Chemical Engineering MCQs

Page No. 103

Melting of ice is an example of an _____________ process?


aAdiabatic


b Isothermal


cIsometric


dNone of these


View Answer Isothermal

In an ideal refrigeration cycle, the change in internal energy of the fluid is_____________?


a+ve


b-ve


c 0


dEither of the above three; depends on the nature of refrigerant



Helmholtz free energy A. is defined as____________________?


aA = H – TS


bA = E – TS


cA = H + TS


dNone of these


View Answer A = E – TS

Which of the following is not affected by temperature changes ?


aFugacity


b Activity co-efficient


cFree energy


dNone of these


View Answer None of these

Which of the following will increase the volume of a real gas by four times ?


aDoubling the absolute temperature as well as pressure of the gas


bReducing pressure to one fourth at constant temperature


cReducing temperature to one fourth at constant pressure


dReducing the temperature to half and doubling the pressure



Compressibility factor for almost all the gases are approximately same at the same__________________?


aPressure and temperature


b Reduced pressure and reduced temperature


cCritical pressure and critical temperature


dNone of these



High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?


aΔ H = 0 and ΔS = 0


bΔ H ≠ 0 and ΔS = 0


cΔ H ≠ 0 and ΔS ≠ 0


dΔ H = 0 and ΔS ≠ 0



Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a _____________ vapour?


aSuperheated


bDesuperheated


c Non-condensable


d None of these


View Answer Superheated

1st law of thermodynamics is nothing but the law of conservation of___________________?


aMomentum


bMass


cEnergy


dNone of these


View Answer Energy

The third law of thermodynamics states that the__________________?


aHeat capacity of a crystalline solid is zero at absolute zero temperature


b Heat transfer from low temperature to high temperature source is not possible without external


cGases having same reduced properties behaves similarly


d None of these



Goto Page No.

Page 103 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