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Further details please visit the following link JEE Main 2021.
Important : JEE Main 2021 will be conducted on
Session 1 – February 23 to 26, 2021 Session 2 – March 15 to 18, 2021 Session 3 – April 27 to 30, 2021 Session 4 – May 24 to 28, 2021 by the JEE Apex Board for admission to Undergraduate Engineering Programs in NITs, IIITs, other Centrally Funded Technical Institutions, participating State Government Institutions etc..
Click to know details about JEE Main 2021 Chemistry Syllabus
Unit 15 : P – Block Elements :
Group – 13 to Group 18 Elements General Introduction : Electronic configuration and general trends in physical and chemical properties of elements across the periods and down the groups; unique behaviour of the first element in each group.
Groupwise study of the p – block elements
Group – 13 :
Preparation, properties and uses of boron and aluminium; properties of boric acid, diborane, boron trifluoride, aluminium chloride and alums.
Group – 14 : Allotropes of carbon, tendency for catenation; Structure & properties of silicates, and zeolites.
Group – 15 : Properties and uses of nitrogen and phosphorus; Allotrophic forms of phosphorus; Preparation, properties, structure and uses of ammonia, nitric acid, phosphine and phosphorus halides, ( PCl3, PCl5 ); Structures of oxides and oxoacids of nitrogen and phosphorus.
Group – 16 : Preparation, properties, structures and uses of dioxygen and ozone; Allotropic forms of sulphur; Preparation, properties, structures and uses of sulphur dioxide, sulphuric acid ( including its industrial preparation ); Structures of oxoacids of sulphur.
Group – 17 : Preparation, properties and uses of chlorine and hydrochloric acid; Trends in the acidic nature of hydrogen halides; Structures of Interhalogen compounds and oxides and oxoacids of halogens.
Group – 18 : Occurrence and uses of noble gases; Structures of fluorides and oxides of xenon.
Unit 16 : d – and f – Block Elements : Transition Elements General introduction, electronic configuration, occurrence and characteristics, general trends in properties of the first row transition elements – physical properties, ionization enthalpy, oxidation states, atomic radii, colour, catalytic behaviour, magnetic properties, complex formation, interstitial compounds, alloy formation; Preparation, properties and uses of K2Cr2O7 and KMnO4.
Inner Transition Elements Lanthanoids – Electronic configuration, oxidation states, chemical reactivity and lanthanoid contraction. Actinoids – Electronic configuration and oxidation states.
Unit 17 : Co – Ordination Compounds : Introduction to co – ordination compounds, Werner’s theory; ligands, co – ordination number, denticity, chelation; IUPAC nomenclature of mononuclear co – ordination compounds, isomerism; Bonding – Valence bond approach and basic ideas of Crystal field theory, colour and magnetic properties; Importance of co-ordination compounds ( in qualitative analysis, extraction of metals and in biological systems ).
UNIT 18 : Environmental Chemistry : Environmental pollution – Atmospheric, water and soil. Atmospheric pollution – Tropospheric and stratospheric Tropospheric pollutants – Gaseous pollutants: Oxides of carbon, nitrogen and sulphur, hydrocarbons; their sources, harmful effects and prevention; Green house effect and Global warming; Acid rain; Particulate pollutants: Smoke, dust, smog, fumes, mist; their sources, harmful effects and prevention.
Stratospheric Pollution – Formation and breakdown of ozone, depletion of ozone layer – its mechanism and effects. Water Pollution – Major pollutants such as, pathogens, organic wastes and chemical pollutants; their harmful effects and prevention.
Soil Pollution – Major pollutants such as: Pesticides ( insecticides, herbicides and fungicides ), their harmful effects and prevention. Strategies to control environmental pollution.
Section – C :
Organic Chemistry :
Unit 19 : Purification and Characterisation of Organic Compounds : Purification – Crystallization, sublimation, distillation, differential extraction and chromatography – principles and their applications.
Qualitative analysis – Detection of nitrogen, sulphur, phosphorus and halogens. Quantitative analysis ( basic principles only ) – Estimation of carbon, hydrogen, nitrogen, halogens, sulphur, phosphorus. Calculations of empirical formulae and molecular formulae; Numerical problems in organic quantitative analysis.
Unit 20 : Some Basic Principles of Organic Chemistry : Tetravalency of carbon; Shapes of simple molecules – hybridization ( s and p ); Classification of organic compounds based on functional groups : – C = C – , – C ? C – and those containing halogens, oxygen, nitrogen and sulphur; Homologous series; Isomerism – structural and stereoisomerism. Nomenclature ( Trivial and IUPAC ) Covalent bond fission – Homolytic and heterolytic : free radicals, carbocations and carbanions; stability of carbocations and free radicals, electrophiles and nucleophiles.
