Chemical Engineering MCQs

Page No. 158

What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition ?


a0.5


b0.67


c1


d2


View Answer 2

When pressure is applied on the system, ice ↔ water, then_________________?


aEquilibrium cannot be established


b More ice will be formed


cMore water will be formed


d Evaporation of water will take place



In an irreversible process________________?


aTds = dE – dW = 0


bdE – dW – Tds = 0


c Tds – dE + dW < 0


d Tds – dT + dW < 0



The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 – T2)/T1. The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T1 and T2 is given by__________________?


aT1/(T1-T2)


b T2/(T1-T2)


cT1/T2


dT2/R1


View Answer T1/(T1-T2)

An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to_________________?


a12 P1V1


b6 P1 V1


c3 P1V1


d P1 V1


View Answer 3 P1V1

The work done in an adiabatic change in a particular gas depends upon changes in the ______________ only?


aTemperature


bSpecific heat


cVolume


dPressure


View Answer Temperature

The expression, nCv(T2 – T1), is for the _____________ of an ideal gas?


aWork done under adiabatic condition


bCo-efficient of thermal expansion


cCompressibility


dNone of these



Which of the following has the minimum value of COP for a given refrigeration effect ?


aReverse Carnot cycle


bOrdinary vapour-compression cycle


c Vapour-compression process with a reversible expansion engine


dAir refrigeration cycle



Partial molar free energy of an element A in solution is same as its__________________?


aChemical potential


bActivity


cFugacity


dActivity co-efficient


View Answer Chemical potential

Entropy of the system decreases, when_______________?


aSnow melts into water


bA gas expands spontaneously from high pressure to low pressure


cWater is converted into ice


dBoth B. & C


View Answer Both B. & C

Goto Page No.

Page 158 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