Chemical Engineering MCQs

Page No. 189

Draining of shallow pits or sump is done by a sump pump, which is a ______________ pump?


aSingle stage vertical


bCentrifugal


cPlunger


dDiffuser


View Answer Single stage vertical

In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant ?


aRotational


bUnsteady


cTurbulent


dNon-uniform


View Answer Non-uniform

Which of the following is the „Blasius equation‟, relating friction factor to the Reynolds number ?


af = 0.079.NRe-0.25


bf-0.5 = 4.07 loge (NRef)-0.6


cBoth ‘a’ and ‘b’


dNone of these


View Answer f = 0.079.NRe-0.25

A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation ?


aInertial and drag forces are important


bDrag, gravitational and buoyancy forces are important


cDrag force and gravitational forces are important


dNone of the above



Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?


a1/9


b 8/9


c1/2


d5/9


View Answer 8/9

Isotropic turbulence occurs __________________?


aWhere there is no velocity gradient


bAt higher temperatures


cOnly in Newtonian fluids


dNone of these



Specific speed of a centrifugal pump relates it with another pump having the___________________?


aDynamic similarity


bSame efficiency


cSame speed


dGeometrical similarity


View Answer Dynamic similarity

No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules____________________?


aCollide without loss of energy


bDo work equal to loss in kinetic energy


c Are above the inversion temperature


dExert no attractive force on each other



For flow through an orifice from a reservoir, the actual velocity at the vena contracta is given by _________________?


a√(2gh)


bC.V. √(2gh)


cCd √(2gh)


dCc √(2gh)


View Answer C.V. √(2gh)

A special type of liquid transporting device is the diffuser pump, in which _____________ are minimised?


aBearing losses


bDisk friction


cShock losses


dCavitation


View Answer Shock losses

Goto Page No.

Page 189 of 843

Alphabetical MCQs Categories

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan