Careers360 Logo
CBSE Class 11 Chemistry Syllabus 2025-26: Download PDF, Topics & Marking Scheme

CBSE Class 11 Chemistry Syllabus 2025-26: Download PDF, Topics & Marking Scheme

Edited By Manasvini Gupta | Updated on Jun 12, 2025 03:56 PM IST | #CBSE Class 12th
Upcoming Event
CBSE Class 12th  Exam Date : 15 Jul' 2025 - 15 Jul' 2025

The Central Board of Secondary Education has released the CBSE 11th Chemistry paper syllabus PDF for the 2025-26 academic session. The CBSE Class 11 Chemistry syllabus 2025-26 PDF is available at cbseacademic.nic.in. Students can also find the direct download link to the syllabus in the article below.

This Story also Contains
  1. Topics Incorporated in CBSE 11th Chemistry Theory Paper 2025-26
  2. Unit-Wise CBSE 11th Chemistry Syllabus 2025-26
  3. CBSE Class 11 Chemistry Syllabus for Practicals 2025-26
  4. Tips to Prepare for CBSE 11th Chemistry Paper 2025-26
CBSE Class 11 Chemistry Syllabus 2025-26: Download PDF, Topics & Marking Scheme
CBSE Class 11 Chemistry Syllabus 2025-26: Download PDF, Topics & Marking Scheme

The CBSE Chemistry theory paper of Class 11 will carry 70 marks weightage, and 30 marks will be reserved for practicals and internal assessment. The CBSE Class 11 Chemistry syllabus for 2025-26 covers nine units. Main topics include Basic Concepts, Atomic Structure, Periodic Classification, Bonding, Thermodynamics, Equilibrium, and Redox Reactions. Organic Chemistry and Hydrocarbons carry the highest weightage together, contributing 21 marks.

Background wave

Download CBSE 11th Chemistry 2025-26 PDF

Subject Name

PDF Download Link

CBSE Class 11 Chemistry Syllabus 2025-26

Click Here

Topics Incorporated in CBSE 11th Chemistry Theory Paper 2025-26

Let us first have a look at the topics which will be covered in the CBSE Class 11 Chemistry theory paper. Students can also go through the marks allocation in the table below:

S. No

UNIT

Marks

1

Some Basic Concepts of Chemistry

7

2

Structure of Atom

9

3

Classification of Elements and Periodicity in Properties

6

4

Chemical Bonding and Molecular Structure

7

5

Chemical Thermodynamics

9

6

Equilibrium

7

7

Redox Reactions

4

8

Organic Chemistry: Some Basic Principles and Techniques

11

9

Hydrocarbons

10

Total

70

Unit-Wise CBSE 11th Chemistry Syllabus 2025-26

In the following table, students can find the detailed unit-wise CBSE 11th Chemistry syllabus topics. Go through the table carefully and prepare accordingly for the final exams.

Unit

Topics covered

Unit 1: Some Basic Concepts of Chemistry

General Introduction: Importance and scope of Chemistry, Nature of matter, laws of chemical combination, Dalton's atomic theory: concept of elements, atoms and molecules, atomic and molecular masses, mole concept and molar mass, percentage composition, empirical and molecular formula, chemical reactions, stoichiometry and calculations based on stoichiometry.

Unit 2: Structure of Atom

Discovery of Electron, Proton and Neutron, atomic number, isotopes and isobars. Thomson's model and its limitations. Rutherford's model and its limitations, Bohr's model and its limitations, concept of shells and subshells, dual nature of matter and light, de Broglie's relationship, Heisenberg uncertainty principle, concept of orbitals, quantum numbers, shapes of s, p and d orbitals, rules for filling electrons in orbitals - Aufbau principle, Pauli's exclusion principle and Hund's rule, electronic configuration of atoms, stability of half-filled and completely filled orbitals.

Unit 3: Classification of Elements and Periodicity in Properties

Significance of classification, brief history of the development of periodic table, modern periodic law and the present form of periodic table, periodic trends in properties of elements -atomic radii, ionic radii, inert gas radii, Ionization enthalpy, electron gain enthalpy, electronegativity, valiancy, Nomenclature of elements with atomic number greater than 100.

Unit 4: Chemical Bonding and Molecular Structure

Valence electrons, ionic bond, covalent bond, bond parameters, Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules, VSEPR theory, concept of hybridization, involving s, p and d orbitals and shapes of some simple molecules, molecular orbital theory of homonuclear diatomic molecules (qualitative idea only), Hydrogen bond.

Unit 5: Chemical Thermodynamics

Concepts of System and types of systems, surroundings, work, heat, energy, extensive and intensive properties, state functions. First law of thermodynamics -internal energy and enthalpy, heat capacity and specific heat, measurement of ∆U and ∆H, Hess's law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, ionization, solution and dilution. Second law of Thermodynamics (brief introduction), Introduction of entropy as a state function, Gibb's energy change for spontaneous and non- spontaneous processes, criteria for equilibrium, Third law of thermodynamics (brief introduction).

