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


bFluid velocity


cType of flowing fluid


dBoth B. & C.


View Answer Both B. & C.

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


aElectrostatic precipitator


bWet scrubber


cBag filter


dGravity settling chamber


View Answer Wet scrubber

Hydro-cyclone is a____________________?


aCrusher


bwet classifier


cDry classifier


dMagnetic separator


View Answer wet classifier

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


aHigh pressure & load


bLow pressure & load


cHigh temperature


dLarge surface wear


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


b200


c1000


d2000


View Answer 200

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


aSpherical


bNodular


cIrregular


dNo preferred shape


View Answer Spherical

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


aBeryllium


bZirconia


cAlumina


dMagnesia


View Answer Alumina

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


aX-rays


bγ-rays


cα-rays


dβ-rays


View Answer γ-rays

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


aGrouting


bEyebolt


cAnchor bolts


dRefractory castables


View Answer Anchor bolts

Alloys having more than 80% copper are generally more______________________?


aAbrasion resistant


bCorrosion resistant


cProne to season cracking


dMachinable


View Answer Corrosion resistant

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