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

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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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