Deleted CBSE Class 12 Syllabus For All Subjects

Deleted CBSE Class 12 SyllabusDeleted CBSE Class 12 Syllabus For All Subjects: On July 7, HRD Minister Ramesh Pokhriyal announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 for classes 9 to 12 because of the reduction in classroom teaching time due to the Covid-19 pandemic and lockdown.

To prepare properly for CBSE Class 12, you should know the latest CBSE Class 12 Syllabus for All subjects. You should know that,

Here we are providing you with the complete Deleted Syllabus for CBSE Class 12. So that you will have an idea about the topics which should exclude from the study.

Deleted Syllabus For CBSE Class 12 For All Subjects

CBSE designs Class 12 Syllabus to provide the best curriculum to the students. Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.

You should check the Deleted 12th Syllabus to know the topics to exclude while studying. You can check the deleted CBSE 12th Syllabus for all subjects from below.

Deleted CBSE Class 12 Physics Syllabus

Here you can check and download the deleted 12th Physics Syllabus.

Deleted CBSE Class 12 Physics Topis

Chapter-1 Electric charges and fields

  • uniformly charged thin spherical shell (field inside and outside).

Chapter-3 Current Electricity

  • Carbon resistors, colour code for carbon resistors; series and parallel combinations of resistors

Chapter-4 Moving Charges and Magnetism

  • Cyclotron

Chapter-5 Magnetism and Matter

  • magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis, torque on a magnetic dipole (bar magnet) in a uniform magnetic field;
  • Para-, dia- and ferro – magnetic substances, with examples. Electromagnets and factors affecting their strengths, permanent magnets.

Chapter-7 Alternating Current

  • power factor, wattless current.

Chapter 8 Electromagnetic Waves

  • Basic idea of displacement current,

Chapter 9 Ray Optics and Optical Instruments

  • Reflection of light, spherical mirrors,(recapitulation) mirror formula ,
  • Scattering of light – blue colour of sky and reddish appearance of the sun at sunrise and sunset.
  • resolving power of microscope and astronomical telescope, polarisation, plane polarised light, Brewster’s law, uses of plane polarised light and Polaroids.

Chapter-11 Dual Nature of radiation and matter

  • Davisson-Germer experiment

Chapter 13 Nuclei

  • Radioactivity, alpha, beta and gamma particles/rays and their properties; radioactive decay law, half life and mean life
  • binding energy per nucleon and its variation with mass number

Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits

  • Zener diode and their characteristics, zener diode as a voltage regulator.

Practicals: No investigatory project and Activity to be demonstrated 8 experiments ( clubbed based on skills ) in place of 12

Deleted CBSE Class 12 Chemistry Syllabus

Here you can check and download the deleted 12th Chemistry Syllabus.

S No


Portion to be Reduced


Solid State

Electrical and magnetic properties. Band theory of metals, conductors, semiconductors and insulators and n and p type semi conductors.



Abnormal molecular mass, Van’t Hoff factor



Lead accumulator, fuel cells, corrosion, law of electrolysis (elementary idea), dry cell- electrolytic cells and Galvaniccells,


Chemical Kinetics

Concept of collision theory (elementary idea, no mathematical treatment), activation energy, Arrhenius equation.


Surface Chemistry

emulsion – types of emulsions, catalysis: homogenous and heterogeneous, activity and selectivity of solid catalysts;

enzyme catalysis,


General Principles and Processes of Isolation of Elements

Entire unit


p-Block Elements

Preparation and properties of Phosphine, Sulphuric Acid: industrial process of manufacture, Oxides of Nitrogen (Structure only); Phosphorus – allotropic forms, compounds of Phosphorus: Preparation and properties of Halides and Oxo acids (elementary idea only).


d and f Block Elements

Chemical reactivity of lanthanoids, Actinoids -Electronic configuration, oxidation states and comparison with lanthanoids. Preparation and properties of KMnO4 and K2Cr2O7


Coordination Compounds

Structure and stereoisomerism, importance of coordination compounds (in qualitative analysis, extraction of metals and biological system).


