JEE Main Chemistry Syllabus 2021: The National Testing Agency (NTA) is conducting the JEE Main exam four times this year. Therefore, it becomes critical to prepare well if you are appearing for any of the sessions. The first step towards the preparation is knowing the syllabus of JEE Main for all the subjects. Here we have provided the JEE Main Chemistry Syllabus 2021 along with the topic wise weightage so that you can strategize your preparation accordingly.
The questions asked in the JEE Main Chemistry section basically comprises of the topics that are covered in Class 11th and 12th. JEE Mains Chemistry syllabus 2021 consists of three major parts, i.e., Inorganic, Organic and Physical Chemistry. NTA has postponed the examination of JEE Mains April 2021 session due to the COVID19 pandemic situation. The JEE Mains revised exam dates for April session will be released 15 days prior to the examination. JEE Mains Feb and March session already conducted. JEE Mains 2021 May session is conducting from May 24 to 28, 2021. We advise you to check the detailed Chemistry syllabus for JEE Mains 2021 before starting your preparation. Continue reading this article to know more.
JEE Main Exams 2021
|JEE Main Feb 2021||JEE Main March 2021|
|JEE Main April 2021||JEE Main May 2021|
JEE Main Chemistry Syllabus 2021
Before we get into the details of the Chemistry syllabus of JEE Main 2021, let’s look at important exam dates so that you can strategize your preparation plan and leave a buffer time for practising the JEE Main mock tests. The exam dates for JEE Mains April session 2021 are mentioned as under:
JEE Mains April Exam Dates 2021
|Exam Events||JEE Main April Dates|
|JEE Main Registration Dates Commences||March 25, 2020|
|Last Date To Fill JEE Main Application Form||April 4, 2021|
|Last Date for JEE Main Fee Payment|
April 6 to April 7, 2021 (up to 11:50 pm) – Extended
|JEE Main Correction Dates|
April 6 to April 7, 2021 (up to 11:50 pm) – Extended
|Release of JEE Main Admit Card||Second week of April 2021|
|JEE Main 2021 Exam||February Exam: February 23 to 26, 2021|
March Exam: March 16 to 18, 2021
May Exam: May 24 to 28, 2021
|Declaration of JEE Main Result||May, 2021|
Since JEE Main Chemistry is a part of Paper-1, we will be providing all the details in this article related to Paper-1 only.
Read Also – JEE Main Syllabus 2021 PDF (All sections)
JEE Main Chemistry Syllabus 2021 PDF Download
The NTA has released the JEE Mains Chemistry Syllabus 2021 PDF. Candidates can download the Chemistry syllabus for JEE Mains 2021 from the table given below:
|JEE Main Paper||Download Link|
|Chemistry Syllabus for B. E or B. Tech||Download here|
JEE Mains Chemistry Syllabus 2021 in Detail
The experts at Embibe have analyzed the past years of JEE Main papers and concluded that the questions asked in JEE Main Chemistry section are of easy to moderate difficulty. However, the complete JEE Chemistry syllabus 2021 is quite lengthy. This is why we advise you to focus on the basics and prepare well for the topics with high weightage. You can also go through the JEE Main important chapters.
Here we have provided the topic wise JEE Main Chemistry syllabus 2021.
JEE Main Physical Chemistry Syllabus 2021
|Unit 1: Some Basic Concepts of Chemistry||Matter and its nature, Dalton’s the atomic theory, the concept of the atom, molecule, element, and compound.|
Physical quantities and their measurements in Chemistry, precision, and accuracy, significant figures, S.I. Units, dimensional analysis.
Laws of chemical combination.
Atomic and molecular masses, mole concept, molar mass, percentage composition, empirical and molecular formulae.
Chemical equations and stoichiometry.
|Unit 2: States of Matter||Classification of matter into solid, liquid and gaseous states.|
Gaseous State: Measurable properties of gases; Gas laws – Boyle’s law, Charles’s law, Graham’s law of diffusion, Avogadro’s law, Dalton’s law of partial pressure.
The concept of the Absolute scale of temperature; Ideal gas equation, Kinetic theory of gases (only postulates).
The concept of average, root mean square and most probable velocities.
Real gases, deviation from Ideal behaviour, compressibility factor, van der Waals equation, liquefaction of gases, critical constants.
Liquid State: Properties of liquids – vapour pressure, viscosity and surface tension and effect of temperature on them (qualitative treatment only).
Solid State: Classification of solids-molecular, ionic, covalent and metallic solids, amorphous and crystalline solids (elementary idea).
Bragg’s Law and its applications.
Unit cell and lattices, packing in solids (fcc, bcc and hcp lattices), voids, calculations involving unit cell parameters, Imperfection in solids.
Electrical, magnetic and dielectric properties.
|Unit 3: Atomic Structure||Discovery of subatomic particles (electron, proton, and neutron).|
Thomson and Rutherford atomic models and their limitations.
