Chemical Engineering MCQs

Page No. 833

Pick out the correct combination about the role of various additives used in polymers ?


aPlasticiser: increases the polymer strength

✖


bHeat stabiliser: increases the maximum service temperature

✖


cFillers: Does not affect the property of polymer but increases its weight

✓


dLubricants: increases the flexibility of polymers

✖



In multipass welds, shot peening is done after each pass to__________________?


aClose the surface porosity

✓


bBreak the continuity of columnar grains

✖


cFlatten the weldment

✖


dIntroduce texture in the weld

✖



Shampoos are commercially not available in the form of ___________________?


aPowder

✖


bGaseous mixture

✓


cSolution

✖


dEmulsion

✖


View Answer Gaseous mixture

Which of the following is an ore dressing operation ?


aClassification

✓


bSmelting

✖


cRoasting

✖


dNone of these

✖


View Answer Classification

Material of construction of the electrode used in the electric resistance welding is___________________?


aStainless steel

✖


bGraphite

✖


cCopper

✓


dSteel

✖


View Answer Copper

Normalising does not ______________________ of a metal ?


aImprove machinability & tensile strength

✖


bRemove internal stresses

✓


cRefine the structure

✖


dRemove strains caused by cold working

✖



Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to ________________ boiling ?


aFilm

✓


bNucleate

✖


cTransition

✖


dAll modes of

✖


View Answer Film

The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at ______________ percent relative humidity ?


a0

✖


b100

✓


c50

✖


dNone of these

✖


View Answer 100

A polymer is termed as an ‘elastomer’, if its percentage elongation is more than 100%. An elastomer is termed as ‘rubber’ if its percentage elongation is more than _______________ percent ?


a150

✖


b200

✓


c300

✖


d400

✖


View Answer 200

The units of the rate constant for a second order reaction are__________________?


aSec-1. mole°

✖


bMoles1. sec-1

✖


cMoles-1. sec1

✓


dMoles1. sec1

✖


View Answer Moles-1. sec1

Goto Page No.

Page 833 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