Classification of polymers

39 questions on Classification of polymers from the Polymers chapter: 10 NEET level, 14 JEE Main, 15 JEE Advanced. Each one opens with its answer and solution.

• Which of the following polymer-monomer pairings is INCORRECT? JEE Main level
• Which one of the following is a semi-synthetic polymer? NEET level
• Terylene forms by esterification of ethylene glycol (HOCH2CH2OH) with terephthalic acid (benzene-1,4-dicarboxylic acid, HOOC-C6H4-COOH). Taking C = 12, H = 1, O... JEE Advanced level
• Nylon 2-nylon 6 is built from glycine (H2N-CH2-COOH) and 6-aminohexanoic acid (H2N-(CH2)5-COOH) joined alternately by amide bonds. Taking C = 12, H = 1, N = 14,... JEE Advanced level
• Polymers held together by the weakest intermolecular forces, which can be stretched and return to shape, are called NEET level
• Buna-S, polythene and nylon 6,6 are arranged in increasing order of intermolecular forces. The correct order is JEE Main level
• Assertion (A): Bakelite is a thermosetting polymer. Reason (R): Bakelite consists of linear chains held together only by weak van der Waals forces, which allow ... JEE Advanced level
• Which of the following is formed from a single kind of monomer, i.e. is a homopolymer? JEE Main level
• Which of the following are addition polymers? JEE Advanced level
• Phenol-formaldehyde resin is made in two stages, novolac and then bakelite. Which statement about novolac is correct? JEE Main level
• Which one of the following is a condensation polymer? NEET level
• The monomers of the biodegradable copolyester PHBV are JEE Main level
• Which of the following are biodegradable polymers? JEE Advanced level
• Which statement about the vulcanisation of natural rubber with sulfur is correct? JEE Main level
• The monomer of Teflon (PTFE) is NEET level
• Nylon 2-nylon 6 is best described as JEE Main level
• Select the pair in which BOTH polymers are cross-linked network polymers. JEE Advanced level
• Buna-S is a copolymer of NEET level
• Match List I (polymer) with List II (monomer or monomers). List I: P nylon 6,6; Q Buna-N; R PTFE; S bakelite. List II: 1 tetrafluoroethene; 2 phenol and methana... JEE Advanced level
• Which one of the following is a thermosetting polymer? NEET level
• Which one of the following is a natural polymer? NEET level
• The monomer of polyvinyl chloride (PVC) is NEET level
• Teflon (PTFE) is obtained by polymerising NEET level
• Neoprene is a polymer of NEET level
• Which polymer is correctly matched with its class based on intermolecular forces? JEE Main level
• Which of the following is an addition (chain-growth) polymer formed from two different monomers? JEE Main level
• Natural rubber and gutta-percha are JEE Main level
• Which statement about vulcanisation of natural rubber with sulfur is correct? JEE Main level
• Which pair correctly describes how low-density (LDPE) and high-density polyethene (HDPE) are made? JEE Main level
• In the free radical addition polymerisation of a vinyl monomer, the initiation step involves JEE Main level
• Select all the polymers that are chain-growth (addition) homopolymers. JEE Main level
• Assertion (A): Natural rubber is elastic, whereas gutta-percha, which has the same constitution (1,4-polyisoprene), is hard and non-elastic. Reason (R): The cis... JEE Advanced level
• A sample of Buna-S contains buta-1,3-diene (C4H6, 54) and styrene (C8H8, 104) residues in the mole ratio 3:1. Taking the mass of each residue equal to the monom... JEE Advanced level
• A Buna-N sample is made from acrylonitrile (CH2=CH-CN, 53) and buta-1,3-diene (C4H6, 54) and contains 8.70% nitrogen by mass (N 14). The mole ratio of acrylonit... JEE Advanced level
• Match each monomer with the chain-growth mechanism for which it is best suited. P: isobutene CH2=C(CH3)2; Q: acrylonitrile CH2=CH-CN; R: ethyl vinyl ether CH2=C... JEE Advanced level
• Consider eight polymers: PVC, Bakelite, Buna-S, Terylene, polythene, melamine-formaldehyde polymer, PMMA, nylon 6,6. How many are condensation polymers, and how... JEE Advanced level
• Select all the correct statements about natural rubber. JEE Advanced level
• Select all the correct statements about free radical polymerisation of a vinyl monomer. JEE Advanced level
• Select all the copolymers among the following. JEE Advanced level