer 45

Reflux ratio variation in a distillation column is between___________________?


aZero and infinity


bZero and one


cMinimum and infinity


dNone of these


View Answer Minimum and infinity

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