Deleted Syllabus of Class 12 CBSE 2020-21 For All Subjects

Deleted CBSE Class 12 Syllabus (Physics Topics)

Chapter-1 Electric charges and fields

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

Chapter-3 Current Electricity

• Carbon resistors, color 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 ferromagnetic substances, with examples. Electromagnets and factors affecting their strengths, permanent magnets.

Chapter-7 Alternating Current

• power factor, wattless current.

Chapter 8 Electromagnetic Waves

• The basic idea of displacement current,

Chapter 9 Ray Optics and Optical Instruments

• Reflection of light, spherical mirrors,(recapitulation) mirror formula,
• Scattering of light – blue color of the 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 its 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

S No

Unit

The portion to be Reduced

1

Solid State

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

2

Solutions

Abnormal molecular mass, Van’t Hoff factor

3

Electrochemistry

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

4

Chemical Kinetics

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

5

Surface Chemistry

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

enzyme catalysis,

6

General Principles and Processes of Isolation of Elements

Entire unit

7

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).

8

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

9

Coordination Compounds

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

10

Haloalkanes and Haloarenes

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

11

Alcohols, Phenols and Ethers

uses with special reference to methanol and ethanol.

12

Aldehydes, Ketones and Carboxylic Acid

—

13

Amines

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

14

Biomolecules

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

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

15

Polymers

entire chapter

16

Chemistry in everyday life

entire chapter

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 evidence for biological evolution (paleontology, comparative anatomy, embryology, and molecular evidence); Darwin’s contribution, a 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 the environmental issue(s).

 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 colours/sizes of any plant.
• Controlled pollination – emasculation, tagging, and bagging.

UNIT

TOPICS REMOVED

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

Unit

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 organization- concept

Unit 6: Staffing

Staffing concept

as

a

part

of

Human

Resource

Management

Unit 7: Directing

barriers to effective communication, how to overcome the barriers

Unit 8: Controlling

Relationship between planning and controlling

Unit

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)

Unit

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.

Unit

Topics Deleted

Unit 7: Current challenges facing Indian Economy

Growth of Education Sector in India alternative farming – organic farming

Infrastructure: Energy

UNIT

TOPIC DELETED/REDUCED

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