Chemical Engineering MCQs

Page No. 841

Air-petrol ratio for maximum power generation in spark ignition engine is about_____________________?


a6 : 1


b12 : 1


c18 : 1


d24 : 1


View Answer 12 : 1

Ceramic compounds as compared to metallic compounds ____________________ ?


aCrystallise faster


bResist greater tensile stress at room temperature


cHave higher melting temperature


dAre better conductor of electricity at higher temperature



Galvanic corrosion cannot be prevented by___________________?


aCathodic protection


bAnodic protection


cUsage of largest possible anodic area


dAny one of these


View Answer Anodic protection

Silicon percentage in silicon steel used for electrical equipments is about______________?


a1


b4.0


c8


d14


View Answer 4.0

Babbitt lining is used on brass/bronze bearings to increase the____________________?


aAntifriction properties


bCompressive strength


cBearing resistance


dWear resistance


View Answer Wear resistance

Window panes of aeroplanes are normally made of_____________________?


aPerspex (PMMA)


bTeflon (PTFE)


cBakelite (phenol formaldehyde)


dPolystyrene


View Answer Perspex (PMMA)

Fibre reinforced plastic (FRP) are___________________?


aMade of glass fibre and thermoplastic resins


bAnisotropic


cMade of thermosetting resin and glass fibre


dBoth ‘B’ & ‘C’



Which of the following hardness tests does not measure the indentation hardness of metals and alloys ?


aVickers hardness test


bShore scleroscope test


cBrinell hardness test


dRockwell hardness test



Which of the following approaches the ideal gas behavior most closely ?


aWet steam


bSaturated steam


cSuperheated steam


dSaturated water


View Answer Superheated steam

Gratings is associated with the measurement of____________________?


aLinear displacement


bConcavity/convexity


cSurface texture


dFlatness


View Answer Linear displacement

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