The polymer that is used as a substitute for wool in making commercial fibers is -
1. Melamine
2. Nylon-6, 6
3. Polyacrylonitrile
4. Buna-N
The biodegradable polymer is:
1. Buna-S
2. nylon-6, 6
3. nylon 2-nylon 6
4. nylon-6
[NH(CH2)6NHCO(CH2)4CO]n is a :
1. Co-polymer
2. Addition polymer
3. Thermo-setting polymer
4. Homopolymer
Which one of the following polymers is prepared by condensation polymerization?
1. Nylon-66
2. Teflon
3. Rubber
4. Styrene
1. In vulcanisation, the formation of sulphur bridges between different chains make rubber harder and stronger
2. Natural rubber has the trans-configuration at every double bond
3. Buna-S is a copolymer of butadiene and styrene
4. Natural rubber is a 1,4-polymer of isoprene
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1. Bakelite
2. Melamine
3. Nylon-66
4. Terylene
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Which one of the following is not a condensation polymer?
1. Melamine
2. Glyptal
3. Dacron
4. Neoprene
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