CBSE Class 10 General: CBSE Class 10 Syllabus 2025-26 All Subjects PDF Download & Complete Guide

Accessing the official CBSE Class 10 General curriculum guidelines and subject-wise blueprint is the foundational step for every student appearing in the 2025-26 board examinations. The Central Board of Secondary Education (CBSE) has structured the 2025-2026 academic session with a strong focus on competency-focused assessments, critical thinking, and structured internal evaluations. This comprehensive guide delivers detailed insights into the latest curriculum framework, unit-wise weightage, assessment architecture, and direct syllabus overviews for all core subjects.

CBSE Class 10 Board Exam 2025-26: Assessment Scheme Overview

For the academic year 2025-26, CBSE retains the 80 + 20 assessment model across all major academic subjects. The final score comprises an 80-mark annual board theory examination and a 20-mark internal assessment conducted by schools.

Question Paper Pattern & Typology (2025-26)

• Competency-Focused Questions: 50% weightage (MCQs, Case-Based Questions, Integrated Source Analysis).
• Select Response Type (Objective / MCQs): 20% weightage.
• Constructed Response Questions: 30% weightage (Short Answer & Long Answer type).

Subject-Wise Syllabus Breakdown & Key Concepts

1. Mathematics (Standard & Basic - Subject Codes 041 & 241)

Both Standard and Basic Mathematics share the exact same syllabus content, textbooks, and internal assessments; they differ solely in the difficulty and application level of the board theory question paper.

Core Mathematical Formulae & Concepts to Master:

• Quadratic Formula: For ax² + bx + c = 0, roots are given by x = (-b ± √(b² - 4ac)) / (2a). Discriminant D = b² - 4ac defines nature of roots (D > 0: two distinct real roots; D = 0: two equal real roots; D < 0: no real roots).
• Arithmetic Progression (AP): n-th term a_n = a + (n - 1)d; Sum of first n terms S_n = (n/2)[2a + (n - 1)d] = (n/2)[a + l].
• Section Formula: P(x, y) = ((m₁x₂ + m₂x₁)/(m₁ + m₂), (m₁y₂ + m₂y₁)/(m₁ + m₂)).

2. Science (Subject Code 086)

Class 10 Science covers an integrated balance of Chemical Substances, Living World, Natural Phenomena, and Current Electricity.

Fundamental Scientific Principles & Equations:

• Ohm's Law & Circuit Laws: V = I · R; Equivalent resistance in series R_s = R₁ + R₂ + R₃; in parallel 1/R_p = 1/R₁ + 1/R₂ + 1/R₃; Electric Power P = V · I = I² · R = V²/R.
• Lens & Mirror Formulas: Mirror Formula: 1/f = 1/v + 1/u; Lens Formula: 1/f = 1/v - 1/u; Magnification m = -v/u (Mirrors) and m = v/u (Lenses).
• Key Chemical Equations:
  • Esterification: CH₃COOH + C₂H₅OH → (conc. H₂SO₄) → CH₃COOC₂H₅ + H₂O
  • Saponification: CH₃COOC₂H₅ + NaOH → C₂H₅OH + CH₃COONa
  • Bleaching Powder Synthesis: Ca(OH)₂ + Cl₂ → CaOCl₂ + H₂O

3. Social Science (Subject Code 087)

Social Science is equally divided across four disciplines (20 marks each):

• History (India and the Contemporary World – II): The Rise of Nationalism in Europe, Nationalism in India, The Making of a Global World (Sub-topics 1 to 1.3), Print Culture and the Modern World.
• Geography (Contemporary India – II): Resources and Development, Forest and Wildlife Resources, Water Resources, Agriculture, Minerals and Energy Resources, Manufacturing Industries, Lifelines of National Economy (Map work only).
• Political Science (Democratic Politics – II): Power Sharing, Federalism, Gender, Religion and Caste, Political Parties, Outcomes of Democracy.
• Economics (Understanding Economic Development): Development, Sectors of the Indian Economy, Money and Credit, Globalization and the Indian Economy (What is Globalization?, Factors Enabling Globalization).

