Chemical Engineering MCQs

Page No. 480

Hoop (circumferential) stress induced in a thin walled ‘Horton Sphere’ used for the storage of liquid ammonia under pressure is____________________?


apD/2T


bpD/4T


cpD/3T


dpD/6T


View Answer pD/2T

In case of 1.5″ heat exchanger tubes, the inside flow area _____________ with decrease in BWG?


aIncreases


bDecreases


cRemains same


dNone of these


View Answer Decreases

Hole diameter of the sieve trays in the distillation column ranges from ______________ mm?


a1 to 3


b4 to 8


c3 to 12.5


d12.5 to 18.5


View Answer 3 to 12.5

Pick out the wrong statement pertaining to the design of the distillation column?


aGenerally, a skirt clearance of 0.5″ to 1.5′ is recommended to prevent plugging of the slots by residue build up


b The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles


cIf sufficient slot area is not provided, the gas may pass through the skirt clearance


dNone of these


View Answer None of these

The force due to wind load acting on a tall vessel depends upon its___________________?


aShape


bOutside diameter


cHeight


dAll A, B. & C.


View Answer All A, B. & C.

Brass valves are usually made for pipe sizes ______________ inches?


a≤ 1


b≤ 2


c> 2.5


d> 3.5


View Answer ≤ 2

The normal range of velocity of water in pipes is _______________ m/sec?


a0.1-0.5


b1-2


c10-50


d15-30


View Answer 1-2

What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers ?


a6.5 cms


b6.5 mm


cEqual to tube I.D


dEqual to tube O.D


View Answer 6.5 mm

Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger ?


aThe corrosive and fouling fluid should be preferably routed through the tubes


bThe viscous fluid should be routed through the shell side


cLower flow rate fluid should be routed through the shell side


dHigher pressure fluid stream should be routed through the shell side



Rate of filtrate delivery is inversely proportional to the___________________?


aFiltering area & the pressure difference driving force


bViscosity of filtrate


cCake & filter medium resistance


dBoth A. and B.


View Answer Both A. and B.

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