Nature of electromagnetic radiation, the photoelectric effect.
The spectrum of the hydrogen atom, Bohr model of the hydrogen atom – its postulates, derivation of the relations for the energy of the electron and radii of the different orbits, limitations of Bohr’s model.
Dual nature of matter, de-Broglie relationship, Heisenberg uncertainty principle.
Elementary ideas of quantum mechanics, the quantum mechanical model of an atom, its important features, the concept of atomic orbitals as one-electron wave functions.
Variation of Ψ1 and Ψ2 with r for 1s and 2s orbitals; various quantum numbers (principal, angular momentum, and magnetic quantum numbers), and their significance.
Shapes of s, p and d – orbitals, electron spin and spin quantum number.
Rules for filling electrons in orbitals – Aufbau principle, Pauli exclusion principle and Hund’s rule, electronic configuration of elements, the extra stability of half-filled, and completely filled orbitals.
|Unit 4: Chemical Bonding and Molecular Structure||Kossel – Lewis approach to chemical bond formation, the concept of ionic and covalent bonds.|
Ionic Bonding: Formation of ionic bonds, factors affecting the formation of ionic bonds; calculation of lattice enthalpy.
Covalent Bonding: Concept of electronegativity, Fajan’s rule, dipole moment; Valence Shell Electron Pair Repulsion (VSEPR) theory and shapes of simple molecules.
Quantum mechanical approach to covalent bonding: Valence bond theory, Its important features, the concept of hybridization involving s, p, and d orbitals; Resonance.
Molecular Orbital Theory: Its important features, LCAOs, types of molecular orbitals (bonding, antibonding), sigma and pi-bonds, molecular orbital electronic configurations of homonuclear diatomic molecules, the concept of bond order, bond length and bond energy.
Elementary idea of metallic bonding, Hydrogen bonding, and its applications.
|Unit 5: Chemical Thermodynamics||Fundamentals of thermodynamics: System and surroundings, extensive and intensive properties, state functions, types of processes.|
First law of thermodynamics: Concept of work, heat internal energy, and enthalpy, heat capacity, molar heat capacity.
Hess’s law of constant heat summation.
Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization, and solution.
The second law of thermodynamics: Spontaneity of processes; Delta S of the universe and Delta G of the system as criteria for spontaneity, Delta Go (Standard Gibbs energy change) and equilibrium constant.
|Unit 6: Solutions||Different methods for expressing the concentration of a solution: molality, molarity, mole fraction, percentage (by volume and mass both), the vapour pressure of solutions and Raoult’s Law.|
Ideal and non-ideal solutions, vapour pressure – composition, plots for ideal and non-ideal solutions.
Colligative properties of dilute solutions, relative lowering of vapour pressure, depression of freezing point, elevation of boiling point and osmotic pressure.
Determination of molecular mass using colligative properties;
Abnormal value of molar mass, Hoff factor, and its significance.
|Unit 7: Equilibrium||Meaning of equilibrium, the concept of dynamic equilibrium.|
Equilibria involving physical processes: Solid – liquid, liquid – gas and solid – gas equilibria, Henry’s law, a general characteristic of equilibrium involving physical processes.
Equilibria involving chemical processes: Law of chemical equilibrium, equilibrium constants (Kp and Kc) and their significance, the significance of Delta G and Delta Go in chemical equilibria, factors affecting equilibrium concentration, pressure, temperature, the effect of the catalyst.
Le Chatelier’s principle.
Ionic equilibrium: Weak and strong electrolytes, ionization of electrolytes, various concepts of acids and bases (Arrhenius, Bronsted-Lowry and Lewis) and their ionization, acid-base equilibria (including multistage ionization) and ionization constants, ionization of water, pH scale, common ion effect, hydrolysis of salts and pH of their solutions, solubility of sparingly soluble salts and solubility products, buffer solutions.
|Unit 8: Redox Reactions and Electrochemistry||Electronic concepts of oxidation and reduction, redox reactions, oxidation number, rules for assigning oxidation number, balancing of redox reactions.|
Electrolytic and metallic conduction, conductance in electrolytic solutions, specific and molar conductivities and their variation with concentration.
Kohlrausch’s law and its applications.
Electrochemical cells: Electrolytic and Galvanic cells, different types of electrodes, electrode potentials including standard electrode potential, half – cell and cell reactions, emf of a Galvanic cell and its measurement.
Nernst equation and its applications; Relationship between cell potential and Gibbs’ energy change.
Dry cell and lead accumulator, Fuel cells, Corrosion and its prevention.
|Unit 9: Chemical Kinetics||The rate of a chemical reaction, factors affecting the rate of reactions: concentration, temperature, pressure, and catalyst.|
Elementary and complex reactions, order and molecularity of reactions, rate law, rate constant and its units, differential and integral forms of zero and first-order reactions, their characteristics and half-lives, the effect of temperature on the rate of reactions.
