Chemical Engineering MCQs

Page No. 340

Buna-S is also known as_________________?


aTeflon

✖


bPTFE

✖


cSBR

✓


dPolycrylates

✖


View Answer SBR

Synthetic polymer produced by using terephthalic acid and ethylene glycol is _________________?


aTerylene

✓


bNylon-66

✖


cPVC

✖


dPolystyrene

✖


View Answer Terylene

Which of the following polymers has the tendency of decomposing before melting ?


aPolystyrene

✖


bNylon

✖


cPVC

✓


dNone of these

✖


View Answer PVC

Which of the following polymers is used for making a non stick coating on frying pans ?


aBakelite

✖


bTeflon

✓


cPerspex

✖


dPVC

✖


View Answer Teflon

The organic acid monomer in nylon-66 is __________________?


aSebacic acid

✖


bTerephthalic acid

✖


cAdipic acid

✓


dBenzoic acid

✖


View Answer Adipic acid

Non sulphonated hard bakelites are not used for making _______________________?


aIon-exchange resins

✓


bFountain pen barrels

✖


cFormica table tops

✖


dCombs

✖


View Answer Ion-exchange resins

Density of high density polythene is about __________ gm/c.c ?


a1.18

✖


b1.05

✖


c0.95

✓


d0.99

✖


View Answer 0.95

Bakelite is a/an ______________________?


aAddition polymer

✖


bElastomer

✖


cThermoplastic

✖


dNone of these

✓


View Answer None of these

Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of _______________ percent?


a1-1000

✓


b1000-1500

✖


c1500-2000

✖


d2000-2500

✖


View Answer 1-1000

Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by _______________, which decompose to give free radicals?


aOrganic peroxides

✓


bSulphuric acid

✖


cHydrofluoric acid

✖


dNone of these

✖


View Answer Organic peroxides

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