Chemical Engineering MCQs

Page No. 558

A space time of 3 hours for a flow reactor means that___________________?


aThe time required to process one reactor volume of feed (measured at specified conditions) is 3 hours


bThree reactor volumes of feed can be processed every hour


cIt takes three hours to dump the entire volume of the reactor with feed


dConversion is cent per cent after three hours



For a reaction of the type of bellow given figure, the rate of reaction (- rx) is given by___________________?


a(K1 + K1) CX


b(K1 + K2+K3) CX


cK1CV – K2CX


d(K1 – K2) CX


View Answer K1CV – K2CX

A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given: CA0= 5 kmole/m3; XA = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min-1; (ΔH) = – 40kJ/mole; ρ = 1000kg/m3 CP = 4 J/gm.°C ; q = 10-3 m3/min (ρ and CP are same for the reactant and product streams). The amount of heat to be removed is_________________?


a2/3 kW


b1 kW


c5/3 kW


d4 kW


View Answer 5/3 kW

If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship ?


at ∝ 1/an


bt ∝ 1/an – 1


ct ∝ 1/an + 1


dt ∝ an


View Answer t ∝ 1/an – 1

A reactor is generally termed as an autoclave, when it is a_____________________?


aHigh pressure batch reactor


bAtmospheric pressure tank reactor


cHigh pressure tubular reactor


dAtmospheric pressure CSTR



For an autocatalytic reactor, the suitable reactor set up is__________________?


aP.F. reactors in series


bCSTR in series


cCSTR followed by P.F. reactor


dP.F. reactor followed by CSTR



Which of the following factors control the design of a fluid-solid reactor ?


aReaction kinetics for single particle


bSize distribution of solids being treated


cFlow patterns of solids and fluid in the reactor


dAll A., B. and C.


View Answer All A., B. and C.

______________ explains the mechanism of catalysis?


aActivated complex theory


bCollision theory


cThermodynamics


dNone of these



If Thiele modulus is ________________, then the pore diffusion resistance in a catalyst may be considered as negligible?


a0


b


c< 0.5


d> 0.5


View Answer < 0.5

Rate of a chemical reaction is not influenced by the__________________?


aCatalyst


bTemperature


cReactants concentration


dNumber of molecules of reactants taking part in a reaction



Goto Page No.

Page 558 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