CBSE Class 10 Science Term I Syllabus 2021-2022 (Revised)

Here is the CBSE Class 10th Science Syllabus 2021-2022. You can download the revised/rationalized syllabus and prepare for the Term 1 Board Exam, which will be held in November-December 2020.

The CBSE Class 10 Science Revised syllabus for the current academic session 2021-2022 has been released by the board via its official website. The Science syllabus has been divided by the Board into two terms: Term 1 and 2. Here is the CBSE Class 10 Science Curriculum for Term 1. This revised syllabus must be read by students before they begin preparations for the CBSE Class 10 Board Exam 2021-2022. The Term 1 Exam will take place in November-December.

General Instructions

1. The Theory Examinations (Term II+II) total will be 80 marks. 20 marks weightage shall go to Internal Assessment (Term II+II).

2. Internal Assessment – Maximum Marks 10, for each Term

a. There will be a periodic assessment that would include:

The school will conduct three periodic tests during the whole session. The average of the two periodic tests/marks for the best periodic Tests conducted during the Term will be considered.

* Different methods of assessment depending on the needs of the class dynamics or curriculum transaction. These include: short tests, oral tests, quizzes, quizzes, quizzes, concept maps and posters, presentations, inquiry-based scientific investigations, etc.

b. b. Subject enrichment should be continued throughout the year through practical/laboratory work. The student should keep a record of this. Continuous assessment should be done in practical. You must complete all practicals as listed in the syllabus. c. The student must prepare a portfolio. This would include sample work from students.

Course Structure for CBSE Class 10 Science First Terms 2021-2022

Units   Marks
I Chemical Substances-Nature and Behaviour: Chapter 1, 2 and 3 16
II World of Living: Chapter 6 10
III Natural Phenomena: Chapter 10 and 11 14
  Total 40
  Internal Assessment 10
  Total 50


Theme: Materials

Unit I: Chemical Substances in Nature and Behaviour

Chapter 1 Chemical reactions and equations

Chemical reactionsChemical equation, Balanced chemicals equation, Implications of a balanced chemical equation. Types of chemical reactions: combination.

Chapter 2 Acids, Bases, and Salts

Acids, bases, and saltsThey are defined in terms of furnishing H+ and OHions.

Chapter 3 Metals and Non-Metals

Metals and non-metalsProperties of non-metals and metals; Reactivity series; Formation of and properties of ionic compound.

Theme: The World of the Living

Unit II: The World of Living

Chapter 6 Life Processes

Life processes: The ‘Living Being. The basic concept of nutrition, respiration and transport in animals and plants.

Theme: How Things Work

Unit III: Natural Phenomena

Chapter 10 Light – Reflection, Refraction

Reflection of light from curved surfaces; Images created by spherical lenses, centre of curvature principal axis, principal focal length, principal focus, focal distance, mirror formula (Derivation is not required), magnification

Refraction; Laws and refractive index.

Refraction of light using spherical optics; Image formed by the spherical lenses. Lens formula (Derivation is not required). Magnification.

The power of a lens.

Chapter 11 The human eye and the colourful world

Application in everyday life: Refraction of light through prisms, dispersion and scattering of light


It is important to practice the theories taught in theory classes.



1.A. 1.A.

(i) Dilute Hydrochloric Acid

(iii) Dilute NaOH solution

(iii). Dilute Ethanoic Acid solution

(iv) Lemon juice

(v) Water

(vi) Dilute Hydrogen Carbonate solution

B. Studying the properties of acids & bases (HCl & NOH) based on their reaction with:

  1. A) Litmus solution (Blue/Red).
  2. b) Zinc Metal
  3. c) Solid sodium carbonateUnit-I (Chapter-2)

2. Perform and observe the following reactions, and then classify them into:

A.Combination reaction B. Decomposition reaction C. Displacement reaction D. Double displacement reaction

(i) Water action on quicklime

(iii) Heat action on ferrous sulfurate crystals

(iii). Iron nails in copper sulphate solution

(iv) Reaction of sodium sulphate solutions and barium chloride solutionsUnit-I (Chapter-1)

3.A. 3.A.

(i) ZnSO4 (aq)

(iii) FeSO4 (aq)



B.Arranging Zn (metals), Fe, Cu, and Al (metals) according to the below result.Unit-I: (Chapter-3)

4. Experiments have shown that carbon dioxide is released during respiration.Unit-II (Chapter-6)

5.Determination the focal length of (i), Concave mirror, and (ii), Convex lenses by taking an image of distant objects.Unit-III (Chapter-10)

6. Determine the angle of incidence of a ray passing through a rectangular glass slab. Interpret the results by measuring the angle of incidence, angle de refraction and angle of emergence.Unit-III:(Chapter-10)

7.Tracing the light’s path through a glass prismUnit-III:(Chapter-11)


* Science-Text book for class Class X- NCERT Publication

* Assessment of Practical Skills for Science- Class X- CBSE Publication

* Laboratory Manual-Science Class X, NCERT Publication

* Exemplar Problems ClassX – NCERT Publication

Assessment Areas (Theory), 2021-22

(Class X).

Science (086)

Maximum Marks: 80


Competencies Marks
Demonstrate Knowledge and Understanding 46%
Application of Knowledge/Concepts 22%
Analyze, Evaluate and Create 32%


Note:  ·Internal choice would be provided.

Internal Assessment – Term I and II (10 Marks each)  

· Periodic Assessment – 03 marks

· Multiple Assessment – 02 marks

· Subject Enrichment (Practical Work) – 03 marks

· Portfolio – 02 marks·

You may also check the old or combined syllabus of CBSE Class 10 Science to understand the changes the board has made to the syllabus and know how topics have been bifurcated for the two terms. Link to the old syllabus is given below: