Chemical Engineering MCQs

Page No. 577

In the hydrodealkylation of toluene to benzene, the following reactions occur: C7H8 + H2 → C6H6 + CH4 2C6H6 ⇌ C12H10 + H2 Toluene and hydrogen are fed to a reactor in a molar ratio 1:5.80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is_______________________?


a0.16


b0.144


c0.152


d0.136


View Answer 0.144

Vegetable oils are hydrogenated in a _______________ reactor?


aSlurry


bPlug flow


cHomogeneous catalytic


dNone of these


View Answer Slurry

B.E.T. method of finding out surface area of a catalyst, uses the extension of _________________ isotherm?


aLangmuir


bFreundlich


cTempkin


dNone of these


View Answer Langmuir

Half life period of a chemical reaction is proportional to CA0 -1, if the reaction is of _______________ order?


aFirst


bZero


cSecond


dThird


View Answer Second

‘n’ number of plug flow reactors (P.F.R) in series with a total volume ‘V’ gives the same conversion as one P.F.R. of volume________________?


aV/n


bV


cV.n


d1/V


View Answer V

The concentration of A in a first order reaction, A → B, decreases_____________________?


aLinearly with time


bExponentially with time


cVery abruptly towards the end of the reaction


dLogarithmically with time



Time required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about _______________ minutes?


a3


b4


c6


d10


View Answer 4

A first order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by__________________?


aDiffusion within the pellet


bReaction


cExternal mass transfer


dNone of the above



The use of space time is preferred over the mean residence time in the design of a/an____________________?


aBatch reactor


bIdeal tubular-flow reactor


cSlurry reactor


dCSTR



For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of ?


aIdeal plug flow


bBypass


cDead zone


dChannelling


View Answer Dead zone

Goto Page No.

Page 577 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