Haloalkanes and Haloarenes

Uses and environmental effects of -dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT.


Alcohols, Phenols and Ethers

uses with special reference to methanol and ethanol.


Aldehydes, Ketones and Carboxylic Acid



Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry.



Oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen), importance of carbohydrates.

Vitamins– classification and functions. Enzymes. Hormones – Elementary idea excluding structure.



entire chapter


Chemistryin Everydaylife

entire chapter

Deleted CBSE 12th Practical Syllabus

The following portions should be considered deleted.

  • Surface Chemistry
    • Preparation of one lyophilic and one lyophobic sol Lyophilic sol – starch, egg albumin and gum Lyophobic sol – aluminium hydroxide, ferric hydroxide, arsenous
    • Dialysis of sol-prepared in (a)above.
    • Study of the role of emulsifying agents in stabilizing the emulsion of different
  • Chemical Kinetics
    • Effect of concentration and temperature on the rate of reaction between Sodium Thiosulphate and Hydrochloric
    • Study of reaction rates of any one of the following:
      • Reaction of Iodide ion with Hydrogen Peroxide at room temperature using different concentration of
      • Reaction between Potassium Iodate, (KIO3) and Sodium Sulphite: (Na2SO3)using starch solution as indicator (clock reaction).
  • Thermo chemistry Any one of the following experiments
    • Enthalpy of dissolution of Copper Sulphate or Potassium
    • Enthalpy of neutralization of strong acid (HCI) and strong base(NaOH).
    • Determination of enthaply change during interaction (Hydrogen bond formation) between Acetone and
  • Electrochemistry Variation of cell potential in Zn/Zn 2+|| Cu2+/Cu with change in concentration of electrolytes (CuSO4 or ZnSO4) at room
  • Preparation of Organic Compounds Preparation of any one of the following compounds
    • Acetanilide
    • Di-benzal Acetone
    • p-Nitroacetanilide
    • Aniline yellow or 2 – Naphthol Anilinedye

Deleted CBSE 12th Maths Syllabus

Here check the deleted CBSE 12th Maths Syllabus

deleted CBSE 12th Maths Syllabus

Deleted CBSE 12th Biology Syllabus 2020

Here check the deleted CBSE 12th Biology Syllabus.

Unit-VI Reproduction

Chapter-1: Reproduction in Organism

  • Reproduction, a characteristic feature of all organisms for continuation of species; modes of reproduction – asexual and sexual reproduction; asexual reproduction – binary fission, sporulation, budding, gemmule formation, fragmentation; vegetative propagation in plants.

Unit-VII Genetics and Evolution

Chapter-7: Evolution

  • Origin of life; biological evolution and evidences for biological evolution (paleontology, comparative anatomy, embryology and molecular evidences); Darwin’s contribution, modern synthetic theory of evolution; mechanism of evolution – variation (mutation and recombination) and natural selection with examples, types of natural selection; Gene flow and genetic drift; Hardy – Weinberg’s principle; adaptive radiation; human evolution.

Unit-VIII Biology and Human Welfare

Chapter 9: Strategies for Enhancement in Food Production

  • Animal husbandry, Plant breeding, tissue culture, single cell protein.

Under Unit-X Ecology and Environment

Chapter-14: Ecosystem

  • Ecosystems: Patterns, components; productivity and decomposition; energy flow; pyramids of number, biomass, energy; nutrient cycles (carbon and phosphorous); ecological succession; ecological services – carbon fixation, pollination, seed dispersal, oxygen release (in brief).

Chapter 16: Environmental Issues

  • Air pollution and its control; water pollution and its control; agrochemicals and their effects; solid waste management; radioactive waste management; greenhouse effect and climate change impact and mitigation; ozone layer depletion; deforestation; exemplifying case study as success story addressing environmental issue(s).

Deleted CBSE 12th Biology Practical Syllabus

 A: List of Experiments

  • Study the presence of suspended particulate matter in air at two widely different sites.
  • Study the plant population density by quadrat method.
  • Study the plant population frequency by quadrat method.

