Polymers is a Class 12 Chemistry chapter that carries about 2.5% of the Chemistry questions in NEET. Practise it with 39 questions covering 3 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Polymers had 10 questions, about 0.8 a year. The most in one paper was 2, in AIPMT 2014.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 0 |
| NEET 2025 | 0 |
| NEET 2024 | 0 |
| NEET 2023 | 1 |
| NEET 2022 | 1 |
| NEET 2021 | 1 |
| NEET 2020 | 1 |
| NEET 2019 | 1 |
| NEET 2018 | 1 |
| NEET 2017 | 0 |
| NEET 2016 | 1 |
| Re-AIPMT 2015 | 1 |
| AIPMT 2014 | 2 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
The number average molar mass of a polymer is 28 000 g/mol, and the monomer has a molar mass of 28 g/mol. The degree of polymerisation is:
Answer: D. 1000
Why: n = M_polymer/M_monomer.
A major environmental problem with polymers such as polythene and PVC is that they are:
Answer: A. non-biodegradable, so they persist in the environment
Why: Burning them also gives toxic gases.
Which of the following is a condensation polymer?
Answer: B. Nylon-6,6
Why: Nylon-6,6 forms from hexamethylenediamine and adipic acid with loss of water — a condensation polymer. The others are addition polymers of alkene monomers.
The monomer of polyvinyl chloride (PVC) is:
Answer: C. vinyl chloride (chloroethene)
Why: CH₂=CHCl adds to itself to form PVC.
Which of the following is a biodegradable polymer?
Answer: B. PHBV
Why: PHBV, a copolymer of 3-hydroxybutanoic and 3-hydroxypentanoic acids, is degraded by micro-organisms. The others persist in the environment.
Natural rubber is chemically:
Answer: B. cis-1,4-polyisoprene
Why: Natural rubber is cis-1,4-polyisoprene. The cis arrangement prevents close packing, which is what makes it elastic; the trans isomer is gutta-percha, which is hard.
Melamine polymer is formed by the condensation of:
Answer: B. melamine and formaldehyde
Why: It is used for unbreakable crockery.
Vulcanisation of rubber with sulphur improves its strength because sulphur:
Answer: B. forms cross-links between polymer chains
Why: Sulphur creates cross-links between adjacent isoprene chains, restricting how far they can slide past one another. The rubber becomes harder and less sticky.
Polymers carries about 2.5% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 10 times, about 0.8 questions a year.
Polymers is a Class 12 Chemistry chapter in the NCERT syllabus.
NeetVictory has 39 practice questions on Polymers, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory