NCERT Class 11 Chemistry Book PDF 2026-27

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What Is the NCERT Class 11 Chemistry Book?

NCERT Class 11 Chemistry Book is the chemistry textbook prescribed by the CBSE board and published by the National Council of Educational Research and Training (NCERT). It is the single most important resource for Class 11 Science students, since CBSE frames its board question papers directly from NCERT content, and both JEE and NEET draw a large share of their Chemistry questions from concepts first introduced here.

Unlike a supplementary guide, the NCERT Class 11 Chemistry Book is designed to build core conceptual foundations — from the mole concept and atomic structure to chemical bonding, thermodynamics, equilibrium, and organic chemistry basics — that every higher-level chemistry topic in Class 12 and competitive exams builds upon.

NCERT Class 11 Chemistry Book: Structure (Part 1 and Part 2)

The NCERT Class 11 Chemistry Book is published in two parts and contains 9 units.  

NCERT Chemistry Class 11 — Full Chapter List (Part 1 & Part 2)

How to Download the NCERT Class 11 Chemistry PDF?

Unit-wise (Chapter-wise) PDFs for NCERT Class 11 Chemistry can be downloaded for free from the official NCERT website (ncert.nic.in) or from the links provided in the table below on eSaral. Downloading individual units — rather than the entire book — lets you focus on one topic at a time and is especially useful during revision weeks before board exams.

Which Chapters Are in NCERT Class 11 Chemistry Part 1 and Part 2? 

NCERT Class 11 Chemistry has 9 units split across two parts. Here is a full breakdown:

NCERT Class 11 Chemistry Book PDF 2026-27 –Unit-wise (Chapter-wise) Download 

Part -1

Part -2

For worked solutions to in-text and exercise questions, refer to NCERT Solutions for Class 11 Chemistry — helpful if you want to preview what Class 11 builds on — or explore all NCERT Solutions in one place.

NCERT Chemistry Class 11 vs the CBSE Board Syllabus (2026-27)

For the 2026–27 academic session, CBSE has prescribed 9 theory units in Class 11 Chemistry, carrying a total of 70 marks. Students may find older NCERT resources with additional chapters, so it is important to follow the latest CBSE syllabus while preparing for school examinations. The unit-wise marks distribution is provided below for easy reference.

CBSE Class 11 Chemistry Syllabus 2026-27 — Unit-wise Weightage

This is exactly why NEET and JEE aspirants are often advised not to skip the "extra" chapters (States of Matter, Hydrogen, s-Block, Environmental Chemistry) even though they carry less direct board weightage — competitive exams test the complete NCERT Chemistry Class 11 syllabus, not just the 9 board-weighted units.

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What Is the NCERT Class 11 Chemistry Book?

NCERT Class 11 Chemistry Book is the chemistry textbook prescribed by the CBSE board and published by the National Council of Educational Research and Training (NCERT). It is the single most important resource for Class 11 Science students, since CBSE frames its board question papers directly from NCERT content, and both JEE and NEET draw a large share of their Chemistry questions from concepts first introduced here.

Unlike a supplementary guide, the NCERT Class 11 Chemistry Book is designed to build core conceptual foundations — from the mole concept and atomic structure to chemical bonding, thermodynamics, equilibrium, and organic chemistry basics — that every higher-level chemistry topic in Class 12 and competitive exams builds upon.

NCERT Class 11 Chemistry Book: Structure (Part 1 and Part 2)

The NCERT Class 11 Chemistry Book is published in two parts and contains 9 units.  

NCERT Chemistry Class 11 — Full Chapter List (Part 1 & Part 2)

How to Download the NCERT Class 11 Chemistry PDF?

Unit-wise (Chapter-wise) PDFs for NCERT Class 11 Chemistry can be downloaded for free from the official NCERT website (ncert.nic.in) or from the links provided in the table below on eSaral. Downloading individual units — rather than the entire book — lets you focus on one topic at a time and is especially useful during revision weeks before board exams.

Which Chapters Are in NCERT Class 11 Chemistry Part 1 and Part 2? 

NCERT Class 11 Chemistry has 9 units split across two parts. Here is a full breakdown:

NCERT Class 11 Chemistry Book PDF 2026-27 –Unit-wise (Chapter-wise) Download 

Part -1

Part -2

For worked solutions to in-text and exercise questions, refer to NCERT Solutions for Class 11 Chemistry — helpful if you want to preview what Class 11 builds on — or explore all NCERT Solutions in one place.

