Quick answer: In Class 11 Science, the biggest units are Mechanics in Physics (Units 1–3, 23 of 70), Organic Chemistry basics and Hydrocarbons (21 of 70), Algebra in Maths (25 of 80) and Human Physiology in Biology (18 of 70). These chapters also form the base of JEE and NEET.
Class 11 is the year many students underestimate. It has no board exam, but roughly half of the JEE and NEET syllabus comes from it, and Class 12 builds directly on it. Here is where the marks sit in each subject.
Physics (70 marks)
| Units | Chapters | Marks |
|---|---|---|
| Measurement, Kinematics, Laws of Motion | Units and Measurement; Motion in a Straight Line; Motion in a Plane; Laws of Motion | 23 |
| Work & Energy, Rotation, Gravitation | Work, Energy and Power; System of Particles and Rotational Motion; Gravitation | 17 |
| Bulk Matter, Thermodynamics, Kinetic Theory | Mechanical Properties of Solids and Fluids; Thermal Properties of Matter; Thermodynamics; Kinetic Theory | 20 |
| Oscillations and Waves | Oscillations; Waves | 10 |
Chemistry (70 marks)
| Unit | Marks |
|---|---|
| Some Basic Concepts of Chemistry | 7 |
| Structure of Atom | 9 |
| Classification of Elements and Periodicity | 6 |
| Chemical Bonding | 7 |
| Chemical Thermodynamics | 9 |
| Equilibrium | 7 |
| Redox Reactions | 4 |
| Organic Chemistry: Basic Principles and Techniques | 11 |
| Hydrocarbons | 10 |
Maths (80 marks)
| Unit | Chapters | Marks |
|---|---|---|
| Sets and Functions | Sets; Relations and Functions; Trigonometric Functions | 23 |
| Algebra | Complex Numbers; Linear Inequalities; Permutations and Combinations; Binomial Theorem; Sequences and Series | 25 |
| Coordinate Geometry | Straight Lines; Conic Sections; Introduction to 3D Geometry | 12 |
| Calculus | Limits and Derivatives | 8 |
| Statistics and Probability | Statistics; Probability | 12 |
Biology (70 marks)
| Unit | Marks |
|---|---|
| Diversity in the Living World | 15 |
| Structural Organisation in Plants and Animals | 10 |
| Cell: Structure and Functions | 15 |
| Plant Physiology | 12 |
| Human Physiology | 18 |
Check the current syllabus on cbseacademic.nic.in, as schools may set their own annual paper pattern.
How not to fall behind
The most common mistake in Class 11 is finishing a chapter and never revisiting it until Class 12 – by then it is forgotten. A 20-minute revision of one old chapter every day, from a formula sheet or short notes, keeps the whole year fresh at very little cost.
Our Class 11 Science books are made for this: the Physics, Chemistry and Maths formula sheets and the Biology short notes, singly or as PCM / PCMB sets.
Frequently asked questions
Is Class 11 important for JEE and NEET?
Yes. Roughly half of the JEE and NEET syllabus comes from Class 11 chapters such as mechanics, thermodynamics, organic basics and human physiology.
Which Class 11 Chemistry unit has the most marks?
Organic Chemistry: Some Basic Principles and Techniques, with 11 marks, followed by Hydrocarbons with 10.
