Chemical Engineering MCQs

Page No. 175

With increase in the temperature, viscosity of a liquid____________________?


aIncreases

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bDecreases

✓


cRemain constant

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dMay increase or decrease; depends on the liquid

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View Answer Decreases

The continuity equation in ideal fluid flow states that__________________?


aNet rate of inflow into any small volume must be zero

✓


bEnergy is not constant along a streamline

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cEnergy is constant along a streamline

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dThere exists a velocity potential

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Capacity of a hydraulic accumulator is defined in terms of maximum_____________________?


aAmount of energy stored

✓


bFlow rate through accumulator

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cRate of falling of ram

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dVolume available in the cylinder

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(1/V) (∂V/∂T)P is the mathematical expression__________________?


aJoule-Thomson co-efficient

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b Specific heat at constant pressure (Cp)

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cco-efficient of thermal expansion

✓


dSpecific heat at constant volume (CV)

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Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in__________________?


a Increased COP

✓


b Same COP

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c Decreased COP

✖


d Increased or decreased COP; depending upon the type of refrigerant

✖


View Answer Increased COP

The temperature at which both liquid and gas phases are identical, is called the _____________ point?


aCritical

✓


b Triple

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cFreezing

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d Boiling

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View Answer Critical

If an ideal solution is formed by mixing two pure liquids in any proportion, then the ___________________ of mixing is zero?


a Enthalpy

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b Volume

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c Both A. & B.

✓


d Neither A nor B

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View Answer Both A. & B.

Entropy is a/an___________________?


aState function

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bMacroscopic property

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cExtensive property

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dNone of these

✓


View Answer None of these

Isentropic process means a constant _____________________ process ?


a Enthalpy

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bPressure

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cEntropy

✓


dNone of these

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View Answer Entropy

For an ideal solution, the value of activity co-efficient is______________________?


a 0

✖


b1

✓


c1

✖


d1

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View Answer 1

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