Key Concepts and Formulas Introduced in NCERT Chemistry Class 11

Several foundational formulas are introduced in NCERT Class 11 Chemistry and are used repeatedly in Class 12 Chemistry and competitive exams:

• Mole Concept (Chapter 1 – Some Basic Concepts of Chemistry): Number of moles is given by $n = \frac{m}{M}$, where $m$ is the given mass and $M$ is the molar mass.
• de Broglie Wavelength (Chapter 2 – Structure of Atom): $\lambda = \frac{h}{mv}$, relating the wavelength of a moving particle to Planck's constant, its mass, and velocity.
• Bond Order (Chapter 4 – Chemical Bonding and Molecular Structure): $\text{Bond order} = \frac{N_b - N_a}{2}$, where $N_b$ is the number of electrons in bonding molecular orbitals and $N_a$ is the number in antibonding molecular orbitals.
• First Law of Thermodynamics (Chapter 5 – Chemical Thermodynamics): $\Delta U = q + w$, which relates the change in internal energy to the heat supplied and the work done on the system.
• Equilibrium Constant Expression (Chapter 6 – Equilibrium): For a general reaction $aA + bB \rightleftharpoons cC + dD$, the equilibrium constant in terms of concentration is $K_c = \frac{[C]^c[D]^d}{[A]^a[B]^b}$.
• Equivalent Weight (Chapter 7 – Redox Reactions): $\text{Equivalent weight} = \frac{M}{n}$, where $M$ is the molar mass and $n$ is the number of electrons lost or gained (n-factor).
• Degree of Unsaturation (Chapter 8 – Organic Chemistry: Some Basic Principles and Techniques): $DoU = \frac{2C + 2 + N - H}{2}$, where $C$, $H$, and $N$ are the number of carbon, hydrogen, and nitrogen atoms, respectively.
• General Formula for Alkanes (Chapter 9 – Hydrocarbons): $C_nH_{2n+2}$, the general molecular formula for saturated open-chain hydrocarbons.

NCERT Class 11 Chemistry Practicals and Evaluation Scheme

Alongside the 70-mark theory paper, NCERT Chemistry Class 11 practicals carry 30 marks, distributed as follows:

Table: NCERT Class 11 Chemistry Practical Evaluation Scheme

Practicals based on this scheme include titrations (acid-base and redox), qualitative salt analysis (detecting cations and anions), pH-based experiments, and one investigatory project — all directly tied to concepts taught in the NCERT Class 11 Chemistry Book.

Why Is NCERT Class 11 Chemistry Important for Boards, JEE, and NEET?

• CBSE Boards: Since board question papers are set directly from NCERT text, examples, and exercises, thorough reading of NCERT Chemistry Class 11 is non-negotiable for scoring well.
• NEET: A large share of NEET Chemistry — spanning Mole Concept, Structure of Atom, Chemical Bonding, Equilibrium, and Hydrocarbons — is drawn directly from concepts first introduced in the NCERT Class 11 Chemistry Book. Practice these directly with NEET Chapterwise PYQ.
• JEE Main & Advanced: JEE frequently rewards students who know NCERT concepts precisely, especially in Physical Chemistry (Mole Concept, Thermodynamics, Equilibrium) and Organic Chemistry basics. To practice these concepts through previous year questions, check out JEE Main Chapterwise PYQ

Is NCERT Enough for JEE and NEET Chemistry Preparation? 

For NEET-UG

NCERT Class 11 and Class 12 Chemistry books together cover approximately 60–70% of NEET Chemistry in terms of direct conceptual questions. For NEET, reading NCERT word-for-word — including footnotes and diagrams — is essential. Every reaction mechanism in Organic Chemistry (Chapters 12 and 13) and every property listed in s-block and p-block chapters can become a NEET question. Once you've built this base, check your exact chapter weightage with eSaral's NEET Chemistry Weightage breakdown to prioritize revision

For JEE Main

JEE Main Chemistry is roughly split into three segments: Physical, Inorganic, and Organic. NCERT covers Inorganic and conceptual Organic very well. Physical Chemistry — particularly Thermodynamics, Equilibrium, and Electrochemistry — needs additional numerical practice beyond NCERT exercises. Struggling to apply these concepts under timed conditions? eSaral's JEE Test Series is built specifically around this NCERT-first approach.

For JEE Advanced

JEE Advanced requires a depth of reasoning that goes beyond NCERT. However, every JEE Advanced Chemistry question has its roots in NCERT concepts. The book must be mastered first before moving to advanced resources.

For solutions to Class 11 Physics and Maths alongside Chemistry preparation, refer to NCERT Solutions for Class 11 Physics — particularly useful for students managing multi-subject boards and JEE prep simultaneously. The book must be mastered first before moving to advanced resources — JEE Advanced Chapterwise PYQ is a good next step to test that mastery.

Explore More on eSaral (Related NCERT Class 11 Chemistry Resources)

• Download the complete chapter-wise NCERT Class 11 Chemistry Book PDF: NCERT Books for Class 11 Chemistry – Free PDF Download →
• Practice extra questions beyond the textbook: NCERT Exemplar Class 11 Chemistry – Free PDF Download →
• Need the Hindi-medium version of the book? NCERT Class 11 Chemistry Book PDF in Hindi →
• Browse NCERT books for all Class 11 subjects: NCERT Books Class 11 PDF Download – All Subjects →
• Test your Class 11 Chemistry concepts under exam conditions: Explore eSaral's NEET Test Series →
• Practice previous year questions chapter-wise: JEE Main Chapterwise PYQ with Solutions →

Reading NCERT Chemistry Class 11 but still confused about which concepts matter most for boards vs JEE/NEET? eSaral's Class 11 Chemistry course, taught by IIT Bombay faculty, walks through every NCERT chapter with structured notes, solved examples, and a 5-layer doubt-solving system built specifically around the NCERT syllabus. Start your free eSaral Class 11 Chemistry demo class today →

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