Chemical Engineering MCQs

Page No. 95

The value of Joule-Thomson co-efficient, in case where cooling occurs after the throttling process is________________?


a0

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b∞

✖


c+ve

✓


d -ve

✖


View Answer +ve

Wood metal is not used for making___________________?


aSoft solder

✖


bCasting for dental work

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cStorage tank for storing brine and caustic soda

✓


dFusible safety plug for pressure cooker

✖



Nickel (76%) and chromium (15%) alloys are termed as______________________?


aInconel

✓


bMonel

✖


cAluminium bronzes

✖


dBrass

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View Answer Inconel

During Joule-Thomson expansion of gases_________________?


aEnthalpy remains constant

✓


b Entropy remains constant

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c Temperature remains constant

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dNone of these

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As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches____________________?


aZero

✖


bUnity

✓


cInfinity

✖


d An indeterminate value

✖


View Answer Unity

Babbitt metal is not a___________________________?


aTin base alloy

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bWhite metal

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cLead base alloy

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dPure metal

✓


View Answer Pure metal

If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the____________________?


aProcess must be isobaric

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b Temperature must decrease

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c Process must be adiabatic

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dBoth B. and C.

✓


View Answer Both B. and C.

The first law of thermodynamics is a statement of conservation of_____________________?


aHeat

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b Momentum

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cEnergy

✓


dWork

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View Answer Energy

Photographic plates are coated with_________________?


aSilver nitrate

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bSilver halide

✓


cCalcium silicate

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dMetallic silver

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View Answer Silver halide

First law of thermodynamics deals with the ___________________?


aDirection of energy transfer

✓


bReversible processes only

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cIrreversible processes only

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d None of these

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