Chemistry is one of the highest-scoring subjects in JEE Main 2025. It has a 22.5% weightage in the whole JEE Main 2025 syllabus. JEE Main 2025 Chemistry syllabus comprises Organic, Inorganic, and Physical Chemistry. Due to syllabus reduction last year, some changes in weightage have been observed. Some low-weightage chapters became high-weightage chapters while some high-weightage chapters became low-weightage. For instance, Inorganic Chemistry has become one of the most high-weightage sections since the syllabus reduction. Hence candidates should be familiar with the Scoring Topics in Chemistry for JEE Mains 2025. Here a detailed discussion of the scoring chapters from the chemistry syllabus in JEE Mains 2025 will be provided.
JEE Main 2025 Chemistry Syllabus: Chapter-Wise Weightage
Before diving into specific topics, it’s important to look at the weightage of some of the most important chapters in JEE Main Chemistry:
| Chapter Name | Weightage (%) |
|---|---|
| Some Basic Principles of Organic Chemistry | 9.50% |
| Redox Reaction and Electrochemistry | 7.50% |
| Chemical Bonding and Molecular Structure | 7.33% |
| Organic Compounds Containing Oxygen | 7.33% |
| Hydrocarbons | 7.00% |
| Coordination Compounds | 6.50% |
| Atomic Structure | 5.33% |
| p-Block Elements | 5.00% |
Most Scoring Topics in Physical Chemistry
Physical Chemistry involves numerical problem-solving and conceptual clarity. Most high-scoring topics are discussed below:
- Atomic Structure
- Radius, velocity, and energy of nth Bohr orbital
- Quantum numbers and their significance
- Photoelectric effect and de Broglie wavelength
- Radial and planar nodes
- Line spectrum of hydrogen
- Chemical Kinetics
- First-order reaction and half-life calculation
- Effect of temperature on reaction rate
- Arrhenius equation
- Equilibrium
- Solubility product (Ksp) and its applications
- pH calculations of solutions and mixtures
- Relationship between Kp and Kc
- Le Chatelier’s principle and its applications
- Redox Reaction and Electrochemistry
- Balancing redox reactions using the oxidation number method
- Nernst equation and its applications
- Gibbs's free energy and spontaneity of a reaction
- Faraday’s laws of electrolysis
- Solutions
- Colligative properties: elevation in boiling point, depression in freezing point
- Van’t Hoff factor and its applications
- Osmotic pressure and Henry’s law
- Some Basic Concepts in Chemistry
- Mole concept and molar mass calculations
- Stoichiometric calculations and limiting reagents
- Law of equivalence and percentage composition
Most Scoring Topics in Organic Chemistry
Organic Chemistry requires an understanding of reaction mechanisms and functional group transformations. The following topics are crucial:
- Biomolecules
- Structure and properties of disaccharides and polysaccharides
- Amino acids and protein structures
- Hydrocarbons
- Aromaticity and its significance
- Markovnikov’s and Anti-Markovnikov’s rules
- Friedel-Crafts alkylation and acylation reactions
- Organic Compounds Containing Halogens
- SN1 and SN2 mechanisms
- Factors affecting nucleophilic substitution reactions
- Organic Compounds Containing Nitrogen
- Hoffmann bromamide reaction
- Azo-coupling reaction
- Basicity of aromatic and aliphatic amines
- Organic Compounds Containing Oxygen
- Reduction and oxidation reactions
- Grignard reagent reactions
- Acidity of carboxylic acids
- Haloform reaction
- Principles of Practical Organic Chemistry
- Wet tests for cation identification
- Purification and characterization techniques like chromatography
Most Scoring Topics in Inorganic Chemistry
Inorganic Chemistry is largely theory-based, making it easier to score well with proper revision.
