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प्रश्न
Which of the following are addition polymers?
(i) Nylon
(ii) Melamine formaldehyde resin
(iii) Orlon
(iv) Polystyrene
उत्तर
(iii) Orlon
(iv) Polystyrene
Explanation:
The addition polymers are formed by the repeated addition of monomer molecules possessing double or triple bonds, e.g., the formation of polythene from ethene and polypropylene from propane. However, the addition polymers formed by the polymerisation of a single monomeric species are known as homopolymers.
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संबंधित प्रश्न
Classify the following as addition and condensation polymers: Terylene, Bakelite, Polyvinyl chloride, Polythene.
Explain the difference between Buna-N and Buna-S
Distinguish between the terms homopolymer and copolymer and give an example of each.
Define the term polymerisation.
Write the names and structures of the monomers of the following polymers: Buna-S
Write the names and structures of the monomers of the following polymers: Dacron
Shyam went to a grocery shop to purchase some food items. The shopkeeper packed all the items in polythene bags and gave them to Shyam. But Shyam refused to accept the polythene bags and asked the shopkeeper to pack the items in paper bags. He informed the shopkeeper about the heavy penalty imposed by the government for using polythene bags. The shopkeeper promised that he would use paper bags in future in place of polythene bags.
1) Write the values (at least two) shown by Shyam.
2) Write one structural difference between low-density polyethene and high-density polyethene.
3) Why did Shyam refuse to accept the items in polythene bags?
4) What is a biodegradable polymer? Give an example.
Which of the following polymers are condensation polymers?
(i) Bakelite
(ii) Teflon
(iii) Butyl rubber
(iv) Melamine formaldehyde resin
In addition polymer monomer used is
High density polyethylene (HDPE) can be prepared from ethylene by