Arrhenius theory, activation energy and its calculation, collision theory of bimolecular gaseous reactions (no derivation).
|Unit 10: Surface Chemistry||Adsorption: Physisorption and chemisorption and their characteristics, factors affecting the adsorption of gases on solids: Freundlich and Langmuir adsorption isotherms, adsorption from solutions.|
Catalysis: Homogeneous and heterogeneous, activity and selectivity of solid catalysts, enzyme catalysis, and its mechanism.
Colloidal state: Distinction among true solutions, colloids, and suspensions, classification of colloids: lyophilic, lyophobic.
Multimolecular, macromolecular and associated colloids (micelles), preparation and properties of colloids: Tyndall effect, Brownian movement, electrophoresis, dialysis, coagulation, and flocculation.
Emulsions and their characteristics.
JEE Main Inorganic Chemistry Syllabus 2021
|Unit 11: Classification of Elements and Periodicity in Properties||Modern periodic law and present form of the periodic table.|
s, p, d and f block elements.
Periodic trends in properties of elements atomic and ionic radii, ionization enthalpy.
Electron gain enthalpy, valence, oxidation states and chemical reactivity.
|Unit 12: General Principles and Process of Isolation of Metals||Modes of occurrence of elements in nature, minerals, ores.|
Extraction of metals: concentration, reduction (chemical and electrolytic methods) and refining with special reference to the extraction of Al, Cu, Zn, and Fe.
Thermodynamic and electrochemical principles involved in the extraction of metals.
|Unit 13: Hydrogen||The position of hydrogen in periodic table, isotopes, preparation, properties, and uses of hydrogen.|
Physical and chemical properties of water and heavy water.
Structure, preparation, reactions, and uses of hydrogen peroxide.
Classification of hydrides: ionic, covalent and interstitial.
Hydrogen as a fuel.
|Unit 14: S Block Elements (Alkali and Alkaline Earth Metals)||Group 1 and Group 2 Elements: General introduction, electronic configuration and general trends in physical and chemical properties of elements, anomalous properties of the first element of each group, diagonal relationships.|
Preparation and properties of some important compounds: sodium carbonate, sodium chloride, sodium hydroxide and sodium hydrogen carbonate.
Industrial uses of lime, limestone, Plaster of Paris and cement.
The biological significance of Na, K, Mg and Ca.
|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; Structure, properties and uses of borax, boric acid, diborane, boron trifluoride, aluminium chloride, and alums.
Group 14: Tendency for catenation; Structure, properties, and uses of allotropes and oxides of carbon, silicon tetrachloride, silicates, zeolites, and silicones.
Group 15: Properties and uses of nitrogen and phosphorus; Allotropic 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 sulfur; Preparation, properties, structures, and uses of sulfur dioxide, sulphuric acid (including its industrial preparation); Structures of oxoacids of sulfur.
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 oxyacids 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: Lanthanides, Electronic configuration, oxidation states, chemical reactivity and lanthanoid contraction, and Actinoids: Electronic configuration and oxidation states.
|Unit 17: Coordination Compounds||Introduction to coordination compounds, Werner’s theory.|
ligands, coordination number, denticity, chelation.
IUPAC nomenclature of mononuclear coordination compounds, isomerism.
Bonding-Valence bond approach and basic ideas of Crystal field theory, colour and magnetic properties.
Importance of coordination 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.
Gaseous pollutants: Oxides of carbon, nitrogen, and sulfur, hydrocarbons; their sources, harmful effects, and prevention.
Greenhouse 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.
JEE Main Organic Chemistry Syllabus 2021
|Unit 19: Purification and Characterisation of Organic Compounds||Purification: Crystallization, differential extraction, sublimation, distillation and chromatography principles and their applications.|
Qualitative analysis: Detection of halogens, phosphorus, nitrogen and sulfur.
Quantitative analysis: Estimation of carbon, halogens, sulfur, hydrogen, nitrogen and phosphorus.
Calculations of empirical formula 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- and those containing halogens, oxygen, nitrogen, and sulfur; 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 Crafts alkylation and acylation, directive influence of the functional group in monosubstituted 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: Identification of primary, secondary and tertiary alcohols; mechanism of dehydration.
Phenols: Acidic nature, electrophilic substitution reactions: halogenation, nitration, and sulphonation, Reimer Tiemann reaction.
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); the 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, co-polymerization.|
Natural and synthetic rubber and vulcanization.
Some important polymers with emphasis on their monomers and uses, polyethene, nylon, polyester, and bakelite.
|Unit 26: Biomolecules||General introduction and importance of biomolecules.|
Carbohydrates: Classification: aldoses and ketoses; monosaccharides (glucose and fructose), constituent monosaccharides or oligosaccharides (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.
