Chemical Engineering MCQs

Page No. 762

A material subjected ________________ must have high resilience?


aShock loading


bVibration


cFatigue


dTension


View Answer Shock loading

A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place_________________?


aThe better insulation material should be put just next to pipe (i.e., inside)


bThe better insulating material should be put outside


cEither of the insulating material could be put on either side


dSteam temperature is considered before deciding as to which insulating material is to be put inside (i.e., just next to the pipe)



Lead is added to 60:40 brass primarily to improve_________________?


aMachinability


bCorrosion resistance


cFluidity


dStrength


View Answer Machinability

Glass reacts with___________________?


aH2SO3


bHF


cHNO3


dK2Cr2O7


View Answer HF

Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of________________?


aSteel


bGlass wood


cCopper


dFireclay bricks


View Answer Glass wood

Which one can be directly solidified from gaseous state without entering into liquid state ?


aHelium


bOxygen


cCarbon dioxide


dNone of these


View Answer Carbon dioxide

Cold heading or upsetting is categorised as the ________________ process ?


aExtrusion


bBending


cRolling


dForging


View Answer Forging

The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm.mole, its fugacity at 300 K would be________________?


a3171Pa


b3567Pa


c1.01 × 105Pa


d5000Pa


View Answer 3567Pa

The most abundant metal present in the earth’s crust is__________________?


aIron


bCopper


cTitanium


dAluminium


View Answer Aluminium

A material being tested for endurance strength is subjected to the _______________ load ?


aImpact


bCompletely reversed


cDynamic


dStatic & dynamic


View Answer Completely reversed

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