NEET Chemistry Chapter Weightage 2026: Top 10 High-Weightage Chapters
- Swarangi Nawge
- Jan 16
- 4 min read
For any medical aspirant, Chemistry is the most scoring section of the NEET UG paper. While Biology requires memory and Physics requires logic, Chemistry is a perfect blend of both. To help you streamline your preparation, we have analyzed the NEET Chemistry Chapter Weightage 2026 based on the latest NTA trends and previous years' papers (2020–2025).
Understanding which chapters carry the most marks allows you to allocate your study hours efficiently. Below is a comprehensive breakdown of the top 10 high-weightage chapters for your 2026 medical board and entrance preparation.
NEET Chemistry Chapter Weightage 2026: Overview Table
Before diving into the details, let’s look at the distribution of questions across the three branches of Chemistry.
Chemistry Branch | Average No. of Questions | Weightage Percentage |
Inorganic Chemistry | 15–18 | 34% |
Organic Chemistry | 16–18 | 36% |
Physical Chemistry | 14–16 | 30% |
Top 10 High-Weightage Chemistry Chapters for 2026
1. Chemical Bonding and Molecular Structure
This is the "King of Inorganic Chemistry." Without mastering this, you cannot understand reactivity or shapes of molecules.
Weightage: 9%
Must-Read Topics: VSEPR Theory, Hybridization (sp, sp², sp³, sp³d, sp³d²), and Molecular Orbital Theory.
Frequent Question: Finding the bond order of O₂ or N₂ species.
2. Coordination Compounds
A consistent high-scorer in medical boards. The NTA loves asking about the color and magnetic properties of complexes.
Weightage: 7%
Must-Read Topics: IUPAC Nomenclature, Crystal Field Theory (CFT), and Isomerism.
Formula to Remember: Magnetic Moment (μ) = √[n(n + 2)] BM.
3. Equilibrium
Equilibrium is often considered the toughest part of Physical Chemistry, but it is highly rewarding.
Weightage: 6%
Must-Read Topics: Le Chatelier’s Principle, Ksp (Solubility Product), and pH of Buffer Solutions.
Tip: Focus heavily on Ionic Equilibrium as it appears more frequently in the medical entrance than Chemical Equilibrium.
4. Hydrocarbons
The foundation of Organic Chemistry. In 2026, expect more questions on the mechanisms of electrophilic substitution.
Weightage: 6%
Must-Read Topics: Ozonolysis, Wurtz Reaction, and Benzene Reactivity.
Repeated Question: Determining the major product in Markovnikov vs. Anti-Markovnikov additions.
5. Aldehydes, Ketones, and Carboxylic Acids
This is the most important chapter in Class 12 Organic Chemistry. It is "Name Reaction" heavy.
Weightage: 6%
Must-Read Topics: Aldol Condensation, Cannizzaro Reaction, and HVZ Reaction.
Expert Insight: Often integrated with other chapters in A → B → C type sequence questions.
6. Thermodynamics and Energetics
A conceptual chapter that overlaps with Physics.
Weightage: 5%
Must-Read Topics: First Law of Thermodynamics, Enthalpy of Reaction, and Gibbs Free Energy.
Critical Formula: ΔG = ΔH − TΔS
7. Chemical Kinetics
Predictable and formula-based. Perfect for students who are good at basic calculations.
Weightage: 5%
Must-Read Topics: Order of Reaction, Arrhenius Equation, and Half-life period.
8. General Organic Chemistry
While technically a "basics" chapter, its application is found in every Organic question.
Weightage: 5%
Must-Read Topics: Inductive Effect, Resonance Stability, and Hyperconjugation.
High-Yield Tip: Master the stability of Carbocations Tertiary (3°) > Secondary (2°) > Primary (1°)
9. Solutions
A relatively short chapter from Class 12 Physical Chemistry.
Weightage: 4%
Must-Read Topics: Raoult’s Law, Elevation in Boiling Point, and van't Hoff Factor (i).
10. d and f-Block Elements
Mostly memory-based. Direct questions from NCERT are very common here.
Weightage: 4%
Must-Read Topics: Lanthanoid Contraction, Properties of KMnO₄ aCnd K₂r₂O₇
Analysis of Most Repeated Chemistry Questions (2021-2025)
Based on official papers, certain concepts are "NTA Favorites." Ensure you practice these:
Bond Order: Comparing the stability of O₂⁺, O₂⁻, and O₂²⁻.
Acidic Strength: Comparing acidity of Phenol, Ethanol, and substituted Benzoic acids.
Coordination: Identifying the number of geometrical isomers in complexes.
Electrochemistry: Using the Nernst Equation:
Ecell = E°cell − (0.0591 / n) log Q
FAQ: NEET Chemistry Chapter Weightage 2026
Q1. Which chapter has the highest weightage in NEET Chemistry 2026?
Chemical Bonding and Coordination Compounds combined carry the highest weightage in the Inorganic section, while Aldehydes, Ketones, and Carboxylic Acids dominates the Organic section.
Q2. Is NCERT enough for high-weightage chapters?
For Inorganic and Organic Chemistry, NCERT is 95% sufficient. For Physical Chemistry chapters like Equilibrium and Thermodynamics, you should refer to practice books for varied numerical types.
Q3. How many questions are asked from Organic Chemistry?
Typically, 16–18 questions out of 50 are from Organic Chemistry, making it nearly 36% of the Chemistry section.
Preparation Tips for 2026 Aspirants
Create a Formula Sheet: For Physical Chemistry, write down all formulas for chapters like Solutions and Kinetics on a single page.
Reaction Maps: For Organic Chemistry, create a flow chart showing how one functional group converts into another.
NCERT Exemplar: Solve the MCQ section of the NCERT Exemplar for every high-weightage chapter.
Mock Tests: Take at least one full-length Chemistry mock test per week to improve your speed and accuracy.
Conclusion
Mastering the NEET Chemistry Chapter Weightage 2026 is the most effective way to secure a 160+ score in the Chemistry section. By prioritizing high-yield topics like Chemical Bonding, Coordination Compounds, and GOC, you ensure that the bulk of your exam paper feels familiar. Remember, success in medical boards and competitive exams is defined by consistency—focus on these top 10 chapters, solve previous year questions (PYQs) diligently, and treat NCERT as your primary guide.
CTA
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