JEE Main · Chemistry · Polymers
Homopolymers vs Copolymers (Buna-S and Buna-N)
JEE Main asked Homopolymers vs Copolymers (Buna-S and Buna-N) 2 times in 2 of the 108 shifts Lumi analysed, in 2020 and 2021. It belongs to Polymers (Chemistry). The longest wait between two years asking it was 1 year.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2020
- last in 2021
- Pattern
- Gone quiet
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2020 and 2021. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.
Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Match the list is the usual form. Skill tested: recall.
- Match list on polymers and monomers
- Match polymers with monomers
Difficulty
Every question was multiple choice.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 24 Feb 2021, Shift 1 · Q48Match List I with List II. List I (Monomer Unit) List II (Polymer) (a) Caprolactum (i) Natural rubber (b) 2-Chloro-1,3-butadiene (ii)…EasyMatch the list
- 6 Sep 2020, Shift 2 · Q27The correct match between Item - I and Item - II is : Item - I / Item - II (a) Natural rubber (I) 1, 3-butadiene + styrene (b) Neoprene…EasyMatch the list
Shifts: 6 Sep 2020, Shift 2, 24 Feb 2021, Shift 1.
Same topic
Other ideas in Polymers
Polymers has 22 ideas JEE Main has asked; 12 of them came up in more than one question. The 12 most asked are below.
- Polymer Classification9× · 2023
- Neoprene Synthesis4× · 2022
- Buna-S (SBR) Monomers3× · 2023
- Common Condensation Polymers3× · 2023
- Novolac Structure and Role3× · 2022
- HDPE vs LDPE and Ziegler-Natta Catalyst2× · 2023
- Common Addition Polymers2× · 2022
- Natural and Synthetic Rubber2× · 2022
- Novolac Intermediate Formation2× · 2022
- PHBV Monomers2× · 2022
- Terylene (Dacron) Monomers2× · 2022
- Polyacrylonitrile (PAN / Orlon)once · 2023