Chemical Engineering MCQs

Page No. 152

For water, when the pressure increases, the viscosity_________________?


aAlso increases


bDecreases


cRemain constant


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


dNone of these



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


a Pressure


bVolume


cMass


dNone of these


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


cStatic


dFriction


View Answer Manometric

Multistage centrifugal pumps are generally used for________________?


aHigh head


bLow head but high discharge


cHighly viscous liquid


dSlurries of high solid concentration


View Answer High head

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


aVolume


bTemperature


cPressure


dNone of these


View Answer Volume

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


aSuction


bDelivery


cManometric


dNone of these


View Answer None of these

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


aZero


b50%


cAlmost 100%


d unpredictable


View Answer Almost 100%

The simple Pitot tube does not measure the________________?


aStatic pressure


bDynamic pressure


cVelocity at the stagnation point


dAll A., B. and C.


View Answer All A., B. and C.

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