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Content Curator | Updated On - Oct 31, 2025

CBSE Class 10 Science Syllabus for the academic year 2023-24 is released by CBSE. The annual exam will be of 80 marks and 20 marks weightage shall be for internal Assessment. The syllabus includes five units such as Chemical Substances, World of Living, Natural Phenomena, Effects of Current and Natural Resources.

The CBSE Class 10 syllabus provides a comprehensive overview of the subject, enabling students to plan their studies effectively. By having a clear understating of the full syllabus, students can create a study schedule that ensures they cover all the chapters and understand them thoroughly. 

Additionally, the Class 10th Science syllabus provides information about the weightage of each chapter, enabling students to prioritize their preparation for the upcoming CBSE Class 10 exam. In this article, we have provided the detailed syllabus along with the unit-wise topics and preparation tips to excel in the exam.

CBSE Class 10 Science Syllabus 2023-24: Course Structure

The table below provides the course structure of the CBSE Class 10 Science Syllabus 

Unit No.  Unit  Marks 
Chemical Substances-Nature and Behaviour 25 
II  World of Living 25 
III  Natural Phenomena 12
IV Effects of Current  13 
Natural Resources 05 
 

 Internal assessment

20
 

Total 

100

CBSE Class 10 Science Syllabus Unit-Wise

Given below are the details about CBSE Class 10 Science Syllabus (Unit-Wise)

Unit Topics
Unit 1: Chemical Substances - Nature and Behavior Chemical reactions
  • Chemical Reactions and How to Balance Chemical Reactions.
  • Types of Chemical Reactions.
Acids, bases, and salts:
  • Definitions, H+ & OH-ions.
  • Properties, Examples, and Uses.
  • Neutralization & Concept of pH scale.
Metals and nonmetals: 
  • Properties
  • Reactivity Series
  • Basic Metallurgical Processes 
  • Corrosion & its Prevention
Carbon compounds
  • Covalent Bond & Nature of Carbon
  • Homologous Series & Nomenclature
  • Chemical Properties
Unit 2: World of Living Life processes:
  • Concept of Living Beings
  • Concept of Life Processes in Plants & Animals
Control and coordination in animals and plants:
  • Tropic Movements & Plant Hormones.
  • Control & Coordination in Animals, Reflex Actions
  • Nervous System & Chemical Coordination.
  • Animal Hormones.
Reproduction:
  • Reproduction in Plants & Animals
  • Reproductive Health
Heredity and Evolution
  • Concepts of Heredity
  • Mendel’s Laws for the inheritance of traits.
Unit 3:Natural Phenomena Reflection & Refraction:
  • Reflection of light by curved surfaces
  • Refraction of light by spherical lens
  • Images formed by spherical mirrors and lenses
  • Mirror Formula & Lens Formula
Concept of Human Eye Refraction through a Prism.
Unit 4: Effects of Current Electric Current:
  • Potential Difference & Electric Current
  • Ohm’s Law & Concept of Resistance of Conductor
  • Series & Parallel Combination of Resistors with the application.
  • Heating Effects of current with applications
  • Electric Power & Interrelation between P, V, I, R.
Magnetic Effects of Current:
  • Magnetic field and Field due to a Current carrying Conductor
  • Force on current carrying conductor & Fleming’s Left Hand Rule,
  • Alternating Current
Unit 5: Natural Resources Our Environment:
  • Eco-system, 
  • Environmental problems, Ozone depletion, 
  • Waste Production and their Solutions.
  • Biodegradable and non-biodegradable substances.

Download CBSE Class 10 Science Syllabus 2023-24 PDF

CBSE Class 10 Science Practical Syllabus

Given below are the details of the CBSE Class 10 Science Practical Syllabus 

Unit No. Experiment

Unit 1

A. Finding the pH of the following samples by using pH paper/universal indicator:
  • Dilute Hydrochloric Acid
  • Dilute NaOH solution
  • Dilute Ethanoic Acid solution
  • Lemon juice
  • Water
  • Dilute Hydrogen Carbonate solution
B. Studying the properties of acids and bases (HCl & NaOH) on the basis of their reaction with
  • Litmus solution (Blue/Red)
  • Zinc metal
  • Solid sodium carbonate
Unit 1 Performing and observing the following reactions and classifying them into
  1. Combination reaction
  2. Decomposition reaction
  3. Displacement reaction
  4. Double displacement reaction
    1. Action of water on quicklime
    2. Action of heat on ferrous sulfate crystals
    3. Iron nails kept in copper sulfate solution
    4. Reaction between sodium sulfate and barium chloride solutions
Unit 1 Observing the action of Zn, Fe, Cu and Al metals on the following salt solutions
  • ZnSO4(aq)
  • FeSO4(aq)
  • CuSO4(aq)
  • Al2 (SO4)3(aq)

Arranging Zn, Fe, Cu and Al (metals) in the decreasing order of reactivity based on the above result.

