Chemical Engineering MCQs

Page No. 653

Selectivity of the solvent used in solvent extraction should be)_________________?


a1

✖


b> 1

✓


c< 1

✖


d0

✖


View Answer > 1

Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure. Nitrobenzene will distil off _______________ °C?


aAt < 100

✓


bAt > 210.6

✖


cBetween 100 and 210

✖


dNone of these

✖


View Answer At < 100

Molecular sieves are porous____________________?


aAlumina

✖


bSilica

✖


cSynthetic zeolites crystals/metal alumino-silicates

✓


dNone of these

✖



In liquid-liquid extraction, the number of phases at plait point is __________________?


a1

✓


b2

✖


c3

✖


d4

✖


View Answer 1

JD factor for mass transfer is a function of Reynolds number. Mass transfer by molecular diffusion from a single drop to surrounding still air is given by___________________?


aNsh = 2

✓


bNst = 2

✖


cNsc = 2

✖


dNone of these

✖


View Answer Nsh = 2

If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are_______________?


aStraight

✖


bParallel

✖


cBoth A. & B.

✓


dNeither A. nor B.

✖


View Answer Both A. & B.

Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid) ?


ap = P

✓


bp >>P

✖


cp < P

✖


dp << P

✖


View Answer p = P

Wetted wall tower experiment determines the__________________?


aMolal diffusivity

✖


bVolumetric co-efficient

✖


cMass transfer co-efficient

✓


dNone of these

✖



Can a cooling tower cool water below the wet bulb temperature of inlet air ?


aYes

✖


bNo

✓


cYes; but height of cooling tower will be prohibitively high

✖


dYes; but the air flow rate should be excessively high

✖


View Answer No

The rough value of diffusion co-efficient of water vapor into air at 25°C may be about ______________ cm2/sec?


a0.25

✓


b2.5

✖


c1.25

✖


d0.0025

✖


View Answer 0.25

Goto Page No.

Page 653 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