Chemical Engineering MCQs

Page No. 152

For water, when the pressure increases, the viscosity_________________?


aAlso increases

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bDecreases

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cRemain constant

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dFirst decreases, and then increases

✓



Air vessel provided in a reciprocating pump is for__________________?


aIncreasing the acceleration head

✖


bMaking the friction in pipe uniform

✓


cDecreasing the acceleration head

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dNone of these

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At absolute zero temperature, the _____________ of the gas is zero?


a Pressure

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bVolume

✓


cMass

✖


dNone of these

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View Answer Volume

Joule-Thomson Co-efficient at any point on the inversion curve is___________________?


a∞

✖


b+ve

✖


c0

✓


d-ve

✖


View Answer 0

Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the ____________ head?


aManometric

✓


bTotal

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cStatic

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dFriction

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View Answer Manometric

Multistage centrifugal pumps are generally used for________________?


aHigh head

✓


bLow head but high discharge

✖


cHighly viscous liquid

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dSlurries of high solid concentration

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View Answer High head

No work is done by the system, when a reaction occurs at constant__________________?


aVolume

✓


bTemperature

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cPressure

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dNone of these

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View Answer Volume

Specific speed of a centrifugal pump depends upon the ______________ head?


aSuction

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bDelivery

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cManometric

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dNone of these

✓


View Answer None of these

If atmospheric temperature and dew point are nearly equal, then the relative humidity is_______________?


aZero

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b50%

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cAlmost 100%

✓


d unpredictable

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View Answer Almost 100%

The simple Pitot tube does not measure the________________?


aStatic pressure

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bDynamic pressure

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cVelocity at the stagnation point

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dAll A., B. and C.

✓


View Answer All A., B. and C.

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