Know exactly how many questions come from each chapter. Prioritise your NEET 2027 preparation using 629 real, in-syllabus Chemistry PYQs counted across 15 NEET papers (2016 to ReNEET 2026).
In the valid ReNEET 2026 (June re-exam), Chemistry rewarded concept-application backed by NCERT precision — mostly direct, NCERT-rooted questions where one misremembered line, exception or trend silently cost the mark. The chapters that carried the section were the same heavy hitters below: General Principles Of Organic Chemistry, Chemical Bonding, Aldehydes, Ketones And Carboxylic Acid.
Forward strategy for NEET 2027 & 2028: master the high-weightage chapters straight from the NCERT text — every named reaction, exception and periodic trend — then apply those concepts to fresh framings. In Chemistry, NCERT precision plus application is the whole game.
Chapters ranked by total PYQ count (2016 to ReNEET 2026). Focus on High-priority chapters first — they appear consistently and carry the most marks.
Every chapter with its total PYQ count, its share of all Chemistry questions (weightage), and the year-wise distribution across NEET 2016 to ReNEET 2026. Counts are derived directly from 629 in-syllabus PYQs.
| Chapter | Class | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | PYQs | Weightage | Priority |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| General Principles Of Organic Chemistry | 11 | 11 | 6 | 4 | 6 | 3 | 5 | 5 | 5 | 6 | 8 | 4 | 60 | 9.5% | High |
| Chemical Bonding | 11 | 13 | 6 | 5 | 9 | 3 | 6 | 4 | 6 | 4 | 2 | 6 | 54 | 8.6% | High |
| Aldehydes, Ketones And Carboxylic Acid | 12 | 5 | 3 | 4 | 4 | 3 | 5 | 3 | 10 | 3 | 3 | 6 | 49 | 7.8% | High |
| Coordination Compounds | 12 | 3 | 4 | 4 | 3 | 4 | 2 | 2 | 4 | 4 | 3 | 12 | 43 | 6.8% | High |
| Hydrocarbons | 11 | 5 | 3 | 3 | 7 | 2 | 4 | 3 | 2 | 5 | 5 | 5 | 42 | 6.7% | High |
| Haloalkanes And Haloarenes | 12 | 3 | 1 | 3 | 3 | 4 | 2 | 4 | 9 | 4 | 2 | 5 | 40 | 6.4% | High |
| Alcohols, Phenols And Ethers | 12 | 1 | 3 | 4 | 4 | 2 | 2 | 2 | 6 | 4 | 1 | 4 | 33 | 5.2% | Medium |
| D And F Block Elements | 12 | 3 | 1 | 2 | 6 | 3 | 2 | 3 | 4 | 3 | 1 | 8 | 33 | 5.2% | Medium |
| Thermodynamics | 11 | 4 | 2 | 1 | 4 | 3 | 2 | 1 | 5 | 2 | 2 | 5 | 31 | 4.9% | Medium |
| Electrochemistry | 12 | 6 | 1 | 1 | 4 | 2 | 2 | 3 | 5 | 2 | 1 | 4 | 31 | 4.9% | Medium |
| Structure Of Atom | 11 | 4 | 2 | 3 | 4 | 2 | 3 | 2 | 4 | 2 | 4 | 4 | 31 | 4.9% | Medium |
| Periodic Classification Of Properties | 11 | 2 | 2 | 6 | 2 | 2 | 2 | 2 | 5 | 3 | 2 | 4 | 30 | 4.8% | Medium |
| Chemical Kinetics | 12 | 4 | 3 | 2 | 4 | 2 | 1 | 2 | 5 | 2 | 2 | 5 | 30 | 4.8% | Low |
| Solutions | 12 | 4 | 2 | 0 | 5 | 2 | 2 | 1 | 3 | 2 | 2 | 4 | 27 | 4.3% | Low |
| Biomolecules | 12 | 7 | 2 | 2 | 4 | 3 | 2 | 1 | 4 | 2 | 2 | 4 | 26 | 4.1% | Low |
| Redox Equilibrium | 11 | 2 | 2 | 3 | 5 | 1 | 1 | 3 | 3 | 1 | 1 | 3 | 24 | 3.8% | Low |
| Amines | 12 | 3 | 2 | 1 | 2 | 1 | 1 | 1 | 3 | 2 | 3 | 4 | 23 | 3.7% | Low |
| Some Basic Concepts Of Chemistry | 11 | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 3 | 3 | 2 | 4 | 22 | 3.5% | Low |
How the 629 Chemistry PYQs split across the two NCERT years. Both years carry serious weight — you cannot skip either.
These chapters have been getting more questions in recent papers (2023 to ReNEET 2026). Give them extra attention for NEET 2027.
You know where the marks are. Drill those high-weightage Chemistry chapters with real, chapter-wise previous-year questions — free, no login.
Chemistry is the most scoreable of the three NEET subjects. It carries 45 questions worth 180 marks, and most questions sit very close to the NCERT text — so knowing which chapters actually appear, and reading those chapters with precision, converts directly into marks.
We counted 629 in-syllabus Chemistry PYQs across all 15 NEET papers (2016 to ReNEET 2026). The data is clear: chapters like General Principles Of Organic Chemistry, Chemical Bonding, Aldehydes, Ketones And Carboxylic Acid, Coordination Compounds carry the highest weightage year after year. Together, the top 6 high-priority chapters account for roughly 46% of all Chemistry questions.
What ReNEET 2026 told us. In the valid June re-exam, Chemistry rewarded concept-application and NCERT precision — direct, mostly NCERT-rooted questions where a single misremembered exception, trend or named reaction quietly cost a mark. The chapters did not change; what mattered was reading them exactly. So for NEET 2027 and 2028 the durable strategy is to master the high-weightage chapters from the NCERT text itself and then apply those concepts to fresh framings.
Phase 1: Lock the high-priority chapters from NCERT line-by-line — every named reaction, exception and periodic trend — then solve every PYQ from these chapters.
Phase 2: Cover the medium-priority chapters for breadth and speed; these convert into reliable marks once the heavy chapters are secure.
Phase 3: Revise low-priority chapters with focused NCERT-and-PYQ revision so no single factual question can surprise you.
Practise chapter-wise with NEET Chemistry PYQs, and read the exact NCERT lines behind each question in the NCERT Chemistry reader.