Hello,

I can tell you the weightage of chapters(chemistry) in jee mains:

• Physical Chemistry:

At least one question from each of topics given below is asked.

Laws of Chemical Combination, Mole concept & Stoichiometry, Simple problems related to finding molarity, molality, mole fraction are asked.

Atomic Structure: Dual nature of Radiation, Atomic Spectra, Bohr’s Model for Hydrogen and Hydrogen-like species, Quantum Mechanical Model-Finding Quantum numbers for any element.

Gaseous State: Kinetic Molecular Theory of Gases, Real Gas behavior, and Liquefaction of gases.

Solid State: Crystal Lattice and Unit cells, Close packed structures, and voids, Defects in Solids and their examples.

Solution: Types and Concentration, Vapour Pressure of a solution and Raoult’s law, Colligative properties of Solutions & Van’t Hoff factor ‘i’.

Thermochemistry: Enthalpy and Heat capacity, Gibb’s energy and Spontaneity. Hess Law is of utmost important.

Equilibrium: Factors affecting equilibrium-Le Chatelier’s Principle, Acids, Bases and Concept of pH, Hydrolysis of Salts and Buffer solutions.

Redox reactions & Electrochemistry: Redox Reactions-Types and Concept of Oxidation Number, Galvanic Cells: features and Electrode Potential, Conductance of Electrolytic Solutions.

Chemical Kinetics: Rate, Order and Molecularity of a reaction, Integrated rate equations and Half-life, Arrhenius Equation.

Surface Chemistry: Adsorption Mechanism, Types, Isotherms, Catalysis, Colloids and Emulsions: Classification and Properties.

• Inorganic Chemistry:

At least one question from each of topics given below.

Modern periodic table and Electronic configuration of Elements, Periodic Trends in Properties of Elements.

Chemical Bonding & Molecular Structure, VSEPR Theory, Valence bond theory and Hybridization.

s-Block Elements: Hydrides, General Characteristics of Compounds formed from S block elements.

p-Block Elements: General trends in the Properties of Compounds of P block elements, Important Compounds of Boron, Carbon, and Silicon, Important Compounds of Halogens and their properties.

Extraction of Metals: Processes of extraction of Metals from their ores, Electrochemical principles of metallurgy of d & f Block Elements.

Coordination Compounds: IUPAC Nomenclature and Isomerism of Coordination compounds, Werner’s theory, Valence bond theory & Crystal field theory.

Chemical Principles Involved in the Qualitative Salt Analysis and Qualitative and Quantitative analysis of Organic Compounds.

• Organic Chemistry:

9 to 10 questions will be most probably asked in JEE Mains. At least one question from each of the topics given below:

Basic Principles of Organic Chemistry: Structure and Nomenclature of Organic Compounds, Stereoisomerism in Organic Compounds and Electronic Displacement Effects in Covalent Bonds.

Hydrocarbons & Halides: Structure, Physical and Chemical Properties of Alkanes, Alkenes & Alkynes, Benzene, Haloalkanes & Haloarenes.

Oxygen containing compounds: Alcohols, Phenols & Ether, Aldehydes and Ketones: Physical and Chemical Properties. Carboxylic acids and their derivatives: Structure & Chemical Properties.

Nitrogen containing compounds: Amines & Diazonium salts and their Physical & Chemical properties.

Biomolecules: Monosaccharides-Structure, Physical and Chemical properties, Proteins and Enzymes: Structure and Properties, Nucleic Acids: Structure and Properties.

Polymers: Addition & Condensation Polymerisation: Mechanism and Examples along with their uses, Commercial Polymers.

Chemistry in Everyday life: Drugs-Classification and therapeutic Action, Soaps and Detergents.

Environmental Chemistry: Atmospheric Pollution and Control, Water Pollution and Control..

Good luck.

General Organic Chemistry 9% Alcohol Phenol Ether 7% Redox reactions 6% Chemical Bonding 5% Coordination Compound 5% P-Block Elements 5% S-Block Elements 5% Aldehyde Ketone 5% Solutions 5% Solid State 5% Chemical Thermodynamics 5% Ionic Equilibrium 3% Chemical Equilibrium 3% Surface Chemistry 3% Atomic Structure 2% Gaseous State 2% Transition Elements 2% Polymers 2% Nuclear Chemistry 2% Chemical Kinetics 2% Mole Concepts 2% Amines and Diazonium Salts 2% Biomolecules 2% Alkanes, Alkenes and Alkynes 2% Electrochemistry 2%.

For the detailed syllabus kindly visit to:-

https://engineering.careers360.com/articles/jee-main-chemistry-syllabus