Polymer Technology MCQs

124 MCQs  — Chemical Engineering MCQs  (Page 4 of 13)

Attempt Polymer Technology Quiz
Thermocol is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten__________________?
A. Saturated polyester
B. Polyurethane
C. Polystyrene
D. Either b. or c.
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In nylon-6, the number 6 represents the total number of_________________?
A. Carbon atoms in the ring
B. Carbon atoms in the linear polymer chain
C. Nitrogen atoms in the ring
D. Hydrogen atoms in the ring
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The process involved in converting rubber into a thin sheet or coating it on fabric is called__________________?
A. Extrusion
B. Mastication
C. Calendaring
D. Vulcanisation
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Styrene butadiene rubber (SBR) is never used for making__________________?
A. Coated fabrics
B. Front wheel tyres of aeroplanes (i.e., heavy duty tyres)
C. Gaskets
D. Soles of shoes
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Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but____________________?
A. Polyacrylonitrile
B. Polyamide
C. Saturated polyester
D. Alkyd resin
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_______________ is normally used for the manufacture of refrigerator components and transistor parts?
A. Polypropylene
B. Polystyrene
C. Polyester
D. Polyurethane
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Which of the following rubbers has the widest service temperature range (-75 to 275°C) ?
A. Butyl rubber
B. Silicon rubber
C. Nitrile rubber
D. Silicone rubber
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In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of__________________?
A. Cross linked polystyrene
B. Phenol formaldehyde resins
C. Polyesters
D. Polyamides
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Nylon-66 compared to nylon-6 has __________________?
A. lower melting point
B. more abrasion resistant properties
C. higher hardness
D. all a., b. and c.
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Cross linked polymers are__________________?
A. Thermoplastic
B. Thermosetting
C. Either a. or b.
D. Fibres only
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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