Electronic displacement in a covalent bond – Inductive effect, electromeric effect, resonance and hyperconjugation. Common types of organic reactions – Substitution, addition, elimination and rearrangement.
Unit 21 : Hydrocarbons : Classification, isomerism, IUPAC nomenclature, general methods of preparation, properties and reactions. Alkanes – Conformations : Sawhorse and Newman projections ( of ethane ); Mechanism of halogenation of alkanes.
Alkenes – Geometrical isomerism; Mechanism of electrophilic addition: addition of hydrogen, halogens, water, hydrogen halides ( Markownikoff’s and peroxide effect ); Ozonolysis, oxidation, and polymerization. Alkynes – Acidic character; Addition of hydrogen, halogens, water and hydrogen halides; Polymerization.
Aromatic hydrocarbons – Nomenclature, benzene – structure and aromaticity; Mechanism of electrophilic substitution: halogenation, nitration, Friedel – Craft’s alkylation and acylation, directive influence of functional group in mono – substituted benzene.
Unit 22 : Organic Compounds Containing Halogens : General methods of preparation, properties and reactions; Nature of C – X bond; Mechanisms of substitution reactions. Uses; Environmental effects of chloroform, iodoform, freons and DDT.
Unit 23 : Organic Compounds Containing Oxygen : General methods of preparation, properties, reactions and uses. ALCOHOLS, PHENOLS and ETHERS Alcohols : Identification of primary, secondary and tertiary alcohols; mechanism of dehydration.
Phenols : Acidic nature, electrophilic substitution reactions: halogenation, nitration and sulphonation, Reimer – Tiemann reaction.
Ethers : Structure. Aldehyde and Ketones: Nature of carbonyl group; Nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones; Important reactions such as – Nucleophilic addition reactions ( addition of HCN, NH3 and its derivatives ), Grignard reagent; oxidation; reduction ( Wolff Kishner and Clemmensen ); acidity of ? – hydrogen, aldol condensation, Cannizzaro reaction, Haloform reaction; Chemical tests to distinguish between aldehydes and Ketones. CARBOXYLIC ACIDS Acidic strength and factors affecting it.
Unit 24 : Organic Compounds Containing Nitrogen : General methods of preparation, properties, reactions and uses. Amines : Nomenclature, classification, structure, basic character and identification of primary, secondary and tertiary amines and their basic character. Diazonium Salts: Importance in synthetic organic chemistry.
Unit 25 : Polymers : General introduction and classification of polymers, general methods of polymerization – addition and condensation, copolymerization; Natural and synthetic rubber and vulcanization; some important polymers with emphasis on their monomers and uses – polythene, nylon, polyester and bakelite.
Unit 26 : Bio Molecules : General introduction and importance of biomolecules.
Carbohydrates – Classification : aldoses and ketoses; monosaccharides ( glucose and fructose ), constituent monosaccharides of oligosacchorides ( sucrose, lactose, maltose ) and polysaccharides ( starch, cellulose, glycogen ).
Proteins – Elementary Idea of ? – amino acids, peptide bond, polypeptides; Proteins: primary, secondary, tertiary and quaternary structure ( qualitative idea only ), denaturation of proteins, enzymes.
Vitamins – Classification and functions. Nucleic Acids – Chemical constitution of DNA and RNA. Biological functions of nucleic acids.
Unit 27 : Chemistry in Everyday Life : Chemicals in medicines – Analgesics, tranquilizers, antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamins – their meaning and common examples.
Chemicals in food – Preservatives, artificial sweetening agents – common examples. Cleansing agents – Soaps and detergents, cleansing action.
Unit 28 : Principles Related to Practical Chemistry :
Detection of extra elements ( N, S, halogens ) in organic compounds; Detection of the following functional groups: hydroxyl ( alcoholic and phenolic ), carbonyl ( aldehyde and ketone ), carboxyl and amino groups in organic compounds.
Chemistry involved in the preparation of the following : Inorganic compounds : Mohr’s salt, potash alum. Organic compounds : Acetanilide, p – nitroacetanilide, aniline yellow, iodoform.
Chemistry involved in the titrimetric excercises – Acids bases and the use of indicators, oxalic – acid vs KMnO4, Mohr’s salt vs KMnO4.
Chemical principles involved in the qualitative salt analysis: Cations – Pb2+ , Cu2+, AI3+, Fe3+, Zn2+, Ni2+, Ca2+, Ba2+, Mg2+, NH4+. Anions – CO32-, S2-, SO42-, NO2-, NO3-, CI-, Br, I. ( Insoluble salts excluded ).
Chemical principles involved in the following experiments :
- Enthalpy of solution of CuSO4
- Enthalpy of neutralization of strong acid and strong base.
- Preparation of lyophilic and lyophobic sols.
- Kinetic study of reaction of iodide ion with hydrogen peroxide at room temperature.
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