CBSE Class 10 Science Syllabus 2025-26

Posted by ScientiaTutorials.in
Categories CBSE Syllabus 2025 - 2026
Date 18/09/2025

📘 CBSE Class 10 Science Syllabus 2025–26

1. Units & Marks Distribution

Unit No.	Unit Name	Marks
1	Chemical Substances – Nature and Behaviour	25
2	World of Living	25
3	Natural Phenomena	12
4	Effects of Current	13
5	Natural Resources	05
–	Internal Assessment (Periodic Test, Student Enrichment, Portfolio)	20
Total		100

2. Unit-wise Content Breakdown

Unit No.	Unit Name	Key Topics Covered
1	Chemical Substances – Nature and Behaviour	Chemical reactions, acids, bases, salts, metals & non-metals
2	World of Living	Life processes, reproduction, heredity, organization of living organisms
3	Natural Phenomena	Light, reflection, refraction, rainbow, dispersion
4	Effects of Current	Electricity, magnetism, electric current & its effects
5	Natural Resources	Importance, management, ecological impact of human activity

3. Internal Assessment (20 Marks)

Components	Details
Periodic Assessment	Regular unit tests
Student Enrichment	Practical activities, experiments
Portfolio	Projects, assignments, records

4. Detailed Chapter-wise Topics

Chapter	Chapter Name	Subtopics
1	Chemical Reactions and Equations	1.1 Chemical Equation, 1.2 Balanced Chemical Equation, 1.3 Implication of a Balanced Equation, 1.4 Types of Reactions
2	Acids, Bases, and Salts	2.1 Definition of H⁺ & OH⁻ ions, 2.2 General Properties, 2.3 Examples & Uses, 2.4 pH Scale, 2.5 Sodium Hydroxide
3	Metals and Non-metals	3.1 Properties, 3.2 Reactivity Series, 3.3 Ionic Compounds, 3.4 Metallurgical Processes, 3.5 Corrosion & Prevention
4	Carbon and Its Compounds	4.1 Covalent Bonding, 4.2 Versatile Nature, 4.3 Nomenclature, 4.4 Saturated vs Unsaturated, 4.5 Ethanol & Ethanoic Acid
5	Life Processes	5.1 Living Being, 5.2 Nutrition, 5.3 Respiration, 5.4 Transportation, 5.5 Excretion
6	Control and Coordination	6.1 Tropic Movement, 6.2 Plant Hormones, 6.3 Coordination in Animals, 6.4 Nervous System, 6.5 Reflex Actions, 6.6 Chemical Coordination, 6.7 Animal Hormones
7	Reproduction	7.1 Reproduction in Plants & Animals, 7.2 Reproductive Health, 7.3 Safe Sex vs HIV/AIDS, 7.4 Child Bearing & Women Health
8	Heredity and Evolution	8.1 Heredity, 8.2 Mendel’s Laws, 8.3 Sex Determination, 8.4 Evolution
9	Light – Reflection and Refraction	9.1 Reflection at Curved Surfaces, 9.2 Curved Mirror, 9.3 Refraction of Light
10	The Human Eye and the Colourful World	10.1 Human Eye, 10.2 Vision Defects & Correction, 10.3 Prism Refraction, 10.4 Dispersion, 10.5 Atmospheric Refraction, 10.6 Scattering
11	Electricity	11.1 Potential Difference & Current, 11.2 Ohm’s Law, 11.3 Resistance & Resistivity, 11.4 Series Combination, 11.5 Heating Effect, 11.6 Electric Power, 11.7 Relation P-V-I-R
12	Magnetic Effects of Electric Current	12.1 Magnetic Field, 12.2 Fleming’s Left Hand Rule, 12.3 Electromagnetic Induction, 12.4 Fleming’s Right Hand Rule, 12.5 DC & AC, 12.6 Domestic Circuit
13	Our Environment	13.1 Ecosystem, 13.2 Environmental Problems, 13.3 Ozone Depletion, 13.4 Waste Production & Solutions, 13.5 Biodegradable vs Non-biodegradable Substances

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