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

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bSpecific weight

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cKinematic viscosity

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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

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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

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cDrawn normal to the velocity vector at every point

✓


dAlways the path of a particle

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What causes convective acceleration in fluid flow ?


aSteep slope in flow

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bUnsteady nature of flow

✖


cNon-uniformity of flow

✓


dTurbulence in flow

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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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