The CBSE Class 12 Exam Pattern 2027 explains the subject-wise marks distribution, theory and practical assessment, question types, and passing criteria for Science, Commerce, and Humanities students. Each subject is generally assessed out of 100 marks, but the theory and practical/internal assessment split varies by subject.

For subjects such as Physics, Chemistry, and Biology, the common distribution is 70 marks for theory and 30 for practicals. Mathematics, English Core, Accountancy, Economics, and several other subjects generally follow an 80-mark theory and 20-mark internal assessment or project structure. Students should refer to the CBSE 2026–27 curriculum and subject-wise sample papers for the applicable exam pattern and marking scheme.

Table of Contents

CBSE Class 12 Exam Pattern 2027 Highlights
Subject-wise CBSE Class 12 Exam Pattern 2027
CBSE Class 12 Chemistry Exam Pattern 2027
CBSE Class 12 Marking Scheme 2027
Key Features of CBSE Class 12 Exam Pattern 2027
CBSE Class 12 Exam Pattern 2027 FAQs

CBSE Class 12 Exam Pattern 2027 Highlights

Check out the table below for the major highlights of the CBSE Class 12 Exam Pattern 2027:

Particular	Details
Mode of Exam	Offline / Pen-and-paper-based theory exam Practicals/internal assessment conducted by the respective schools
Subjects	Science, Commerce, Arts, Vocational
Exam Pattern	50% MCQs, case/source-based 20% select-response MCQs 30% short/long answers
Theory Paper Duration	Generally 3 hours
Theory Marks	Usually 70 or 80 marks, depending on the subject
Practical/Internal/Project	Usually 20 or 30 marks
Total Marks per Subject	100 marks per subject (theory + practical/internal assessment)
Question Types	MCQs/objective questions, short-answer, long-answer, case/source-based and application-based questions, depending on the subject
Practical Subjects	Science subjects (Physics, Chemistry, Biology) Mathematics English Accountancy History Political Science
Theory Paper Weightage	70 marks for Science subjects (Physics, Chemistry, Biology) and 80 marks for Mathematics, Commerce, and Humanities subjects
Passing Criteria	Minimum 33% in theory and 33% in practical/internal assessment, evaluated separately.

Subject-wise CBSE Class 12 Exam Pattern 2027

Subject-wise CBSE Class 12 exam pattern 2027 includes the exam structure for each subject, including the theory and practical components, question types, marks distribution, duration, and assessment scheme. Students can check the detailed exam pattern for subjects such as Mathematics, Physics, Chemistry, Biology, English, Accountancy, Business Studies, Economics, etc., to understand the weightage of different sections and prepare accordingly. The subject-wise CBSE Class 12 exam pattern 2027 is given below for the major Science, Commerce, and Humanities subjects along with the marks allotted to them.

CBSE Class 12 Maths Exam Pattern 2027

Mathematics does not have a practical component but carries an internal assessment including project work, activities, and periodic tests. Calculus carries the highest weightage in the Mathematics paper with 35 marks, followed by Vectors and Three-Dimensional Geometry with 14 marks. The CBSE Class 12 Maths Exam Pattern 2027 consists of an 80-mark theory paper and 20 marks for internal assessment.

Units	High-Weightage Topics	Marks Allotted
Relations and Functions	Relations, functions, inverse trigonometric functions	8
Algebra	Matrices, determinants, and their properties	10
Calculus	Continuity and differentiability, applications of derivatives, integrals, applications of integrals, differential equations	35
Vectors and Three-Dimensional Geometry	Vectors, direction cosines, lines and planes, shortest distance	14
Linear Programming	Linear programming problems and graphical solutions	5
Probability	Conditional probability, Bayes' theorem, random variables	8
Total Theory		80
Internal Assessment	Project work, periodic tests, activities	20

CBSE Class 12 Physics Exam Pattern 2027

CBSE Class 12 Physics Exam Pattern 2027 carries 70 marks for theory and 30 marks for practical work. The official curriculum combines several chapters into broader units for marks distribution. The highest allocation is 18 marks for Electromagnetic Induction and Alternating Currents, Electromagnetic Waves and Optics, followed by 17 marks for Current Electricity and Magnetic Effects of Current and Magnetism.