Unit 6: Equilibrium

Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium – Le Chatelier's principle, ionic equilibrium- ionization of acids and bases, strong and weak electrolytes, degree of ionization, ionization of poly basic acids, acid strength, concept of pH, hydrolysis of salts (elementary idea), buffer solution, Henderson Equation, solubility product, common ion effect (with illustrative examples).

Unit 7: Redox Reactions

Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, in terms of loss and gain of electrons and change in oxidation number, applications of redox reactions.

Unit 8: Organic Chemistry – Some Basic Principles and Techniques

General introduction, methods of purification, qualitative and quantitative analysis, classification and IUPAC nomenclature of organic compounds. Electronic displacements in a covalent bond: inductive effect, electrometric effect, resonance and hyper conjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.

Unit 9: Hydrocarbons

Aliphatic Hydrocarbons Alkanes - Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions including free radical mechanism of halogenation, combustion and pyrolysis. Alkenes - Nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation, chemical reactions: addition of hydrogen, halogen, water, hydrogen halides (Markovnikov's addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition. Alkynes - Nomenclature, structure of triple bond (ethyne), physical properties, methods of preparation, chemical reactions: acidic character of alkynes, addition reaction of - hydrogen, halogens, hydrogen halides and water. Aromatic Hydrocarbons Introduction, IUPAC nomenclature, benzene: resonance, aromaticity, chemical properties: mechanism of electrophilic substitution. Nitration, sulphonation, halogenation, Friedel-Craft's alkylation and acylation, directive influence of functional group in mono-substituted benzene, carcinogenicity and toxicity

CBSE Class 11 Chemistry Syllabus for Practicals 2025-26

In the following table, students can find the CBSE Class 11 Chemistry syllabus for practicals. Check it out:

Section

Content

A. Basic Laboratory Techniques

1. Cutting glass tube and a glass rod

2. Bending a glass tube

3. Drawing out a glass jet

4. Boring a cork

B. Characterisation and Purification of Chemical Substances

1. Determination of the melting point of an organic compound

2. Determination of the boiling point of an organic compound

3. Crystallisation of an impure sample (choose one): Alum, Copper Sulphate, Benzoic Acid

C. Experiments Based on pH

1. Any one experiment:

– Determination of pH of solutions from fruit juices or known concentrations using pH paper/universal indicator

– Comparing the pH of strong and weak acids of the same concentration

– pH change in the titration of a strong base with universal indicator

2. Study pH change by common-ion effect in weak acids and bases

D. Chemical Equilibrium

Perform one of the following:

– Study the equilibrium shift between ferric and thiocyanate ions with varying concentrations

– Study equilibrium shift between [Co(H₂O)₆]²⁺ and chloride ions by altering ion concentrations

E. Quantitative Estimation

1. Use of mechanical/electronic balance

2. Preparation of a standard solution of Oxalic acid

3. Titration: NaOH solution vs. standard Oxalic acid

4. Preparation of standard Sodium Carbonate solution

5. Titration: HCl solution vs. standard Sodium Carbonate

F. Qualitative Analysis

1. Identification of one cation and one anion in a salt sample:

Cations: Pb²⁺, Cu²⁺, Al³⁺, Fe³⁺, Mn²⁺, Ni²⁺, Zn²⁺, Co²⁺, Ca²⁺, Sr²⁺, Ba²⁺, Mg²⁺, NH₄⁺

Anions: CO₃²⁻, S²⁻, SO₃²⁻, NO₃⁻, NO₂⁻, Cl⁻, Br⁻, I⁻, SO₄²⁻, PO₄³⁻, CH₃COO⁻

(Insoluble salts excluded)

2. Detection of Nitrogen, Sulphur, and Chlorine in organic compounds

Evaluation Scheme for CBSE 11th Chemistry Syllabus 2025-26

1749723744503

Tips to Prepare for CBSE 11th Chemistry Paper 2025-26

  • Focus on high-weightage units like Organic Chemistry and Thermodynamics.

  • Understand concepts thoroughly instead of rote learning. Concept clarity is required for atomic structure, bonding, and chemical equations.

  • Follow the NCERT book religiously. Cover all topics and stay consistent while studying.

  • Practice drawing neat diagrams for structures and apparatus.

  • Keep your practical file well-maintained throughout the academic year.

  • Revise topics weekly and focus on retaining information in a relaxed manner. Do not stress upon rote learning.

Aakash Repeater Courses

Take Aakash iACST and get instant scholarship on coaching programs.

Also, check: CBSE Class 11 Syllabus 2025-26 (All Subjects)

Frequently Asked Questions (FAQs)

1. Which chapters carry the highest weightage in CBSE 12th Physics?

Optics (18 marks) and Magnetic Effects of Current and Magnetism (17 marks) carry the highest weightage.

