Chemical Engineering MCQs

Page No. 814

With increase in steam pressure, its specific volume decreases ____________________?


aRapidly first and then slowly

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bLinearly

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cSlowly first and then rapidly

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dExponentially

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Powder metallurgy process does not make metal powder by_________________________?


aAtomisation

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bGrinding/milling

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cHammering

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dElectrolytic deposition

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View Answer Hammering

Vernier calipers cannot be used to measure the______________________?


aI.D. & O.D. of the shaft

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bThickness of parts

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cDepth of holes

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dClearance between two mating surfaces

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What is the value of entropy at 273°K ?


a0

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b1

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c∞

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dNone of these

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View Answer 0

The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding _______________ grinding wheel is normally used ?


aHard

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bSoft

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cSilicon carbide

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dSilicon carbide

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View Answer Silicon carbide

Stainless steel is welded with difficulty because of____________________?


aIts high melting temperature

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bChances of cracking

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cOxide film formation

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dChromium carbide formation

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View Answer Oxide film formation

_____________________ of grey cast iron produces white cast iron?


aTempering

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bRapid heating

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cRapid cooling

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dSlow cooling

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View Answer Rapid heating

Sudden fall of atmospheric pressure by a large amount is an indication of the_____________________?


aRain

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bCold wave

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cStorm

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dFair weather

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View Answer Storm

Which of the following is not a charge material for cupola ?


aLimestone

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bIron scrap

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cIron ore

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dPig iron

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View Answer Iron ore

Transformation range for ferrous material is the temperature interval during which ___________________ is formed during its heating?


aCementite

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bAustenite

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cMartensite

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dPearlite

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View Answer Austenite

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