Units	High-weightage topics	Marks Allotted
Electrostatics + Current Electricity	Gauss's law, capacitors, Kirchhoff's laws, Wheatstone bridge	16
Magnetic Effects of Current & Electromagnetic Induction/AC	Biot-Savart law, Ampere's circuital law, Faraday's and Lenz's laws, AC circuits	17
Electromagnetic Induction and Alternating Currents + Electromagnetic Waves + Optics	EMI, AC, electromagnetic waves, ray optics, wave optics	18
Dual Nature + Atoms and Nuclei	Photoelectric effect, atoms, nuclei, Bohr model, semiconductors and logic gates	12
Electronic Devices	Semiconductor materials, devices and simple circuits	7
Theory Total		70
Practical + Viva + Record	Experiments, investigatory project, and viva	30

CBSE Class 12 Chemistry Exam Pattern 2027

CBSE Class 12 Chemistry Exam Pattern 2027 indicates that the paper is divided into Physical, Organic, and Inorganic sections spread across nine to ten units. 70 marks are allotted for theory and 30 marks for practical assessment. Electrochemistry has the highest individual unit weightage of 9 marks, while Aldehydes, Ketones and Carboxylic Acids carry 8 marks.

Units	High-weightage topics	Marks Allotted
Solutions	Concentration, solubility, colligative properties, Raoult's law	7
Electrochemistry	Electrochemical cells, Nernst equation, conductance, electrolytic and galvanic cells	9
Chemical Kinetics	Rate law, integrated rate equations, temperature dependence, order and molecularity	7
d- and f-Block Elements	Electronic configuration, transition elements, lanthanoids and actinoids	7
Coordination Compounds	Werner's theory, IUPAC nomenclature, isomerism and bonding	7
Haloalkanes and Haloarenes	Preparation, properties and chemical reactions, Nucleophilic substitution, SN1 and SN2 mechanisms	6
Alcohols, Phenols and Ethers	Classification, preparation and reactions	6
Aldehydes, Ketones and Carboxylic Acids	Carbonyl compounds, preparation and reactions, Nucleophilic addition, oxidation and reduction reactions	8
Amines	Classification, preparation, reactions and diazonium salts	6
Biomolecules	Carbohydrates, proteins, enzymes and nucleic acids	7
Theory Total		70
Practical	Laboratory experiments, Volumetric analysis, salt analysis, content-based experiments, project, record, and viva	30

CBSE Class 12 Biology Exam Pattern 2027

CBSE Class 12 Biology Exam Pattern 2027 consists of 70 theory marks and 30 practical marks. Genetics and Evolution carries the highest weightage with 20 marks, followed by Reproduction, which carries 16 marks.

Units	High-weightage topics	Marks allotted
Reproduction	Sexual reproduction in flowering plants, human reproduction, reproductive health	16
Genetics and Evolution	Mendelian inheritance, molecular basis of inheritance, evolution	20
Biology and Human Welfare	Human health and diseases, microbes in human welfare	12
Biotechnology and its Applications	Biotechnology principles, Genetic engineering, applications in health and agriculture	12
Ecology and Environment	Organisms and populations, ecosystem, biodiversity and conservation	10
Theory Total		70
Practical	Experiments, project, record, viva, spotting, experiments, slide preparation	30

CBSE Class 12 English Exam Pattern 2027

CBSE Class 12 English Exam Pattern 2027 for English Core is divided into Reading Skills, Creative Writing Skills, and Literature Textbook and Supplementary Reading Text. The literature section has the highest weightage, so students should prepare themes, characters, literary devices, important incidents, and analytical interpretations thoroughly. Reading comprehension and writing skills together constitute nearly half the paper. The theory paper carries 80 marks, while Listening and Speaking Skills and Project Work together account for 20 marks.

Units	High-weightage topics	Marks Allotted
Reading Skills	Unseen factual/descriptive/literary passage and case-based factual passage	22
Creative Writing Skills	Notice, invitation/reply, letter, article/report, formal letters, article/report writing, grammar-in-context	18
Literature Textbook and Supplementary Reading Text	Flamingo and Vistas extracts, short answers and long answers, Prose and poetry analysis, extract-based questions	40
Theory Total		80
Internal Assessment	Listening/speaking activities, project work, assessment of a novel	20

CBSE Class 12 History Exam Pattern 2027

History forCBSE Class 12 Exam 2027 is divided into three broad sections: ancient, medieval, and modern Indian history. CBSE Class 12 History Exam Pattern 2027 allocates 25 marks each to Themes in Indian History Part I, Part II, and Part III, with another 5 marks for map work. The modern India section carries the heaviest weightage, largely because it includes the colonial period, nationalist movement, and post-independence themes. The project carries 20 marks.

