Chemical Engineering MCQs

Page No. 550

With increase in temperature, the equilibrium _______________ rises in case of endothermic reaction?


aConstant


bConversion


cBoth A. & B.


dNeither A. nor B.


View Answer Conversion

What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on ?


aLitre/mole.second


bMoles/litre.second


cLitre/mole


dLitre/second


View Answer Litre/mole.second

Which of the following is an autocatalytic reaction ?


aPhotochemical reactions


bMicrobial fermentation reaction


cEnzyme fermentation reaction


dAmmonia synthesis reaction



An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will ______________ with decrease in space time?


aIncrease


bIncrease exponentially


cDecrease


dRemain unchanged


View Answer Decrease

During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an endothermic reaction. The yield of SO3 will be maximised, if the _____________________?


aTemperature is increased


bPressure is reduced


cTemperature is increased and pressure is reduced


dTemperature is reduced and pressure is increased



From Arrhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is___________________?


ak cal


bk cal/°K


c°K


dk cal. °K


View Answer °K

Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is rR/rS = (k1/k2). CA a-b ?


aUse high pressure and eliminate inerts, when a > b


bAvoid recycle, when a > b


cUse batch reactor or plug flow reactor, when a > b


dUse CSTR with a high conversion, when a > b



Design of heterogamous catalytic reactor involves consideration of _______________ steps?


aOnly chemical


bOnly physical


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

Holding time for flow reactors is _______________ the space time, for constant fluid density ?


aDouble


bTriple


cEqual to


dNone of these


View Answer Equal to

The reactions of high molecularity are rare, because________________?


aOf very large activation energy of many bodies


bOf low probability of many body collisions


cMany body collisions are not favoured energetically


dOf requirement of very large concentration for such reactions



Goto Page No.

Page 550 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