Chemical Engineering MCQs

Page No. 96

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?


a Less

✓


b More

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cSame

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dDependent on climatic conditions

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View Answer Less

Presence of 0.3 to 0.5% arsenic in copper increases its____________________?


aDuctility

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bMalleability

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cTenacity & hardness

✓


dElectrical conductivity

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View Answer Tenacity & hardness

For a spontaneous process, free energy__________________?


aIs zero

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b Increases

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cDecreases whereas the entropy increases

✓


dAnd entropy both decrease

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Acetylene gas holder is made of__________________?


aCopper

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bCast iron

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cSteel

✓


dMonel metal

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View Answer Steel

For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the _______________ of each component must be same in all phases?


a Chemical potential

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bFugacity

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cBoth A. and B

✓


d Neither A. nor B

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View Answer Both A. and B

Babbitt metals used for making bearings are _________________?


aTin or lead based alloys

✓


bShort of antifrictional properties

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cHaving homogenous microstructure

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dYellow metals

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Carbon percentage is the same in cast iron and_________________?


aWrought iron

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bPig iron

✓


cMild steel

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dHigh silicon (14%) iron

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View Answer Pig iron

The chemical potential of any constituent of an ideal solution depends on the ______________ of the solution?


aTemperature

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bPressure

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cComposition

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dAll (A), B. and (C)

✓


View Answer All (A), B. and (C)

Nickel (56%) and molybdenum (17%) alloys are called________________?


aMonel

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bHastelloy C

✓


cInconel

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dBronzes

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View Answer Hastelloy C

In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents a reversible ____________ process?


a Isometric

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bPolytropic

✓


c Isentropic

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dIsobaric

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View Answer Polytropic

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