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CBSE Notes Class 10 Science - 2025-26

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Science Notes for All Chapters Class 10 - FREE PDF Download

Class 10 Science Notes are essential study material for students preparing for board exams. These Class 10 Science Notes CBSE are carefully designed according to the latest NCERT syllabus to help students understand concepts clearly and score high marks in the CBSE Class 10 board examination.

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To help students develop an effective study strategy, we provide chapter-wise Science Class 10 notes that simplify complex topics into easy explanations, key points, and exam-focused summaries. Students can revise quickly, strengthen conceptual clarity, and improve answer-writing skills using these well-structured notes.


Access Chapter-Wise Class 10 Science Notes PDF

The Class 10 Science Notes PDF cover all important chapters from the NCERT textbook, including:


Chapter-wise Links for Science Class 10 Notes

CBSE Class 10 Science Weightage 2025–26


Unit

Topic

Marks

I

Chemical Substances: Nature and Behaviour

25

II

World of Living

25

III

Natural Phenomena

12

IV

Effects of Current

13

V

Natural Resources

5

Total

80

Internal Assessment

20

Grand Total

100


Key Chapters in Class 10 Science: Important Topics for Revision

For effective board exam preparation, students should focus on the most important concepts from each chapter. Below is a structured table highlighting the key chapters and their major focus areas for quick revision.


S. No

Chapter Name

Important Topics for Revision

1

Chemical Reactions and Equations

Types of chemical reactions, Balancing equations, Corrosion, Rancidity

2

Acids, Bases, and Salts

Properties, Chemical reactions, pH scale, Uses in daily life

3

Metals and Non-Metals

Physical & chemical properties, Reactivity series, Ionic compounds

4

Carbon and Its Compounds

Covalent bonding, Homologous series, Ethanol & Ethanoic acid

5

Life Processes

Nutrition, Respiration, Transportation, Excretion

6

Control and Coordination

Nervous system, Hormones, Plant hormones

7

How Do Organisms Reproduce?

Asexual reproduction, Sexual reproduction, Human reproduction

8

Heredity

Mendel’s experiments, Laws of inheritance, Traits & variations

9

Light: Reflection and Refraction

Reflection, Refraction, Image formation by mirrors & lenses

10

The Human Eye and the Colourful World

Structure of eye, Defects of vision, Dispersion & scattering

11

Electricity

Electric current, Ohm’s Law, Electric power, Heating effect

12

Magnetic Effects of Electric Current

Electromagnetism, Right-hand rule, Electric motor

13

Our Environment

Ecosystem, Food chains, Ozone depletion, Environmental issues


Benefits of CBSE Class 10 Science Notes PDF

Using CBSE Class 10 Science Notes PDF can make your board exam preparation more organised and efficient. These notes help students revise important concepts from Physics, Chemistry, and Biology in a structured and simplified manner.


  • Quick Revision Tool: Summarises key concepts, definitions, diagrams, formulas, and reactions for faster revision.

  • Chapter-wise Organisation: Covers all chapters as per the latest CBSE syllabus for systematic preparation.

  • Saves Study Time: Eliminates the need to go through lengthy textbook explanations repeatedly.

  • Improves Concept Clarity: Simplified explanations make complex scientific concepts easier to understand.

  • Easy Accessibility: PDF format allows students to study anytime on mobile, tablet, or laptop.

  • Supports Last-minute Preparation: Ideal for quick revision before class tests, pre-boards, and final exams.

  • Enhances Answer Writing: Helps students frame accurate and structured answers in board exams.

  • Boosts Confidence: Clear summaries reduce confusion and improve exam readiness.


These benefits make CBSE Class 10 Science Notes PDF a valuable resource for focused and effective board exam preparation.


Key Features of Class 10 Science Textbook & Notes

Understanding the structure and strengths of the Class 10 Science textbook and revision notes helps students prepare more effectively for the board exam. Below are the key features that make them reliable study resources:


  • Syllabus-Aligned Content: Strictly based on the latest CBSE Class 10 Science syllabus.

  • Conceptual Clarity: Clear explanations of Physics, Chemistry, and Biology topics for strong fundamentals.

  • Chapter-wise Structure: Systematically organised into units and chapters for easy navigation.

  • Diagrams and Illustrations: Well-labelled diagrams to improve understanding and retention.

  • Important Definitions and Laws: Key terms, laws, and principles highlighted for quick revision.

  • Chemical Equations and Formulas: Balanced equations and formulas presented clearly for practice.

  • Activity-based Learning: Includes experiments and practical-based questions to strengthen application skills.

  • Exam-oriented Preparation: Covers important question types such as MCQs, short-answer, and long-answer questions.

  • Quick Revision Notes: Summarised key points and important concepts for last-minute preparation.

  • Real-life Applications: Connects scientific concepts to everyday examples for better understanding.


These features make the Class 10 Science textbook and notes an essential combination for building strong concepts and achieving high scores in the CBSE board examination.


Related Important Links for Science Class 10

Along with this, students can also download additional study materials provided by Vedantu for Science Class 10–


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FAQs on CBSE Notes Class 10 Science - 2025-26

1. What are the benefits of using Class 10 Science notes for board exams?

Class 10 Science notes help in quick revision of important concepts, diagrams, formulas, and chemical reactions. They simplify complex topics and make last-minute preparation more effective.

2. Are Class 10 Science notes enough to score high marks?

Science notes are excellent for revision, but students should also practise NCERT textbook questions, exemplar problems, and previous year question papers for complete preparation.

3. Do Class 10 Science notes cover Physics, Chemistry, and Biology?

Yes, well-prepared Class 10 Science notes cover all three sections—Physics, Chemistry, and Biology—according to the latest CBSE syllabus.

4. How can I revise Science quickly before the board exam?

Focus on key definitions, diagrams, chemical equations, laws, and important concepts from each chapter. Use concise notes and solve a few practice questions from each unit.

5. Which chapters are most important in Class 10 Science?

Chapters like Chemical Reactions and Equations, Carbon and Its Compounds, Electricity, Magnetic Effects of Electric Current, Light, and Heredity are considered high-weightage and scoring.

6. How important are diagrams in Class 10 Science exams?

Diagrams are very important, especially in Biology and Physics. Properly labelled diagrams can help secure full marks in descriptive answers.

7. Is NCERT enough for Class 10 Science board exams?

Yes, most CBSE board exam questions are based directly or indirectly on NCERT textbooks. Thorough NCERT practice is essential.

8. How many times should I revise Science notes before the exam?

It is recommended to revise Science notes at least 2–3 times before the board exam to ensure strong concept retention and better confidence.

9. Can PDF Science notes help in last-minute preparation?

Yes, PDF notes are convenient and accessible anytime, making them ideal for quick revision before exams.

10. How can I score above 90 in Class 10 Science?

Focus on understanding concepts clearly, practise diagrams and chemical equations, revise regularly, and solve sample papers under timed conditions.