Units	High-Weightage Topics	Marks Allotted
Themes in Indian History Part I	Harappan Civilisation, early states and economies, caste/class, Bricks, beads, and bones; Mahajanapadas	25
Themes in Indian History Part II	Travellers' accounts, Bhakti-Sufi traditions, Vijayanagara, Mughal agrarian society	25
Themes in Indian History Part III	Colonialism and countryside, Revolt of 1857, Gandhi and national movement, Constitution	25
Map Work	Locations associated with prescribed themes	5
Theory Total		80
Project Work	Historical research/project	20

CBSE Class 12 Political Science Exam Pattern 2027

CBSE Class 12 Political Science Exam Pattern 2027 contains two equally weighted parts: Contemporary World Politics and Politics in India Since Independence. Each part carries 40 marks. Within Part A, most chapters carry 6 marks, while Globalisation carries 4 marks. In Part B, Recent Developments in Indian Politics has the highest chapter-level allocation of 8 marks. The unit-wise breakdown of the 80-mark Political Science theory paper is provided below.

Unit	High-Weightage Topics	Marks Allotted
Cold War Era and Contemporary Centres of Power	Bipolarity, alternative power centres, European Union, ASEAN	20
Contemporary South Asia and International Organisations	India's neighbourhood, UN and its reform, globalisation	20
Nation-Building and Era of One-Party Dominance	Challenges of nation-building, Congress system, planning debates	20
Politics of Planned Development, Regional Aspirations, Recent Developments	Emergency, rise of regional parties, coalition politics, contemporary issues	20
Theory Total		80
Internal Assessment	Map work, project, class participation	20

CBSE Class 12 Accountancy Exam Pattern 2027

CBSE Class 12 Accountancy Exam Pattern 2027 carries 80 theory marks and 20 marks for project work. Accountancy is divided into two parts: partnership and company accounts, and analysis of financial statements. Accounting for Partnership Firms is the highest-weightage unit with 36 marks, followed by Accounting for Companies with 24 marks. Journal entries, ledger postings, and financial statement analysis remain the highest-scoring areas.

Units	High-Weightage Topics	Marks Allotted
Accounting for Partnership Firms	Partnership fundamentals, reconstitution, dissolution, admission and retirement of partners	36
Accounting for Companies	Issue and redemption of debentures, share capital	8
Analysis of Financial Statements	Comparative and common-size statements, accounting ratios	12
Cash Flow Statement	Cash flow from operating, investing and financing activities	8
Computerised Accounting	Spreadsheet basics, database applications in accounting	16
Theory Total		80
Project Work	Project file and viva	20

CBSE Class 12 Economics Exam Pattern 2027

CBSE Class 12 Economics Exam Pattern 2027 consists of 80 theory marks and 20 marks for project work. Introductory Macroeconomics and Indian Economic Development contribute 40 marks each to the theory paper. National Income Accounting and the chapters on the development experience of India carry the highest weightage. Within Macroeconomics, Determination of Income and Employment carries 12 marks. In Indian Economic Development, current challenges faced by the Indian economy have the highest allocation at 20 marks.

Unit	High-Weightage Topics	Marks Allotted
National Income and Related Aggregates	Circular flow of income, methods of calculating national income	10
Money and Banking	Functions of money, central bank and credit control	6
Determination of Income and Employment	Aggregate demand, multiplier, investment	12
Government Budget and the Economy	Fiscal deficit, revenue and capital budget	6
Balance of Payments	Foreign exchange rate, BOP account	6
Development Experience and Economic Reforms	Indian economy on the eve of independence, planning, 1991 reforms	14
Current Challenges Facing the Indian Economy	Poverty, human capital, rural development, employment	18
Development Experience of India: A Comparison with Neighbours	India, Pakistan, and China development indicators	8
Theory Total		80
Internal Assessment	Project work, viva	20

CBSE Class 12 Business Studies Exam Pattern 2027

The CBSE Class 12 Business Studies Exam Pattern 2027 provides 80 marks for theory and 20 marks for project work. Business Studies covers principles and functions of management along with business finance and marketing. Principles and Functions of Management, including planning, organising, staffing, directing, and controlling, carries 50 theory marks, making it the largest component of the paper.

Unit	High-Weightage Topics	Marks Allotted
Nature and Significance of Management	Levels of management, principles of Fayol and Taylor	8
Business Environment	Dimensions of business environment, liberalisation and globalisation	4
Planning and Organising	Steps in planning, types of organisation structure, delegation	10
Staffing, Directing and Controlling	Recruitment and selection, leadership, motivation, communication	20
Financial Management	Financial planning, capital structure, fixed and working capital	12
Financial Markets	Money market, capital market, stock exchange	8
Marketing Management	Marketing mix, product, pricing, promotion	10
Consumer Protection	Consumer rights, redressal machinery	8
Theory Total		80
Internal Assessment	Project work, viva	20

