Chemical Engineering MCQs

Page No. 819

For separating small pieces of metal from engine oil of a car, the best separating technique is the _____________________ ?


aChromatography


bEvaporation


cFiltration


dFractional distillation


View Answer Filtration

Fahrenheit and Centigrade scales have the same readings at _____________________?


a-55°


b-40°


c-33°


d-58°


View Answer -40°

The substance used as a smoke screen in warfare is___________________?


aC2H2


bSiCl4


cP2O5


dPCl5


View Answer SiCl4

Increasing sulphur content in pig iron tends to make it ________________?


aSoft


bHard


cTough


dDuctile & malleable


View Answer Hard

The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the___________________?


aFinal control element


bOn-off control


cFloating control action


dNone of these


View Answer Final control element

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?


a90% tungsten carbide and 10% cobalt


b70% aluminium oxide & 30% silica


c30% nickel, 15% chromium & 55% tungsten


d65% tungsten & 35% zirconium



Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?


aWood’s metal


bBabbitt metal


cMonel metal


dDuralumin


View Answer Wood’s metal

Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?


a5


b1.25


c2.5


d3.75


View Answer 5

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of_________________?


aLumps


bPellets


cBriquettes


dSinter


View Answer Pellets

Brazing is the joining of metals_____________________?


aWithout melting the base metal


bWith a non-ferrous filler


cBoth A. & B.


dNeither A. nor (B)


View Answer Both A. & B.

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