Chemical Engineering MCQs

Page No. 97

Water on heating from 1 to 4°C___________________?


a Contracts

✓


bExpands

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cHas same volume

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dMay contract or expand

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View Answer Contracts

Specify the material of construction suitable for handling concentrated HNO3 at 100°C ?


aHigh silicon iron, Kel-F and Teflon

✓


bTin and wood

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cSilicone rubber

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dStainless steel

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Which of the following alloy steels is the most suitable for making gun barrels and projectiles ?


aTungsten steel

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bMolybdenum steel

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cNickel-chrome steel

✓


dCobalt steel

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View Answer Nickel-chrome steel

In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible ______________ process?


a Isothermal

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bAdiabatic

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cIsentropic

✓


dPolytropic

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View Answer Isentropic

Heavy duty bearings are usually made of___________________?


aWhite metal

✓


bPhosphorous bronze

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cMonel

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dZinc

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View Answer White metal

The kinetic energy of gas molecule is zero at_____________________?


a0°C

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b273°C

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c100°C

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d -273°C

✓


View Answer -273°C

Pure nickel is___________________?


aFerromagnetic above its curie point (i.e., 415°C)

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bHaving h.c.p. crystal lattice

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cFerromagnetic at room temperature

✓


dNot resistant to oxidation at high temperature

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A system is said to be at equilibrium, if the entropy of the system has reached ____________ value?


aMinimum

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b Zero

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cMaximum

✓


d None of these

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View Answer Maximum

White metal is an alloy of___________________?


aLead, tin and cadmium

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bCopper, tin and zinc

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cCopper and lead

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dNone of these

✓


View Answer None of these

Fugacity is a measure of the____________________?


aEscaping tendencies of the same substance in different phases of a system

✓


bRelative volatility of a mixture of two miscible liquids

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c Behaviour of ideal gases

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d None of these

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