1. | 2. | ||
3. | 4. |
I: | High density polythene is formed in the presence of catalyst triethylaluminium and titanium tetrachloride. |
II: | High density polymers are chemically inert. |
1. | Thermosetting polymers are reusable |
2. | Elastomers have polymer chains held together by weak intermolecular forces |
3. | Fibers possess high tensile strength |
4. | Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively |
Match list-I with list-II:
List-I (Monomers) |
List-II (Polymers) |
||
(a) | Caprolactam | (i) | Bakelite |
(b) | Ethylene glycol and Benzene-1, 4-dicarboxylic acid | (ii) | Nylon 6, 6 |
(c) | Hexamethylenediamine and adipic acid | (iii) | Nylon-6 |
(d) | Phenol and Formaldehyde | (iv) | Terylene |
(a) | (b) | (c) | (d) | |
1. | (ii) | (iii) | (iv) | (i) |
2. | (i) | (ii) | (iii) | (iv) |
3. | (iii) | (iv) | (ii) | (i) |
4. | (iv) | (ii) | (i) | (iii) |
Which one of the following polymers are prepared by addition polymerization?
1. Novolac
2. Dacron
3. Teflon
4. Nylon-66
The natural polymer among the following options is:
1. Poly(Butadiene-styrene)
2. Polybutadiene
3. Poly(Butadiene-acrylonitrile)
4. Cis-1,4-polyisoprene
The correct statement regarding Bakelite is :
1. It is a cross linked polymer.
2. It is an additional polymer.
3. It is a branched chain polymer.
4. It is a linear polymer.
The biodegradable polymer is:
1. Buna-S
2. Nylon-6, 6
3. Nylon 2-nylon 6
4. Nylon-6
The polymer that is used as a substitute for wool in making commercial fibres is -
1. Melamine
2. Nylon-6, 6
3. Polyacrylonitrile
4. Buna-N