Chemical Engineering MCQs

Page No. 191

Volume of liquid displaced by a floating body is equivalent to its_________________?


aOwn weight


bSubmerged weight


cOwn volume


dSubmerged volume


View Answer Own weight

Which of the following has the smallest least effect on the solubility of a solute into the solvent ?


aNature of the solute


bNature of the solvent


cTemperature


dPressure


View Answer Pressure

Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of_________________?


aPowder & granular solids


bLiquids


cLow melting point semi-solids


dAll A, B & C


View Answer All A, B & C

Normality of a solution does not change with the increase in the __________________?


aPressure


bTemperature


cSolute concentration


dDilution of the solution


View Answer Pressure

The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its __________________?


aAbsolute viscosity


bRatio of absolute viscosity to density


cDensity


dReynolds number



The co-efficient of drag and lift for an incompressible fluid depends on the_________________?


aReynolds number


bFroude number


cMach number


dAll A., B. and C.


View Answer Reynolds number

The depression in freezing point of a solution is________________?


a Inversely proportional to the mass of solvent


bDirectly proportional to the mole of solute


c Both A. and B.


dNeither A. nor B.


View Answer Both A. and B.

The kinetic energy correction factor for velocity distribution of laminar flow is_________________?


a0.5


b1.66


c1


d2


View Answer 1.66

A centrifugal pump loses prime after starting. The reason of this trouble may be_____________________?


aIncomplete priming


bToo high a suction lift


cLow available NPSH and air leaks in the suction pipe


dAll A., B., and C.


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

At higher temperatures, molal heat capacities for most of the gases (at constant pressure) _______________ with increase in temperature?


aVaries linearly


bIncreases


c Decreases


dDoes not vary


View Answer Increases

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