Chemical Engineering MCQs

Page No. 188

The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vaporised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is_________________?


a0.4


b0.6


c0.8


d0.2


View Answer 0.6

Which of the following is a dimensionless parameter ?


aAngular velocity


bSpecific weight


cKinematic viscosity


dNone of these


View Answer None of these

The pump impeller and the turbine runner in a hydraulic torque converter___________________?


aHave the same diameter


bHave different diameters


cAre directly coupled


dNone of these



A sugar solution containing _________________ percent sugar is equivalent to 1 Brix?


a0.01


b0.1


c 1


d10


View Answer 1

Deformation drag, which is caused by widespread deformation of fluid around the immersed body____________________?


aOccurs when NRe is very small


bIs primarily a friction drag


cIs independent of body length


dDepends mainly on cross-sectional shape



With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the____________________?


aVelocity increases


bPressure decreases


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

pH value of a solution containing 1 gm of hydrogen ion per litre will be ____________________?


a 0


b1


c7


d10


View Answer 0

A streamline is_________________?


aThe line connecting the mid-points of flow cross-sections


bDefined for uniform flow only


cDrawn normal to the velocity vector at every point


dAlways the path of a particle



What causes convective acceleration in fluid flow ?


aSteep slope in flow


bUnsteady nature of flow


cNon-uniformity of flow


dTurbulence in flow



Each term of the Bernoulli’s equation written in the form, (p/ρ) + (g/gc). Z + (v2/2gc) = constant, represents the total energy per unit ________________?


aMass


bVolume


cSpecific weight


dNone of these


View Answer Mass

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