CBSE Class10 Science Term 1 Syllabus (2021-2022) (Revised) Download Now!

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 will be used for Internal Assessment (Term II+II).

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

a. Periodic Assessment will 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, concept maps and posters, presentations and enquiry-based scientific investigations.

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: CBSE Class 10 Science First Terms 2021-2022.

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

Theme Materials

Unit 1: Chemical Substances – Nature and Behavior

Chapter 1 Chemical reactions and equations

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

Chapter 2 Acids, Bases, and Salts

Acids and bases, salts: The definitions of H+, OHions and their general properties are given. Also, there is a discussion on pH (definition relating to logarithms not necessary), the importance of pH in daily life, preparation and use of Bleaching powder, Bleaching soda, Baking soda, Washing soap, and Plaster of Paris.

Chapter 3 Metals and Non-Metals

Nonmetals and Metals: Property of Metals and Non-Metals; Reactivity Series; Formation and properties ionic compounds.

Theme : The World of the Living

Unit II – World of Living

Chapter 6 Life processes

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

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


Practical should be done alongside the 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 carbonate Unit-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 with barium chloride solutions. Unit I: (Chapter-1)

3.A. 3.A.

(i) ZnSO4 (aq)

(iii) FeSO4(aq).



B.Arranging Zn (metals), Fe, Cu, and Al (metals), in decreasing order of reactivity, based on the above results. Unit I : (Chapter-3)

4.Research has shown that respiration produces carbon dioxide. Unit II: (Chapter-6)

5.Determination the focal lengths 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. Calculate the angle of incidence, angle refraction, and angle of emergence, then interpret the results. Unit-III:(Chapter-10)

7.Tracing the path the rays light through a glass prism. Unit-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


Science (086)

Maximum Marks: 80

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

Note: *Internal selection would be made.

Internal Assessment-Term I and II (10 marks each)

* Periodic Assessment03 marks

Multiple Assessment- 02 marks

Subject Enrichment (Practical Work) – 03 marks

Portfolio – 02 marks*