Chemical Engineering MCQs

Page No. 120

Addition of nickel to copper improves its_________________?


aMachinability

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bDuctility

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cStrength

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dHardness

✓


View Answer Hardness

Clock pendulums are usually made of _______________ steel?


aHigh speed

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bStainless

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cHeat resisting

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dNone of these

✓


View Answer None of these

In the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2, decrease in the pressure of the system will _____________ the degree of dissociation of PCl5?


a Increase

✓


bDecrease

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cNot alter

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dNone of these

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View Answer Increase

A chemical change takes place when iron_____________?


aRusts

✓


bMelts

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cIs heated

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dNone of these

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View Answer Rusts

The ratio of equilibrium constants (Kp2/Kp1) at two different temperatures is given by____________________?


a(R/ΔH) (1/T1 – 1/T2)

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b(ΔH/R) (1/T1 – 1/T2)

✓


c (ΔH/R) (1/T2 – 1/T1)

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d(1/R) (1/T1 – 1/T2)

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Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of__________________?


aCast iron

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bStainless steel or glass lined vessel

✓


cKarbate

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dWrought iron

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All gases during throttling process at atmospheric temperature and pressure show a cooling effect except__________________?


aCO2

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b H2

✓


c O2

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dN2

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View Answer H2

_______________ does not contain tin as an alloying material?


aBrass

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bPewter

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cSolder

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dBabbitt metal

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View Answer Brass

Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates__________________?


aUse of only one graph for all gases

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bCovering of wide range

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cEasier plotting

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dMore accurate plotting

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Cast iron is a ______________ material?


aBrittle

✓


bDuctile

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cTough

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dMalleable

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View Answer Brittle

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