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Chemical Engineering - Polymer Technology

Exercise : Polymer Technology - Section 3
36.
Silicone resins, which are highly water repellant and has good heat resistance can not be used
as room temperature adhesive.
as grease & lubricant.
hydraulic fluid for heat transfer.
resin for lamination.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Pick out the wrong statement.
Addition polymers are generally formed by chain growth polymerisation.
Condensation polymers are generally formed by step growth polymerisation.
Teflon is formed by step growth polymerisation.
Bakelite is formed by step growth polymerisation.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Which of the following rubbers has the widest service temperature range (-75 to 275°C) ?
Butyl rubber
Silicon rubber
Nitrile rubber
Silicone rubber
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Nylon-66 compared to nylon-6 has
lower melting point.
more abrasion resistant properties.
higher hardness.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres.
improving the stretchability
dyeing/colouring
detergent solution washing
glycol soaking
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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