Chemical Engineering MCQs

Page No. 117

Metalloid is__________________?


aHighly electronegative in nature


bAn element which exhibits the properties of both metal & non-metal


cAn alloy


dAll A., B. and C.



The ability of a material to offer resistance to scratching or indentation is a measure of its_________________?


aBrittleness


bToughness


cHardness


dResilience


View Answer Hardness

In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of _______________?


aConcrete


bWood


cSteel


dPorcelain


View Answer Steel

A magnetic material becomes ____________ above the Curie temperature?


aFerromagnetic


bDiamagnetic


cParamagnetic


dNone of these


View Answer Paramagnetic

Common house hold glass (i.e., soda-lime glass) is a/an _____________ material?


aFully crystalline


bPartly crystalline


cAmorphous


dNone of these


View Answer Partly crystalline

Carbon content in plain carbon steel is ______________ percent?


a0.1 to 0.15


b0.35 to 0.45


c0.65 to 0.80


d0.85 to 1.2


View Answer 0.35 to 0.45

For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is__________________?


aStainless steel


bCast iron


cAluminium


dNickel


View Answer Cast iron

Coke oven walls are lined with _____________ bricks?


aSilica


bTar-dolomite


cLow thermal conductivity


dFire clay


View Answer Silica

Pick out the wrong statement?


aMetal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure


bMetal/alloys having body centred cubic (bcc) crystal lattice structure is stronger & less ductile than those having face centred cubic (fcc) crystal lattice structure


cTungsten has a body centred cubic (bcc) crystal lattice structure


dBoth ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure



Metal at the top of the electromotive series is________________?


aLeast active


bMost stable


cMost active


dMost noble


View Answer Most active

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