Chemical Engineering MCQs

Page No. 492

The type of stress developed in a metallic bar on subjecting it to a change in temperature without allowing it to be deformed is ______________ stress?


aShear

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bTensile

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cCompressive

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dThermal

✓


View Answer Thermal

In a continuous distillation column, the optimum reflux ratio ranges from _______________ times the minimum reflux ratio?


a1.1 to 1.5

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b1.6 to 2

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c2.2 to 2.6

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d2.7 to 3

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View Answer 1.1 to 1.5

Speed of the drum of the rotary vacuum filter normally ranges from _____________ rpm?


a0.1 to 2

✓


b5 to 7

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c3 to 8

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d8 to 15

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View Answer 0.1 to 2

Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is ___________________?


aMore

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bLess

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cSame

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dEither A. or B.; depends upon the I.D. of the pipe

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View Answer Less

In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about _______________ cms?


a10

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b20

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c30

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d35

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View Answer 10

_____________________ tray arrangement is recommended for distillation column having diameter upto 4 ft ?


aRadial flow

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bCross flow

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cSplit flow

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dCascade

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View Answer Cross flow

In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of ________________ mm?


a3-5

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b5-11

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c8-15

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d12-18

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View Answer 5-11

The ratio of shear stress to shear strain is called ____________________?


aBulk modulus

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bShear modulus

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cModulus of rigidity

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dModulus of elasticity

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View Answer Shear modulus

A stuffing box is used for____________________?


aAbsorbing the contraction/expansion of pipeline due to temperature changes

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bPrevention of fluid leakage around moving parts

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cFacilitating smooth opening and closing of a valve

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dReducing the resistance of fluid flow

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The ends of a cylindrical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure ?


aFlat plate

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bHemispherical

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cTorispherical

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dEllipsoidal

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View Answer Ellipsoidal

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