4. English Language and Literature (Subject Code 184)

• Section A – Reading Skills (20 Marks): Discursive passage (400-450 words) and Case-based factual passage with visual input/data charts (200-250 words).
• Section B – Writing Skills and Grammar (20 Marks): Formal Letter Writing (Letter to Editor, Complaint, Inquiry, Order) [5 marks], Analytical Paragraph writing based on chart/graph/clues [5 marks], and Integrated Grammar exercises (Tenses, Modals, Subject-Verb Concord, Reported Speech) [10 marks].
• Section C – Language through Literature (40 Marks): Reference to Context extracts (10 marks), Short Answer Questions from First Flight & Footprints Without Feet (12 marks), and Long Answer conceptual/theme-based questions (18 marks).

Important CBSE Questions with Answers & Marking Key

Mathematics Standard / Basic Model Question

Question: Find the zeroes of the quadratic polynomial p(x) = 6x² - 3 - 7x and verify the relationship between the zeroes and the coefficients. [3 Marks]

Solution & Marking Step:

1. Rearranging in standard form: p(x) = 6x² - 7x - 3 [0.5 Mark]
2. Factorization by splitting middle term:
   6x² - 9x + 2x - 3 = 0
   3x(2x - 3) + 1(2x - 3) = 0
   (2x - 3)(3x + 1) = 0
   Zeroes are α = 3/2 and β = -1/3. [1 Mark]
3. Verification with coefficients (a = 6, b = -7, c = -3):
   Sum of zeroes (α + β) = 3/2 + (-1/3) = (9 - 2)/6 = 7/6.
   -b/a = -(-7)/6 = 7/6. Hence, α + β = -b/a. [0.75 Mark]
   Product of zeroes (α · β) = (3/2) · (-1/3) = -3/6 = -1/2.
   c/a = -3/6 = -1/2. Hence, α · β = c/a. [0.75 Mark]

Science Model Competency Question

Question: An electric kettle rated 2 kW is operated on a 220 V supply line with a 5 A fuse. What will happen when the kettle is turned on? Justify your answer mathematically. [2 Marks]

Solution:

• Given: Power P = 2 kW = 2000 W; Operating Voltage V = 220 V; Fuse Rating = 5 A.
• Electric Current drawn by kettle: I = P / V = 2000 / 220 = 9.09 A. [1 Mark]
• Conclusion: The current drawn by the appliance (9.09 A) significantly exceeds the rated capacity of the 5 A fuse. As a result, the fuse wire will melt and break the circuit immediately due to the heating effect of electric current (Joule's heating), preventing damage. [1 Mark]

How to Prepare for the CBSE Class 10 2025-26 Board Exam

1. Thorough NCERT Mastery: Over 90% of direct conceptual questions in Science, Mathematics, and Social Science stem directly from NCERT textbook lines, exemplar problems, and in-text activities. Complete every NCERT exercise thoroughly.
2. Adopt Structured Step-Marking Strategies: CBSE evaluates board answers using step-wise marking schemes. Always state given values, formulae, intermediate calculation steps, SI units, and final boxed answers in numerical problems.
3. Practice Assertion-Reason & Case Study Sets: Since competency-based questions comprise 50% of the theory paper, dedicate regular weekly practice sessions to analyzing multi-concept case studies and paragraph-based questions.
4. Develop Strict Time Management: Simulate actual exam conditions with full-length 3-hour mock tests starting at least 4 months prior to board exams. Allocate 15 minutes for mandatory reading time, 150 minutes for writing, and 15 minutes for thorough revision.

Where to Practice More

Consistent practice with syllabus-accurate, board-level questions is the key differentiator between an average score and a 95%+ result. To streamline your preparation, generate customized chapter-wise question banks, practice competency-focused worksheets, and create full-syllabus mock papers tailored directly to the latest 2025-26 blueprint using Theorify QPTool (qptool.theorify.in). Start generating customized mock tests and master every chapter with official CBSE marking rubrics today.