B Chemical constitution of DNA and RNA. Biological functions of nucleic acids.
|Unit 27: Chemistry in Everyday Life||Chemicals in medicines: Analgesics, tranquillizers, antiseptics, disinfectants, antimicrobials, antifertility drugs, antibiotics, antacids, antihistamines 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: carbonyl (aldehyde and ketone), hydroxyl (alcoholic and phenolic), carboxyl and amino groups in organic compounds.
Inorganic compounds: Mohr’s salt, potash alum, and Organic compounds: Acetanilide, p-nitro acetanilide, aniline yellow, iodoform.
Titrimetric exercises: Acids bases and the use of indicators, oxalic-acid vs KMnO4, Mohr’s salt vs KMnO4.
Qualitative salt analysis – Cations: Pb2+, Cu2+, AI3+, Fe3+, Zn2+, Ni2+, Ca2+, Ba2+, Mg2+, NH4+, and Anions: CO32-, S2-, SO42-, NO2-, NO3-, CI-, Br, I (Insoluble salts excluded).
Enthalpy of solution of CuSO4, Enthalpy of neutralization of strong acid and strong base, Preparation of lyophilic and lyophobic sols, and Kinetic study of the reaction of iodide ion with hydrogen peroxide at room temperature.
JEE Main Chemistry Syllabus with Weightage
The JEE Main question paper comprises of a wide range of topics from the Chemistry section. Therefore, it is important to check the topic-wise weightage of Chemistry section from the table below.
JEE Main Chemistry Syllabus with Topic wise Weightage 2021
|Topics||Number of Questions||Marks|
|Periodic table and Representative Elements||3||12|
|Transition Elements and Coordination Chemistry||3||12|
|Thermodynamics and Gaseous State||2||8|
|Solid-State and Surface Chemistry||2||8|
|Chemical and Ionic Equilibrium||2||8|
|Nuclear Chemistry and Environment||2||8|
|General Organic Chemistry||1||4|
|Solution and Colligative Properties||1||4|
|Carboxylic Acid and their Derivatives||1||4|
|Carbohydrates, Amino acid and Polymers||1||4|
JEE Mains Chemistry Syllabus 2021: Why Attempting The Chemistry Section First Is Useful?
Experts advise to attempt the Chemistry section first in the B. E. /B. Tech paper of JEE Main. The reasons are mentioned below:
- The major portion of the Chemistry comprises of the fact-based questions. Therefore, it’ll be a quick process in solving them first. You can use the extra time to utilize for Physics and Maths sections.
- In Chemistry, starting with Inorganic Chemistry is useful as the questions in this topic are direct and can be answered with the direct use of conceptual knowledge.
- Experts suggest the candidates to solve the JEE Main Chemistry section in 40 to 45 minutes.
Best Books for JEE Mains Chemistry 2021
Candidates can check the best JEE Mains Chemistry books from the table mentioned below:
|Chemistry XI & XII||NCERT|
|Chemistry XI, XII||NCERT|
|Concept of Organic Chemistry||M. S. Chauhan|
|Inorganic Chemistry||O.P. Tandon|
|Numerical Chemistry||P.Bahadur(G.R.Bathla & Sons)|
|Organic Chemistry||O. P. Tandon|
|Organic Chemistry||Paula Bruice Yurkanis|
|Organic Chemistry||Arihant Prakashan|
|Organic Chemistry Volume 1||I. L. Finar|
|Physical Chemistry||O.P. Tandon|
|University Chemistry||Bruce H. Mahan|
Frequently Asked Questions (FAQs) related to JEE Main Chemistry Syllabus 2021
Here we have answered some of the frequently asked questions related to JEE Mains Chemistry Syllabus 2021:
|Q1: How many questions are there in the JEE Main Chemistry paper?|
Ans: In JEE Main Chemistry paper, there are a total of 20 MCQs and 10 Numerical Questions (out of which any 5 to be answered). There is a negative marking of -1 in case of MCQs and the maximum marks in this section are 100.
|Q2: From where can I solve Chemistry questions for free?|
Ans: You can get free JEE Main Chemistry practice questions at Embibe.
|Q3: Can you list the complete JEE Main Chemistry Syllabus?|
Ans: JEE Main Chemistry syllabus comprises of three parts: Physical, Organic and Inorganic Chemistry. You can find the topic-wise syllabus from this article.
Now that you know everything about the JEE Main Chemistry Syllabus, we hope that this article proves to be helpful for you. Complete the syllabus and give maximum JEE Main mock test as possible. This will help you know your preparation status and help you identify your weak areas as well as work on them.
If you have any questions on JEE Mains Chemistry syllabus or the exam, feel free to drop your queries in the comments section below. Embibe wishes you good luck for JEE Main 2021!567 Views