Chemical Engineering MCQs

Page No. 131

Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?


aCast iron


bSteel


cNickel


dKarbate


View Answer Nickel

PVγ = Constant (where, γ = Cp/Cv) is valid for a/an ______________ process?


aIsothermal


b Isentropic


c Isobaric


dAdiabatic


View Answer Adiabatic

Iron alloyed with carbon upto 2% is called___________________?


aPig iron


bWrought iron


cHigh carbon steel


dNone of these


View Answer None of these

Mild steel is a/an ______________ steel?


aLow carbon


bMedium carbon


cHigh carbon


dHigh alloy


View Answer Low carbon

The expression for entropy change given by, ΔS = – nR ln (P2/P1), holds good for___________________?


a Expansion of a real gas


b Reversible isothermal volume change


cHeating of an ideal gas


dCooling of a real gas



Amount of energy that a material can absorb before its fracture is a measure of its _________________?


aToughness


bResilience


cMalleability


dDuctility


View Answer Toughness

Visco-elastic behaviour of materials which is time dependent is common in______________?


aPlastics


bCrystalline solid


cNon-crystalline solids


dNon-crystalline organic polymer



dW and dq are not the exact differential, because q and W are__________________?


aState functions


b Path functions


cIntensive properties


dExtensive properties


View Answer Path functions

Steel balls for ball bearings are generally made of ______________ steel?


aCast


bStainless


cFree carbon


dCarbon chrome


View Answer Carbon chrome

The damage/deterioration of metals by the ______________ action of fluids is called ‘erosion’?


aAbrasive


bCorrosive


cBoth A. & B.


dNeither A. nor B.


View Answer Abrasive

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