Chemical Engineering MCQs

Page No. 824

Bad odour in sanitary latrines is reduced by periodically sprinkling_____________________?


aBleaching powder


bLime powder


cAluminium sulphate


dNone of these


View Answer Lime powder

_______________ test determines the yield strength, Young’s modulus of elasticity, percentage reduction in area & percentage elongation of a material ?


aTensile


bFatigue


cImpact


dNone of these


View Answer Tensile

Material of construction of foundry crucible is _________________?


aLead


bStainless steel


cGraphite


dCast iron


View Answer Graphite

To counteract the bad effects of strain hardening on a cold formed part, it must be ______________________?


aTempered


bNormalised


cAnnealed


dHardened


View Answer Annealed

The thermodynamic law, PVy = constant, is not followed by the __________________?


aFree expansion of an ideal gas


bAdiabatic expansion of steam in turbine


cAdiabatic compression of air


dIdeal compression of air



Liquid nitrogen containers can be made from ___________________?


aFerritic stainless steel


bHSLA steel


cTitanium


dAustenitic stainless steel


View Answer HSLA steel

When the wavelength of incident X-rays increases, the angle of diffraction__________________?


aDecreases


bIncreases


cRemain constant


dShows no systematic variation


View Answer Decreases

________________ property of steel increases by addition of large amount of silicon in it?


aMechanical


bMachining


cMagnetic


dRefractory


View Answer Magnetic

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is__________________?


aMore


bLess


cEqual


dMuch more


View Answer Equal

At the point of boundary layer separation in fluid flow, the _____________________?


aShear stress is maximum


bVelocity gradient is flat


cDensity variation is maximum


dShear stress is zero



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