Chemical Engineering MCQs

Page No. 86

Titanium metal_________________?


aExists in three allotropic forms


bCannot be welded


cIs used in oceanographic and space exploration applications


dNone of these



Graphite is corroded by_________________?


aSulphuric acid (10%)


bSea water


cHydrochloric acid


dNone of these


View Answer None of these

Creep is not exhibited at low temperature by _____________________?


aRubber


bAcrylics


cLead


dPlastics


View Answer Lead

Babbitt metal (used for making bearings) comprises of__________________?


aMainly tin (85%) and lead


bSaw dust and iron dust mixture


cZinc and aluminium


dCopper and aluminium



Which of the following exercises most powerful influence on the mechanical properties of steel ?


aManganese


bCarbon


cPhosphorous


dSilicon


View Answer Carbon

Acid proof stoneware_________________?


aHas very low strength


bCannot be heated


cIs broken by small temperature changes


dAll A., B. and C.


View Answer All A., B. and C.

Light weight metallic alloy used in aircraft industry is________________?


aAluminium


bHigh silicon (14%) iron


cDuralumin


dPhosphor bronze


View Answer Duralumin

Which one contains the least percentage of carbon ?


aWrought iron


bHigh speed steel


cCast iron


dPig iron


View Answer Wrought iron

Ceramic materials are____________________?


aOrganic in nature


bStronger in compression than in tension


cAlways amorphous in nature


dAlways bad heat conductors



Plastics are____________________?


aUsed in very high temperature applications


bNon-biodegradable


cNot suitable for drainage pipe manufacture


dAll A., B. & C.


View Answer Non-biodegradable

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