Chemical Engineering MCQs

Page No. 136

Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of__________________?


aStainless steel or glass lined steel


bNickel clad steel


cHigh silicon cast iron


dAluminium



Among the tin containing alloys, ______________ consumes the maximum amount of tin?


aSolder


bWhite metal


cPewter metal


dBronzes


View Answer Solder

Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is__________________?


a1


b 2


c 3


d4


View Answer 2

Presence of nitrogen in steel___________________?


aMakes it brittle


bIncreases its strength


cIncreases its hardness


dIs desirable


View Answer Makes it brittle

_____________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working?


aSolid solution hardening


bScrew dislocation


cStrain ageing


dTwinning


View Answer Strain ageing

Beehive coke ovens are made of ________________ bricks?


aSilica


bFireclay


cSilicon carbide


dCorundum


View Answer Silica

Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system ?


aHigh silicon iron, silicon rubber, Kel-F and Teflon


bMild steel and stainless steel


cCast iron, tin and aluminium


dCopper, nickel and Monel



Nickel as a material of construction__________________?


aIs used as an alloying element for both ferrous & non-ferrous alloys


bIs paramagnetic below 415° C (its Curie temperature)


cDiamagnetic


dHas a body centred cubic (bcc) crystal lattice structure



For a real gas, the chemical potential is given by_____________________?


aRT d ln P


bRT d ln f


cR d ln f


d None of these


View Answer RT d ln f

Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower_________________?


aPrice


bCorrosion resistance


cThermal conductivity


dAbundant availability


View Answer Abundant availability

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