CBSE Class 12 Marking Scheme 2027

CBSE Class 12 Marking Scheme 2027 indicates that 70 marks are allotted for theory and 30 marks for practicals in Science subjects (Physics, Chemistry, Biology). Subjects like Mathematics, Accountancy, Business Studies, Economics, History, Political Science, and English allot 80 marks to theory and 20 marks to practicals. CBSE's official passing marks is at least 33% in the external examination, while subjects involving practical work require 33% separately in theory and practical, in addition to the aggregate requirement for the subject. A broad overview of the major subjects covered and their marking scheme is provided in the table below:

Stream	Theory Marks	Practical/ Internal	Total Marks	Passing Marks
Physics	70	30	100	23/70 (Theory), 10/30 (Practical)
Chemistry	70	30	100	23/70 (Theory), 10/30 (Practical)
Biology	70	30	100	23/70 (Theory), 10/30 (Practical)
Mathematics	80	20	100	26/80 (Theory), 7/20 (Internal)
English Core	80	20	100	26/80 (Theory), 7/20 (Internal)
History	80	20	100	26/80 (Theory), 7/20 (Internal)
Political Science	80	20	100	26/80 (Theory), 7/20 (Internal)
Accountancy	80	20	100	26/80 (Theory), 7/20 (Internal)
Economics	80	20	100	26/80 (Theory), 7/20 (Internal)
Business Studies	80	20	100	26/80 (Theory), 7/20 (Internal)

Key Features of CBSE Class 12 Exam Pattern 2027

CBSE Class 12 Exam Pattern 2027 retains the core structure introduced in recent years while prioritizing application, conceptual understanding, interpretation, analysis and competency-based assessment. The paper will have a mix of MCQs, case-based questions, and long- and short-answer questions. Each paper will carry 100 marks (theory + practical). The CBSE Class 12 Syllabus 2027 covers core subjects including Languages, Physics, Chemistry, Biology, Mathematics, Accountancy, Economics, Business Studies, and Computer Science, following the NCERT curriculum for theory, practicals, and project work.

The board will now focus more on competency-based questions. Roughly half of every theory paper now has competency-based questions such as case studies, source-based questions, and multiple-choice questions.
Constructed response questions will be reduced compared to older papers. The remaining marks are split between short-answer and long-answer questions.
There is no negative marking for Objective and MCQ-style questions.
Students are allowed to choose only one additional subject among new-age skill electives, including Land Transportation Associate, Electronics and Hardware, Physical Activity Trainer, and Design Thinking and Innovation.
The marks allotted for theory and practical papers vary significantly by subject. For example, Mathematics has 80 theory marks and 20 internal assessment marks, whereas Physics has 70 theory marks and 30 practical marks.

CBSE Class 12 Exam Pattern 2027 FAQs

What is the CBSE Class 12 Exam Pattern 2027?

The CBSE Class 12 exam pattern includes theory papers and practical, project or internal assessments, depending on the subject. Question types and marks distribution vary by subject and are detailed in the official curriculum and sample papers.

Is CBSE Class 12 500 or 600 marks?

CBSE Class 12 is commonly calculated out of 500 marks for five subjects, with each subject generally carrying 100 marks. Students taking six subjects may have 600 marks in total, depending on their subject combination and result calculation.

How many marks are required to pass CBSE Class 12 in 2027?

Students must meet the prescribed passing criteria for their subjects. Where separate theory and practical or internal assessment requirements apply, students must satisfy those requirements as well as the applicable aggregate requirement.

Is 22 out of 70 pass or fail in CBSE Class 12?

A score of 22 out of 70 is below 33% of the theory marks. Students should aim for at least 23 marks and check the applicable subject-wise passing rules.

What is the duration of the CBSE Class 12 theory exam?

Many CBSE Class 12 theory papers have a duration of three hours. Students should check the duration mentioned in the sample question paper for their subject.

Is the CBSE 2026 paper hard?

The difficulty of a CBSE Class 12 paper depends on the subject, question paper and individual preparation. Reviewing the syllabus, sample papers and marking schemes can help students prepare for different question types.

Where can I check the CBSE Class 12 marking scheme for 2026–27?

Students can check the official CBSE Class XII sample question papers and marking schemes for 2026–27 to understand the question paper structure, marks allocation and expected answer format.

Are practical exams included in the CBSE Class 12 Exam Pattern 2027?

Practical examinations, project work or internal assessment apply according to the subject. The marks allocated to each component are specified in the relevant CBSE curriculum.

What is the weightage of MCQs in the CBSE Class 12 Exam Pattern 2027?

MCQ weightage varies by subject and question paper. Students should consult the relevant 2026–27 sample question paper rather than assume that the same percentage applies to every subject.

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