2. Where can I find the detailed syllabus and marking scheme for the CBSE 12th Physics subject?

The latest CBSE Class 12 Physics syllabus and marking scheme 2025-26 is available at cbseacademic.nic.in. The download link to the syllabus PDF is also provided in the article above.

Articles

Upcoming School Exams

Application Date:16 May,2025 - 30 June,2025

Application Date:16 May,2025 - 30 June,2025

Application Date:01 June,2025 - 30 June,2025

Application Date:01 June,2025 - 30 June,2025

View All School Exams

Explore Top Universities Across Globe

Questions related to CBSE Class 12th

Have a question related to CBSE Class 12th ?

Changing from the CBSE board to the Odisha CHSE in Class 12 is generally difficult and often not ideal due to differences in syllabi and examination structures. Most boards, including Odisha CHSE , do not recommend switching in the final year of schooling. It is crucial to consult both CBSE and Odisha CHSE authorities for specific policies, but making such a change earlier is advisable to prevent academic complications.

Hello there! Thanks for reaching out to us at Careers360.

Ah, you're looking for CBSE quarterly question papers for mathematics, right? Those can be super helpful for exam prep.

Unfortunately, CBSE doesn't officially release quarterly papers - they mainly put out sample papers and previous years' board exam papers. But don't worry, there are still some good options to help you practice!

Have you checked out the CBSE sample papers on their official website? Those are usually pretty close to the actual exam format. You could also look into previous years' board exam papers - they're great for getting a feel for the types of questions that might come up.

If you're after more practice material, some textbook publishers release their own mock papers which can be useful too.

Let me know if you need any other tips for your math prep. Good luck with your studies!

It's understandable to feel disheartened after facing a compartment exam, especially when you've invested significant effort. However, it's important to remember that setbacks are a part of life, and they can be opportunities for growth.

Possible steps:

  1. Re-evaluate Your Study Strategies:

    • Identify Weak Areas: Pinpoint the specific topics or concepts that caused difficulties.
    • Seek Clarification: Reach out to teachers, tutors, or online resources for additional explanations.
    • Practice Regularly: Consistent practice is key to mastering chemistry.
  2. Consider Professional Help:

    • Tutoring: A tutor can provide personalized guidance and support.
    • Counseling: If you're feeling overwhelmed or unsure about your path, counseling can help.
  3. Explore Alternative Options:

    • Retake the Exam: If you're confident in your ability to improve, consider retaking the chemistry compartment exam.
    • Change Course: If you're not interested in pursuing chemistry further, explore other academic options that align with your interests.
  4. Focus on NEET 2025 Preparation:

    • Stay Dedicated: Continue your NEET preparation with renewed determination.
    • Utilize Resources: Make use of study materials, online courses, and mock tests.
  5. Seek Support:

    • Talk to Friends and Family: Sharing your feelings can provide comfort and encouragement.
    • Join Study Groups: Collaborating with peers can create a supportive learning environment.

Remember: This is a temporary setback. With the right approach and perseverance, you can overcome this challenge and achieve your goals.

I hope this information helps you.







Hi,

Qualifications:
Age: As of the last registration date, you must be between the ages of 16 and 40.
Qualification: You must have graduated from an accredited board or at least passed the tenth grade. Higher qualifications are also accepted, such as a diploma, postgraduate degree, graduation, or 11th or 12th grade.
How to Apply:
Get the Medhavi app by visiting the Google Play Store.
Register: In the app, create an account.
Examine Notification: Examine the comprehensive notification on the scholarship examination.
Sign up to Take the Test: Finish the app's registration process.
Examine: The Medhavi app allows you to take the exam from the comfort of your home.
Get Results: In just two days, the results are made public.
Verification of Documents: Provide the required paperwork and bank account information for validation.
Get Scholarship: Following a successful verification process, the scholarship will be given. You need to have at least passed the 10th grade/matriculation scholarship amount will be transferred directly to your bank account.

Scholarship Details:

Type A: For candidates scoring 60% or above in the exam.

Type B: For candidates scoring between 50% and 60%.

Type C: For candidates scoring between 40% and 50%.

Cash Scholarship:

Scholarships can range from Rs. 2,000 to Rs. 18,000 per month, depending on the marks obtained and the type of scholarship exam (SAKSHAM, SWABHIMAN, SAMADHAN, etc.).

Since you already have a 12th grade qualification with 84%, you meet the qualification criteria and are eligible to apply for the Medhavi Scholarship exam. Make sure to prepare well for the exam to maximize your chances of receiving a higher scholarship.

Hope you find this useful!

hello mahima,

If you have uploaded screenshot of your 12th board result taken from CBSE official website,there won,t be a problem with that.If the screenshot that you have uploaded is clear and legible. It should display your name, roll number, marks obtained, and any other relevant details in a readable forma.ALSO, the screenshot clearly show it is from the official CBSE results portal.

hope this helps.

View All
Back to top