Chemical Engineering MCQs

Page No. 110

100% H2SO4 at 30°C can’t be stored in a vessel made/lined with ___________________?


aCast iron and high silicon iron


bMild steel and stainless steel


cAluminium, tin and rubber


dTeflon, glass and porcelain



Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will_________________?


a Decrease on addition of Cl2


b Increase on addition of an inert gas at constant pressure


cDecrease on increasing the pressure of the system


dNone of these


View Answer None of these

A bearing metal should not have___________________?


aEnough plasticity


bLow thermal conductivity


cLow co-efficient of friction


dHigh toughness



The expression, nRT ln(P1/P2), is for the _____________of an ideal gas?


aCompressibility


bWork done under adiabatic condition


cWork done under isothermal condition


d Co-efficient of thermal expansion



Galvanising (i.e., zinc coating) of steel sheets is done to______________________?


aPrevent its rusting by contact with corrosive atmosphere


bProtect the base metal by cathodic protection


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

Critical compressibility factor for all substances___________________?


a Are more or less constant (vary from 0.2 to 0.3)


b Vary as square of the absolute temperature


cVary as square of the absolute pressure


dNone of these



Balls in a ball mill are usually made of__________________?


aSteel


bCast iron


cStainless steel


dBronze


View Answer Steel

Entropy of an ideal gas depends upon its__________________?


aPressure


bTemperature


cBoth A. & B


dNeither A. nor B


View Answer Both A. & B

Spark plugs, ignition tubes and electrodes are made of nickel ____________ alloys?


aBeryllium


bManganese


cCopper


dIron


View Answer Manganese

Internal energy change of a system over one complete cycle in a cyclic process is__________________?


aZero


b+ve


c-ve


dDependent on the path


View Answer Zero

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