Get insights from 155 questions on Polymers, answered by students, alumni, and experts. You may also ask and answer any question you like about Polymers
155
Questions
0
Discussions
1
Active Users
0
Followers
Have a question about Polymers? Ask our experts
Ask Your Question
Keep it short & simple. Type complete word. Avoid abusive language.
This is a multiple choice answer as classified in NCERT Exemplar
Option (A) and (D)
Explanation: Thermoplastic polymers are linear or slight branched-chain polymers. This type of polymer softens on heating and hardens on cooling. For example, Teflon and polystyrene are thermoplastic polymers.
This is a multiple choice answer as classified in NCERT Exemplar
Option (A) and (C)
Explanation: Thermosetting polymers are cross linked polymers. These polymers on heating undergo cross linking in moulds. They become infusible on heating so cannot be reused again.
This is a multiple choice answer as classified in NCERT Exemplar
Option (B) and (C)
Explanation: Buna-S and neoprene are the polymers that needs at least one diene monomeric unit. Buna- S is a polymer formed from the polymerization of 1,3-butadiene and styrene. While, Neoprene is formed by the po
This is a multiple choice answer as classified in NCERT Exemplar
Option (D)
Explanation: The given structure is caprolactam. Nylon-6 is prepared from the monomer caprolactam. It is obtained by heating caprolactam with water at a high temperature.
This is a multiple choice answer as classified in NCERT Exemplar
Option (B)
Explanation: Low-density polythene is obtained from the polymerization of ethane under high pressure and temperature. Low-density polyethylene is tough, a poor conductor of electricity and has a highly branched structure.
This is a multiple choice answer as classified in NCERT Exemplar
Option (A)
Explanation: Dacron or Terylene is formed by the condensation polymerization of ethylene glycol and phthalic acid with the elimination of water molecules. The structure of Terylene is,
This is a multiple choice answer as classified in NCERT Exemplar
Option (C)
Explanation: PHBV (Poly beta-hydroxybutyrate co-beta-hydroxy valerate) is a biodegradable polymer. It undergoes bacterial degradation in the environment. The structure is shown as,
This is a multiple choice answer as classified in NCERT Exemplar
Option (A)
Explanation: Semi-synthetic polymers are obtained from natural polymers. Cellulose derivatives like cellulose nitrate, cellulose acetate rubber are examples of semi-synthetic polymers.
Upvote 
