The example of a thermosetting polymer among the following options is:
1. | |
2. | |
3. | |
4. |
Which of the following organic compounds polymerizes to form the polyester Dacron?
1. Propylene and para
2. Benzoic acid and ethanol
3. Terephthalic acid and ethylene glycol
4. Benzoic acid and para
Nylon is an example of:
1. Polysaccharide
2. Polyamide
3. Polythene
4. Polyester
Which one of the following is not a condensation polymer?
1. Melamine
2. Glyptal
3. Dacron
4. Neoprene
The polymer that can be classified as polyster polymer is:
1. Bakelite
2. Melamine
3. Nylon-66
4. Terylene
The structure of neoprene polymer is:
1. | 2. | ||
3. | 4. |
Structures of some common polymers are given. The incorrect match is:
1. | Teflon | |
2. | Neoprene | |
3. | Terylene | |
4. | Nylon 66 |
The straight-chain polymer is formed by:
1. | Hydrolysis of followed by condensation polymerization. |
2. | Hydrolysis of followed by condensation polymerization. |
3. | Hydrolysis of by addition polymerization. |
4. | Hydrolysis of followed by condensation polymerization. |
Which one of the following statements is not true?
1. | In vulcanization, the formation of sulphur bridges between different chains makes rubber harder and stronger |
2. | The natural rubber has the trans-configuration at every double bond |
3. | Buna-S is a copolymer of butadiene and styrene |
4. | Buna-S is a copolymer of butadiene and styrene |
Which one of the following polymers is prepared by condensation polymerization?
1. Nylon-6, 6
2. Teflon
3. Rubber
4. Styrene