Unit 4 Studying the dependence of potential difference (V) across a resistor on the current (I) passing through it and determining its resistance. Also plotting a graph between V and I.
Unit 4 Determination of the equivalent resistance of two resistors when connected in series and parallel.
Unit 2 Preparing a temporary mount of a leaf peel to show stomata.
Unit 2 Experimentally show that carbon dioxide is given out during respiration.
Unit 1 Study of the following properties of acetic acid (ethanoic acid): Unit- I
  • Odor
  • Solubility in water
  • Effect on litmus
  • Reaction with Sodium Hydrogen Carbonate
Unit 1 Study of the comparative cleaning capacity of a sample of soap in soft and hard water.
Unit 3 Determination of the focal length of Unit-III
  • Concave mirror
  • Convex lens

by obtaining the image of a distant object.

Unit 3 Tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. Measure the angle of incidence, angle of refraction, and angle of emergence and interpret the result.
Unit 2 Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides.
Unit 3 Tracing the path of the rays of light through a glass prism.
Unit 2 Identification of the different parts of an embryo of a dicot seed (Pea, gram or red kidney bean).

CBSE Class 10 Science Syllabus Internal Assessment (20 Marks)

  • Periodic Evaluation: 05 marks plus 05 marks
  • 05 points for subject enrichment (practical work)
  • Portfolio: five points

CBSE Class 10 Science Exam 2023-24: Preparation Tips

Here are some preparation tips for students to prepare for CBSE Class 10 Science exam for the upcoming session:

  • Fundamentals and basic concepts: Science is all about theories, concepts, and formulae. To comprehend Science and perform well in Exams, one must first understand its basic ideas and concepts.
  • Learning Procedure: Students must learn topics through the use of examples and applications. For each subject, read and comprehend the underlying theory. 
  • Every day, study: Studying for even a short period of time each day will help you get better results. Short bursts of study every day will trump long hours of preparation on exam night.
  • Practice: There is no other option than to practice. Science, like mathematics, necessitates regular practice to refine abilities and concepts. Use textbook examples, previous-year question papers, and sample question papers to practice. Download CBSE Class 10 Question Paper
  • Practicals: Instead of memorizing practicals, comprehend the methods, their requirements, and the outcomes. This will help students comprehend the practical and execute it quickly.
  • Time Management: One of the most important aspects of passing the CBSE Class 10 Science Exam is time management. Covering a large portion of the syllabus and then tackling the complete question paper in a specific time frame necessitates a strong grasp of time management. Plan the routine for exam week, including how to approach the questions offered, and proceed accordingly.

CBSE Class 10 Science Syllabus 2023-24 FAQs

Ques. Is the CBSE 2024 syllabus available?

Ans. The updated syllabus for class 10 board exams in 2024 has been released by the CBSE on the official website.

Ques. What is the internal evaluation format for the CBSE board exam for Class 10?

Ans. Three unit tests must be administered in every school by CBSE. The Board will receive the top two unit test scores out of the three, which will be calculated from the same set of 10 marks. The board score will be increased by 5 points for the practical classes, which must be completed throughout the academic year.

Ques. The CBSE Class 10 Science Syllabus has how many units?

Ans. The CBSE Class 10 Science Syllabus consists of 5 units, including Effects of Current, World of Living, Chemical Substances - Nature and Behaviour, Natural Phenomena, and Natural Resources.

Ques. How many total points will be awarded for the final test based on the CBSE Class 10 Science Syllabus?

Ans. According to the CBSE Class 10 Science Syllabus, there are 100 total marks assigned for the final exam, of which 20 are for internals and 80 are for theoretical and practicals.

*The article might have information for the previous academic years, please refer the official website of the exam.

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