Chemical Engineering MCQs

Page No. 324

_______________ is a copolymer ?


aNylon-66

✓


bPolypropylene

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cPVC

✖


dPoly tetra fluoro ethylene

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View Answer Nylon-66

Low density polythene as compared to high density polythene is____________________?


aHarder

✖


bTougher

✖


cChemically inert

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dMore flexible

✓


View Answer More flexible

Hot drink (e.g., tea) cups are usually made of _____________________?


aPolystyrene

✓


bPolythene

✖


cPolypropylene

✖


dPVC

✖


View Answer Polystyrene

The inter particle forces between linear chains in nylon-66 are ______________ bonds?


aHydrogen

✓


bCovalent

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cIonic

✖


dNone of these

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View Answer Hydrogen

Polypropylene is preferred to polythene, because the former is ____________________?


aNon-inflammable

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bHarder

✖


cStronger

✖


dBoth B. & C.

✓


View Answer Both B. & C.

Polystyrene is a light, transparent, thermoplastic material used for making __________________?


aToys and combs

✓


bPackaging bags

✖


cNon-sticking utensils

✖


dElectrical insulation

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View Answer Toys and combs

Rayon is superior to cotton in making gauge for wound treatment, because rayon_____________________?


aIs a synthetic polymer

✖


bDoes not stick to the wound unlike cotton

✓


cCan absorb over 90% of its own weight of water

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dBoth B. and C.

✖



The repeating units of PTFE are___________________?


aCl2CH-CH3

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bF2 C = CF2

✓


cF3 C-CF3

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dFClC = CF2

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View Answer F2 C = CF2

Condensation polymerisation is not involved in the manufacture of_________________?


aTeflon

✖


bPolythene

✓


cTerylene

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dNylon

✖


View Answer Polythene

Linear polymers are normally_________________?


aThermosetting

✖


bThermoplastic

✓


cElastometric

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dHaving extremely high softening point

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View Answer Thermoplastic

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