Chemical Engineering MCQs

Page No. 335

The generic chemical name for the class of polymers which are commercially known as nylons is______________________?


aPolyolefins

✖


bPolyamide

✓


cPolyacrylate

✖


dPolyurethane

✖


View Answer Polyamide

Phthalic anhydride is used___________________?


aIn making PVC

✖


bAs plasticisers

✓


cIn insecticides manufacture

✖


dFor making nylon-6

✖


View Answer As plasticisers

The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is____________________?


aPolyvinyl alcohol

✖


bPolyvinyl acetate

✖


cPolyvinyl butyral

✓


dPVC

✖


View Answer Polyvinyl butyral

Polycaprolactam is also known as _________________?


aNylon-66

✖


bNylon-6

✓


cTeflon

✖


dSBR

✖


View Answer Nylon-6

Melt spinning of polymers involves the forcing of polymer melt through spinnerates (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the _____________ fibres?


aAcrylic

✓


bPolyester

✖


cNylon 6:6

✖


dPolypropylene

✖


View Answer Acrylic

Flexible foam (for mattresses) are usually made of _________________?


aPVC

✖


bSilicone rubber

✖


cPolyurethanes

✓


dPolyamides

✖


View Answer Polyurethanes

Which of the following is not a natural polymer ?


aNucleic acids e.g. RNA and DNA

✖


bPolysaccharides

✖


cPolyisoprene

✖


dPolyurethane

✓


View Answer Polyurethane

Which of the following is a natural polyamide fiber?


aWool

✓


bSilk

✖


cCotton

✖


dNone of these

✖


View Answer Wool

Synthetic rubber___________________?


aDeforms, if stretched to double of its original dimension

✖


bIs brittle at low temperature

✖


cIs softer at higher temperature

✖


dIs highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

✓



_______________ is a natural fiber?


aCellulose

✓


bDacron

✖


cNylon-6

✖


dNone of these

✖


View Answer Cellulose

Goto Page No.

Page 335 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