Chemical Engineering MCQs

Page No. 79

Addition of _____________ in steel can help in increasing the depth of hardness?


aNickel

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bChromium

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cVanadium

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dTungsten

✓


View Answer Tungsten

Fermenter used in the production of penicillin by deep fermentation process is a ______________ lined steel vessel ?


aRubber

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bMonel

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cGlass

✓


dNickel

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View Answer Glass

Which of the following is an alloy of nickel and copper ?


aHastelloy

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bDuriron

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cMonel

✓


dInconel

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View Answer Monel

Which of the following is not a nickel based alloy ?


aInconel

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bHastelloys

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cNimonics

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dBabbitt metal

✓


View Answer Babbitt metal

Presence of silicon in steel_____________________?


aIs in the form of free Si

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bIndicates that steel is not deoxidised properly

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cDecreases the blow holes formation tendency in castings

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dNone of these

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‘Hypersil’ is a ______________ steel?


aHigh speed

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bSilicon

✓


cMolybdenum

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dTungsten

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View Answer Silicon

H2SO4 (< 50% concentration) is corrosive to_________________?


aAluminium, mild steel, stainless steel, concrete & tin

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bCopper, cast iron & high silicon iron (14% Si)

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cRubber (butyl and hard), silicone rubber & Teflon

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dGlass, graphite, porcelain & stoneware

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Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its___________________?


aHigh strength to weight ratio

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bLow temperature strength properties

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cIts ability to be cast, rolled, forged & stamped

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dHigh strength and corrosion & oxidation-resistance at elevated temperature

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Cast iron has____________________?


aHigh ductility

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bHigh malleability

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cVery high tensile strength

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dIts elastic limit very close to ultimate breaking strength

✓



The most commonly used resin for making reinforced plastic is___________________?


aUnsaturated polyester

✓


bPolypropylene

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cPolyurethane

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dNylon-6

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View Answer Unsaturated polyester

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