Q. No.Which is/are true for elastomers?
1. These are synthetic polymers possessing elasticity
2. These possess very weak intermolecular forces of attractions between polymer chains
3. Vulcanised rubber is an example of elastomer
4. All of the above
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Rubber is heated with sulphur and the process is known as:
1. Galvanization.
2. Vulcanization.
3. Bessemerization.
4. Sulphonation.
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Which of the following is used to make non stick cookware ?
1. PVC
2. Polysterene
3. Polyethylene
4. PTFE
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Buna-S is a synthetic copolymer of:
1. Styrene and 1,3-butadiene
2. Styrene and ethylene
3. 1,3-Butadiene and ethylene
4. None of the above
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Gutta parcha rubber is:
1. A trans-1,4-polyisoprene polymer
2. A very hard material
3. A synthetic polymer
4. All of the above
Perspex or plexiglass is a polymer of-
1. Methyl methylacrylate
2. Methylacrylate
3. Acrylonitrile
4. None of the above
Glyptal is polymer of:
1. Ethylene glycol and phthalic acid
2. Ethylene and phthalic acid
3. Phthalic acid and acetylene
4. None of the above
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Nylon-6, 10 is a polymer of:
1. Hexamethylene and adipic acid
2. Hexamethylene and sebacic acid
3. Caprolactam
4. None of the above
The polymer containing strong intermolecular forces, e.g., hydrogen bonding is:
1. Natural rubber
2. Teflon
3. Nylon-6,6
4. Polystyrene
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