CBSE Class 10 Science Syllabus for Academic Year 2020-2021

Class 10 is one of the most challenging years of a student’s life because the students will be appearing for their first board exams. CBSE syllabus for Class 10 Science for academic year 2020-2021 is compiled in accordance with the guidelines laid down by the Board. Students should go through the Class 10 Science syllabus to know the topics and sub-topics under science subjects. The syllabus also includes unit wise marking scheme, practicals, assignments and projects. The syllabus is arranged semester-wise, which helps students to plan their study schedule accordingly. CBSE has cut down the syllabus by 30% for this academic year 2020-21.

CBSE Class 10 students can access the latest Class 10 Science syllabus for the academic year 2020-2021 by clicking on the pdf link provided below.

Download Revised CBSE Class 10 Science Syllabus 2020-2021 PDF

In the syllabus pdf, students will find the unit names, chapters under each unit and subtopics under each chapter. Along with this they will also get the detailed practical syllabus of Class 10 science.

Unit-wise CBSE Class 10 Science Syllabus Marking Scheme

As students can see in the table below that the science syllabus is divided into 5 units with unit 1 carrying the higher weightage of 25 marks among all.

Unit No. Unit Marks
I Chemical Substances-Nature and Behaviour 26
II World of Living 23
III Natural Phenomena 12
IV Effects of Current 14
V Natural Resources 05
Total 80
Internal assessment 20
Grand Total 100

Students can also check the syllabus for all the subjects of Class 10 by clicking on CBSE Syllabus for Class 10 page.

Download CBSE Class 10 Deleted Portion of Science Syllabus PDF 2020-21

Students can also find the deleted portion of CBSE Class 10 Science syllabus 2020-21 from  below:

Deleted Portion (Theory)

● Under Unit I: Chemical Substances – Nature and Behaviour

  • Metals and Non-metals: Basic Metallurgical processes; Corrosion and its prevention
  • Carbon and its Compounds: Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes), difference between saturated hydro carbons and unsaturated hydrocarbons. Chemical properties of carbon compounds (combustion, oxidation, addition and substitution reaction). Ethanol and Ethanoic acid (only properties and uses), soaps and detergents.

● Under Unit II: World of Living

  • Control and co-ordination in animals and plants: Tropic movements in plants; Introduction of plant hormones; Control and co-ordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical co-ordination: animal hormones.
  • Heredity and Evolution: Basic concepts of evolution.

● Under Unit III: Natural Phenomena

The Human Eye and the Colourful World: Functioning of a lens in Human eye, defects of vision and their corrections, applications of spherical mirrors and lenses.

● Under Unit IV: Effects of Current

Magnetic Effects of Electric Current: Electric Generator, Direct current. Alternating current: frequency of AC. Advantage of AC over DC. Domestic electric circuits.

● Under Unit V: Natural Resources

Sources of energy: Different forms of energy, conventional and non- conventional sources of energy: Fossil fuels, solar energy; biogas; wind, water and tidal energy; Nuclear energy. Renewable versus non-renewable sources of Energy.

● Deleted Practicals

1. 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

2. Determination of the equivalent resistance of two resistors when connected in series and parallel.
3. Preparing a temporary mount of a leaf peel to show stomata.
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.
6. Finding the image distance for varying object distances in case of a convex lens and drawing corresponding ray diagrams to show the nature of image formed.
7. Identification of the different parts of an embryo of a dicot seed (Pea, gram or red kidney bean).

● Deleted Internal Assessment Topics

Management of natural resources: Conservation and judicious use of natural resources.

Forest and wild life; Coal and Petroleum conservation. Examples of people’s participation for conservation of natural resources.

Big dams: advantages and limitations; alternatives, if any. Water harvesting. Sustainability of natural resources.

CBSE Practical Syllabus for Class 10 Science

As internal assessment consist of 20 marks so students must not ignore the importance of practicals. Along with the theory they should also focus on practicals. This will not only help them in scoring high marks but also understanding the theory concepts through practicals and experiments. So, here we have provided the CBSE Class 10 Science Practical syllabus. Go through it and the experiment list. Students can also download the CBSE Class 10 Science lab Manual. It provides an idea on new science projects, list of experiments and activities.

List of Class 10 Science Experiments

1. 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:

A. Combination reaction

B. Decomposition reaction

C. Displacement reaction

D. Double displacement reaction

i) Action of water on quicklime
ii) Action of heat on ferrous sulphate crystals
iii) Iron nails kept in copper sulphate solution
iv) 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 the above result.

4. 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.

5. Experimentally show that carbon dioxide is given out during respiration.

6. Determination of the focal length of:

  • Concave mirror
  • Convex lens by obtaining the image of a distant object.

7. 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 and interpret the result.

8. Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides.

9. Tracing the path of the rays of light through a glass prism.

By now students must have got to know the science syllabus. To get the detailed Maths Syllabus visit the CBSE Syllabus for Class 10 Maths link. Learn Maths & Science in an interactive and fun-loving way with BYJU’S App/Tablet.

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