- Chemical Bonding and Molecular Structure
- Hybridization and molecular shapes
- Molecular orbital theory and energy level diagrams
- VSEPR theory applications
- Classification of Elements and Periodicity
- Ionization enthalpy and its periodic trends
- Atomic and ionic radii variations
- Coordination Compounds
- Crystal Field Theory (CFT) and its Applications
- Magnetic moment calculations
- Stereoisomerism in coordination compounds
- d- and f-Block Elements
- Oxidation states and electronic configurations
- Chemical properties of lanthanides and actinides
- Properties and reactions of KMnO4 and K2Cr2O7
How to Secure 70 Marks Through 10 Chapters in JEE Main 2025 Chemistry?
To help JEE Main 2025 aspirants our subject matter experts have filtered out some easy but scoring topics to perform better in the exam.
3 Important Chapters from Inorganic Chemistry
- Chemical Bonding
- Coordination Chemistry
- D&F Block Elements
To understand the importance of these chapters, the data on the distribution of questions and marks from previous years has been presented in tabular format:
| Topic | 2023 | 2024 |
|---|---|---|
| Coordination Chemistry | 53 | 41 |
| Periodic Properties | 15 | 24 |
| Chemical Bonding | 35 | 48 |
| P Block | 12+27 | 11+11 |
| D and F Block | 26 | 45 |
| Qualitative Analysis | 4 | 16 |
5 Important Chapters from Physical Chemistry
Physical Chemistry on the other hand is quite time-consuming. Besides that all the chapters in physical chemistry are interrelated. So scoring high in physical chemistry is only possible if the concepts are clear.
- Structure of Atom
- Redox Reaction
- Electro Chemistry
- Thermodynamics
- Dilute Solution
To understand the importance of these chapters, the data on the distribution of questions and marks from previous years has been presented in tabular format:
| Topic | 2023 | 2024 |
|---|---|---|
| Mole Concept | 20 | 17 |
| Structure of Atom | 29 | 28 |
| Thermodynamics and Thermochemistry | 30 | 23 |
| Chemical and Ionic Equilibrium | 11+16 | 10+9 |
| Redox Reactions and Electrochemistry | 38 | 44 |
| Dilute Solution | 31 | 24 |
| Chemical Kinetics | 25 | 19 |
2 Important Chapters from Organic Chemistry
Last year from GOC and Hydrocarbons around 113 questions came. So in organic chemistry, these two chapters hold the maximum weightage. Here are the previous year's data that candidates can refer to understand the importance of these chapters.
| Topic | 2023 | 2024 |
|---|---|---|
| General Organic Chemistry | 41 | 85 |
| Hydrocarbons | 22 | 28 |
| Haloalkanes and Haloarenes | 20 | 22 |
| Alcohol, Phenol, and Ethers | 25 | 22 |
| Aldehydes, Ketones, and Carboxylic Acids | 20 | 20 |
| Amines | 25 | 22 |
| Biomolecules | 21 | 22 |
JEE Main 2025 Chemistry Syllabus: Why Focus on High-Scoring Topics?
Understanding the significance of focusing on scoring topics is important for effective preparation. Here’s the reason
- Higher Weightage: From the chart above one can easily notice that scoring topics are very frequent in JEE Main exam.
- Conceptual Clarity: These topics form the foundation of Chemistry. It also help in solving complex problems.
- Time Efficiency: Prioritising these topics helps with better time management.
- Stronger Fundamentals: Mastering these topics helps in advanced studies and competitive exams beyond JEE.
JEE Main 2025 Chemistry Preparation Tips
- Create Shortcuts for Concept Building: Make summary notes, flowcharts, and mnemonics to remember key reactions and principles.
- Revise Regularly: Consistent revision is very important to perform better. Prioritize high-weightage topics.
- Solve Previous Year Questions: Analyzing past years’ JEE papers helps identify important patterns and question trends.
- Attempt Mock Tests: Regular mock tests improve time management, accuracy, and confidence.
- Refer to Standard Books: Apart from NCERT, refer to books like:
- Organic Chemistry: Morrison & Boyd, MS Chauhan
- Physical Chemistry: P. Bahadur, RC Mukherjee
- Inorganic Chemistry: JD Lee, VK Jaiswal
JEE Main Chemistry is a scoring subject when approached strategically. By focusing on high-weightage topics, building key concepts, and practicing well, candidates can improve their JEE Main 2025 rank.
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