Chemical Engineering MCQs

Page No. 806

The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the_________________?


aPipe roughness & pipe diameter

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bFluid velocity

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cType of flowing fluid

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dBoth B. & C.

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View Answer Both B. & C.

Which of the following does not discharge the dust collected as a dry solid?


aElectrostatic precipitator

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bWet scrubber

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cBag filter

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dGravity settling chamber

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View Answer Wet scrubber

Hydro-cyclone is a____________________?


aCrusher

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bwet classifier

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cDry classifier

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dMagnetic separator

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View Answer wet classifier

Tin based white metals are used, where bearings are subjected to___________________?


aHigh pressure & load

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bLow pressure & load

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cHigh temperature

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dLarge surface wear

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View Answer High pressure & load

The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is ______________ BTU/hr?


a100

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b200

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c1000

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d2000

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View Answer 200

For preparation of porous bearings by powder metallurgy, preferred particle shape is___________________?


aSpherical

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bNodular

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cIrregular

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dNo preferred shape

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View Answer Spherical

_______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?


aBeryllium

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bZirconia

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cAlumina

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dMagnesia

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View Answer Alumina

Cobalt – 60 is used as a source of _____________ in medical therapy & industrial radiography?


aX-rays

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bγ-rays

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cα-rays

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dβ-rays

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View Answer γ-rays

__________________ is used for tying the steel columns to concrete foundation?


aGrouting

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bEyebolt

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cAnchor bolts

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dRefractory castables

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View Answer Anchor bolts

Alloys having more than 80% copper are generally more______________________?


aAbrasion resistant

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bCorrosion resistant

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cProne to season cracking

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dMachinable

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View Answer Corrosion resistant

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