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Here is the deleted syllabus of Class 11 Chemistry CBSE 2020-21:

• Some Basic Concepts of Chemistry : Nature of matter,  laws  of chemical  combination,  Dalton’s  atomic theory: concept of elements, atoms and molecules
• Structure of Atom : Thomson’s model and its limitations, Rutherford’s model and its limitations and Discovery of Electron, Proton and Neutron, atomic number, isotopes and isobars.
• Classification of Elements and Periodicity in Properties : Significance of classification, brief history of the development of periodic table
• States of Matter: Gases and Liquids : Liquid  State-  vapour pressure,  viscosity  and surface  tension  (qualitative  idea only, no mathematical derivations), liquefaction of gases, critical temperature, kinetic energy and molecular  speeds  (elementary  idea),
• Chemical Thermodynamics: Heat capacity and specific heat capacity, Criteria for equilibrium
• Equilibrium : Hydrolysis of salts (elementary idea), Henderson Equation
• Redox Reactions: Applications of redox reactions
• Hydrogen: Preparation, properties and uses of hydrogen, hydrogen peroxide – preparation, reactions and structure and use;
• s-Block Elements: Calcium Oxide and Calcium Carbonate and their industrial uses, biological importance of Magnesium and Calcium. Preparation and Properties of Some Important Compounds: Sodium Carbonate, Sodium Chloride,  Sodium Hydroxide and Sodium Hydrogen carbonate, Biological importance of Sodium and Potassium.
• Some p-Block Elements : Some important compounds: Borax, Boric acid, Boron Hydrides, Aluminium: Reactions with acids and alkalis, uses. Carbon: uses of some important compounds: oxides. Important compounds of Silicon and a few uses: Silicon Tetrachloride, Silicones, Silicates and Zeolites, their uses.
• Organic Chemistry: Some Basic Principles and Techniques: Methods of purification, qualitative and quantitative analysis
• Hydrocarbons: Free radical mechanism of halogenation, combustion and pyrolysis.
• Environmental Chemistry: Entire chapter is deleted.

Here is the deleted syllabus of CBSE class 11 Physics 2020-21:

• Chapter–1: Physical World : Physics-scope and excitement; nature of physical laws; Physics, technology and society
• Chapter-3: Motion in a straight line : Frame of reference, Motion in a straight line: Position-time graph, speed and velocity
• Chapter-5 Laws of Moti: Newton’s first law of motion; Intuitive concept of force, Inertia, momentum and  Newton’s second law of motion; impulse; Newton’s third law of motion
• Chapter-7 System of Particles and Rotational Motion : Statement of parallel and perpendicular axes theorems and their applications.
• Chapter-8 Gravitation: Acceleration due to gravity, Kepler’s laws of planetary motion
• Chapter-9 Mechanical Properties of Solids : Shear modulus of rigidity, elastic behaviour, Poisson’s ratio; elastic energy.
• Chapter-11 Thermal Properties of Matter: Heat, temperature, Heat  transfer-conduction, convection and radiation
• Chapter-12 Thermodynamics: Heat engine and refrigerator.
• Chapter-15 Waves : Fundamental mode and harmonics, Doppler effects

Class 11 Biology Unit I: Diversity of Living Organisms

• Chapter-1: The Living World: Taxonomy and systematics; tools for study of taxonomy- museums, zoological parks, herbaria, botanical gardens, keys for identification.
• Chapter-3: Plant Kingdom : Angiosperms; Angiosperms – classification up to class, characteristic features and examples.

Class 11 Biology Unit-II Structural Organization in Animals and Plants

• Chapter-5: Morphology of Flowering Plants : Morphology and modifications: Morphology of different parts of flowering plants: root, stem, leaf, fruit and seed.  Description of families: – Fabaceae
• Chapter-6: Anatomy of Flowering Plants: Anatomy and functions of different tissues and tissue systems in dicots and monocots. Secondary growth.
• Chapter-7: Structural Organisation in Anima: Morphology, Anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (cockroach), (a brief account only).

Unit-IV Plant Physiology

• Chapter-11: Transport in Plants : Movement of water, gases and nutrients; cell to cell transport, diffusion, facilitated diffusion, active transport; plant-water relations, imbibition, water potential, osmosis, plasmolysis; long-distance transport of water – Absorption, apoplast, symplast, transpiration pull, root pressure and guttation; transpiration, opening and closing of stomata; Uptake and translocation of mineral nutrients – Transport of food, phloem transport, mass flow hypothesis.
• Chapter-12: Mineral Nutrition: Essential minerals, macro-and micronutrients and their role; Deficiency symptoms; Mineral toxicity; Elementary idea of hydroponics as a method to study mineral nutrition; nitrogen metabolism, nitrogen cycle, biological nitrogen fixation.
• Chapter-15: Plant – Growth and Development: Seed germination; phases of plant growth and plant growth rate; conditions of growth; differentiation, dedifferentiation and redifferentiation; Sequence of developmental processes in a plant cell;  Seed dormancy; vernalisation; photoperiodism

Unit-V Human Physiology

• Chapter-16: Digestion and Absorption : Alimentary canal and digestive glands, role of digestive enzymes and gastrointestinal hormones; Peristalsis, digestion, absorption and assimilation of proteins, carbohydrates and fats; calorific values of proteins, carbohydrates and fats; egestion; nutritional and digestive disorders – PEM, indigestion, constipation, vomiting, jaundice, diarrhoea.
• Chapter-20: Locomotion and Movement: Types of movement – ciliary, flagellar, muscular;  Skeletal system and its functions; joints; disorders of muscular and skeletal systems – myasthenia gravis, tetany, muscular dystrophy, arthritis, osteoporosis, gout.
• Chapter-21: Neural Control and Coordination : Reflex action; sensory perception; sense organs; elementary structure and functions of eye and ear