Welcome to our dedicated section for Class 10 Science (Code 086) syllabus updates! Stay on top of your studies with the latest 2025-26 curriculum released session-wise by CBSE. Whether you’re preparing for the upcoming academic year or planning your revision, we’ve made it easy for you to access and download the complete syllabus in PDF format.
| Syllabus | Source | Download |
|---|---|---|
| CBSE Class 10 Science Syllabus 2025-26 | CBSE | PDF Download |
| CBSE Class 10 Science Syllabus 2024-25 | CBSE | PDF Download |
| CBSE Class 10 Science Syllabus 2023-24 | CBSE | PDF Download |
SCIENCE (SUBJECT CODE 088)
CLASS – X (SESSION 2025-26)
Total Marks: 100 (Theory 80 Marks + Internal Assessment 20 Marks)
| Unit No. | Unit Name | Marks (80+20) |
|---|---|---|
| UNIT 1 | Chemical Substances-Nature and Behaviour | 25 |
| UNIT 2 | World of Living | 25 |
| UNIT 3 | Natural Phenomena | 12 |
| UNIT 4 | Effects of Current | 13 |
| UNIT 5 | Natural Resources | 05 |
| Internal assessment | 20 |
PRACTICALS
UNIT 1: Chemical Substances-Nature and Behaviour
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
2. Performing and observing the following reactions and classifying them into:
- Combination reaction
- Decomposition reaction
- Displacement reaction
- Double displacement reaction
- Action of water on quicklime
- Action of heat on ferrous sulphate crystals
- Iron nails kept in copper sulphate solution
- Reaction between sodium sulphate and barium chloride solutions
3. 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 theabove result.
4. Study of the following properties of acetic acid (ethanoic acid):
- Odour
- solubility in water
- effect on litmus
- reaction with Sodium Hydrogen Carbonate
5. Study of the comparative cleaning capacity of a sample of soap in soft and hard water.
UNIT 2: World of Living
6. Preparing a temporary mount of a leaf peel to show stomata.
7. Experimentally show that carbon dioxide is given out during respiration.
8. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides.
9. Identification of the different parts of an embryo of a dicot seed (pea, gram or red kidney bean).
UNIT 3: Natural Phenomena
10. Determination of the focal length of:
a) Concave mirror
b) Convex lens by obtaining the image of a distant object.
11. 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, angle of emergence andinterpret the result.
12. Tracing the path of the rays of light through a glass prism.
UNIT 4: Effects of Current
13. Studying the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance. Also plotting a graph between V and I.
14. Determination of the equivalent resistance of two resistors when connected in series and parallel.