Chemical Engineering MCQs

Page No. 78

Corrosion resistance of steel is increased by the addition of_________________?


aPhosphorous and tungsten


bNickel and chromium


cLead and vanadium


dMolybdenum and tungsten


View Answer Nickel and chromium

Liquid ammonia is shipped in _____________ containers?


aSteel


bAluminium


cGlass


dLead lined


View Answer Glass

Zinc is highly ______________ at room temperature?


aDuctile


bResistant to atmospheric corrosion


cMalleable


dBrittle



Dielectric strength of a material is____________________?


aIts energy storage capacity


bA magnetic property


cIts capacity to resist the flow of current


dIts capacity to withstand high voltage



Monel alloy is____________________?


aThe costliest of all the alloys of nickel


bNot suitable for making kitchen utensils


cUsed for making steam valves and turbine blades as it resists steam attack at high temperature


dNot used in cast and wrought forms



Cementite is________________?


aFe3C chemically


bA compound of carbon and iron


cCharacterised by an orthorhombic crystal structure


dAll A., B. and C.


View Answer All A., B. and C.

Perspex is nothing but_____________________?


aAcrylic sheet


bAn elastomer


cAn alloy of lead and tin


dAluminium foil clad with Bakelite


View Answer Acrylic sheet

The impure iron (pig iron) that is tapped out from blast furnace contains about _____________ percent carbon?


a0.2


b2


c4


d8


View Answer 4

Presence of high phosphorous in cast iron increases its____________________?


aFluidity


bMelting point


cShrinkage


dTensile strength


View Answer Fluidity

Coke oven regenerators are made of ______________ bricks?


aFire clay


bSilica


cLow thermal conductivity


dHigh electrical conductivity


View Answer Fire clay

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