Due to the pandemic COVID-19, School level education has suffered a lot, in view to reduce some burden of school students, CBSE has deleted some portion of class 10th course for the purpose of the annual examination, though it has been advised by CBSE to read this deleted portion along with the revised syllabus. (Deleted Syllabus of Class 10th for Academic Year 2020-21)
Here is details of this deleted syllabus of class 10th for Academic Year 2020-21 by CBSE.
Mathematics deleted topics – Class 10th
| Unit | Topic Deleted/Reduced |
| UNIT I-NUMBER SYSTEMS | |
| REAL NUMBERS | Euclid’s division lemma |
| UNIT II-ALGEBRA | |
| POLYNOMIALS | Statement and simple problems on division algorithm for polynomials with real coefficients. |
| PAIR OF LINEAR EQUATIONS IN TWO VARIABLES | cross multiplication method |
| QUADRATIC EQUATIONS | Situational problems based on equations reducible to quadratic equations |
| ARITHMETIC PROGRESSIONS | Application in solving daily life problems based on sum to n terms |
| UNIT III-COORDINATE GEOMETRY | |
| COORDINATE GEOMETRY | Area of a triangle |
| UNIT IV-GEOMETRY | |
| TRIANGLES | Proof of the following theorems are deleted The ratio of the areas of two similar triangles is equal to the ratio of the squares of their corresponding sides. In a triangle, if the square on one side is equal to sum of the squares on the other two sides, the angle opposite to the first side is a right angle. |
| CIRCLES | No deletion |
| CONSTRUCTIONS | Construction of a triangle similar to a given triangle. |
| UNIT V- TRIGONOMETRY | |
| INTRODUCTION TO TRIGONOMETRY | motivate the ratios whichever are defined at 0o and 90o |
| TRIGONOMETRIC IDENTITIES | Trigonometric ratios of complementary angles |
| HEIGHTS AND DISTANCES | No deletion |
| UNIT VI-MENSURATION | |
| AREAS RELATED TO CIRCLES | Problems on central angle of 120° |
| SURFACE AREAS AND VOLUMES | Frustum of a cone |
| UNIT VI-STATISTICS & PROBABILITY | |
| STATISTICS | Step deviation Method for finding the mean Cumulative Frequency graph |
| PROBABILITY | No deletion |
Science deleted topics – Class 10th
| Unit | Topic Deleted/Reduced |
| 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. |
| 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 |
| Unit III: Natural Phenomena | The Human Eye and the Colourful World: Functioning of a lens inHuman eye, defects of vision and their corrections, applications of spherical mirrors and lenses. |
| 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. |
| 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: oDilute Hydrochloric AcidoDilute NaOH solutionoDilute Ethanoic Acid solutionoLemon juiceoWateroDilute 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): oOdourosolubility in wateroeffect on litmusoreaction 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). |
| Internal Assessment | 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. |
Social Science deleted topics – Class 10th
| Unit | Topic Deleted/Reduced |
| UNIT 1: INDIA AND THE CONTEMPORARY WORLD –II (HISTORY) | |
| Section 2 : Livelihoods, Economies and Societies | |
| NOTE-ANY ONE OUT OF THESE TWO CHAPTERS (CH-3/CH4) Chapter 3: The Making of a Global World Chapter 4: The Age of Industrialisation | The chosen Chapter to be assessed in the Periodic Tests and not in Board Examination. |
| Section 3: Everyday Life, Culture and Politics | |
| Chapter 5: Print Culture and the Modern World | Complete Chapter |
| UNIT 2: CONTEMPORARY INDIA –II (GEOGRAPHY) | |
| Chapter 2: Forest and Wildlife | Complete Chapter |
| Chapter 3: Water Resources | Complete Chapter except for Map Items which will be assessed in the Examination |
| Chapter 5: Mineral and Energy Resources | Complete Chapter except for Map Items which will be assessed in the Examination |
| UNIT 3: DEMOCRATIC POLITICS –II (POLITICAL SCIENCE) | |
| Chapter 3: Democracy and Diversity | Complete Chapter |
| Chapter 4: Gender, Religion and Caste | Complete Chapter |
| Chapter 5: Popular Struggles and Movements | Complete Chapter |
| Chapter 8: Challenges to Democracy | Complete Chapter |
For Deleted syllabus of English, Hindi & Computer Science. Kindly visit CBSE Revised Syllabus.
Source – CBSE
