Polymer Technology — Test 2
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Question 1
Thermocol is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten__________________?
Question 2
In nylon-6, the number 6 represents the total number of_________________?
Question 3
The process involved in converting rubber into a thin sheet or coating it on fabric is called__________________?
Question 4
Styrene butadiene rubber (SBR) is never used for making__________________?
Question 5
Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but____________________?
Question 6
_______________ is normally used for the manufacture of refrigerator components and transistor parts?
Question 7
Which of the following rubbers has the widest service temperature range (-75 to 275°C) ?
Question 8
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__________________?
Question 9
Nylon-66 compared to nylon-6 has __________________?
Question 10
Cross linked polymers are__________________?