B. Study/Observer of the following (spotting)

  • Pollen germination on stigma through a permanent slide or scanning electron micrograph.
  • Mendelian inheritance using seeds of different colour/sizes of any plant.
  • Controlled pollination – emasculation, tagging and bagging.

Deleted CBSE Class 12 English Syllabus

Here you can check and download deleted CBSE 12th English Core and Elective Syllabus.

Deleted CBSE Class 12 English Core Syllabus


Note Making & Summarizing



  • Poets and Pancakes
  • A Roadside Stand
  • The Interview
  • Going Places


  1. The Tiger King
  2. Journey to the end of the Earth
  3. Memories of Childhood


  • Poster making
  • Business or official letters (for making enquiries, registering complaints, asking for and giving information, placing orders and sending replies)
  • Speech, Debate

Deleted CBSE Class 12 English Elective Syllabus



Literature-Short Story

1. Tomorrow

2. One cm.

Literature- Poetry

1. Blood

Literature – Non Fiction

1. Science Fiction

2. Argumentative Indian

Literature – Drama

1. Broken Images

Deleted CBSE Class 12 Accountancy Syllabus

Here you can check and download the deleted 12th Accountancy Syllabus.

Part A: Accounting for Not-for-Profit Organizations, Partnership Firms and Companies

Unit 2: Accounting for Partnership Firms

Accounting for Partnership firms – Reconstitution and Dissolution.

  • Admission of a partner – adjustment of capital accounts and preparation of balance sheet.
  • Retirement and death of a partner: adjustment of capital accounts. Preparation of loan account of the retiring
  • Preparation of deceased partner’s capital account and his executor’s

Unit – 3 Accounting for Companies

Accounting for Debentures

  • Redemption of debentures-Methods: Lump sum, draw of

Project Work:

From session 2020-21 onwards, there would be only ONE project (specific) to be prepared.

Note: Kindly refer to the related Guidelines published by the CBSE.

Deleted CBSE Class 12 Business Studies Syllabus

Here you can check and download the deleted 12th Business Studies Syllabus.

Part A: Principles and Functions of Management


Topic deleted

Unit 3: Business Environment

Demonetization – concept

Impact of Government policy changes on business with special reference to liberalization, privatization and globalization in India

Unit 4: Planning

Single use and standing plans. Objectives, Strategy, Policy, Procedure, method Rule, budget and Programme

Unit 5: Organising

Topics Deleted

Formal and informal organisation- concept

Unit 6: Staffing

Staffing concept








Unit 7: Directing

barriers to effective communication, how to overcome the barriers

Unit 8: Controlling

Relationship between planning and controlling

Part B: Business Finance and Marketing


Topic deleted

Unit 11: Marketing

Physical Distribution – components and channels of distribution

Unit 12: Consumer Protection

Consumer Protection: importance

Consumer awareness – Role of consumer organizations and Non-Governmental Organizations (NGOs)

Deleted CBSE Class 12 Economics Syllabus

Here you can check and download the deleted 12th Economics Syllabus.

Part A: Introductory Macroeconomics


Topics Deleted

Unit 2: Money and Banking

Control of Credit through Bank Rate, CRR, SLR, Repo Rate and Reverse Repo Rate, Open Market Operations, Margin requirement.

Unit 5: Balance of Payments

Balance of payments deficit-meaning. Determination of exchange rate in a free market.

Part B: Indian Economic Development


Topics Deleted

Unit 7: Current challenges facing Indian Economy

Growth of Education Sector in India alternative farming – organic farming

Infrastructure: Energy

Deleted Revised CBSE Class 12 Home Science Syllabus

Here you can check and download the deleted 12th Home Science Syllabus.



UNIT II: Nutrition, Food Science and Technology

Catering and Food Service Management

UNIT III: Human Development and Family Studies

Special Education and support services

UNIT IV: Fabric and Apparel

Production and Quality control in the Garment Industry

UNIT V: Resource management

Human Resource Management

UNIT VI: Communication and Extension

Media Management, Design and Production

We have covered the detailed guide on Deleted CBSE Class 12 Syllabus For All Subjects 2020. Feel free to ask us any questions in the comment section below.

Leave a Comment