WBJEE Chemistry Syllabus 2024, Important Topics, Topic Wise Weightage

• Avogadro's Hypothesis and its applications; Gay Lussac's law of gaseous volume; Dalton's atomic hypothesis.
• Gram atomic weight, Gram molecular weight, Gram equivalent weight and mole concept, valency, atomic mass, molecular mass, and equivalent weight; chemical equations equilibrium in chemical equations
• computations (using the mole concept) pertaining to neutralization, displacement, and reduction reactions in common oxidation;
• concentration as measured by molality, molarity, normalcy, and mole fraction.
• composition in percentage terms, empirical formula, and molecular formula; numerical issues.

• The concept of a nuclear atom includes the electron, mass, charge, and atomic number.
• The shortcomings of Rutherford's model;
• additional nuclear structure Atoms of hydrogen have line spectra.
• energy quantization (Planck's equation E = hv);
• Bohr's hydrogen atom model and its limits, Sommerfeld's adjustments (basic concept);
• The ground state electronic configurations of many electron atoms and monoatomic ions, as well as the four quantum numbers;
• The Aufbau Principle, Hund's Rule, and Pauli's Exclusion Principle.
• The principle of uncertainty, the duality of matter and light, and de Broglie's relationship
• The idea of atomic orbitals and the forms of the s, p, and d orbitals (illustrative method).

• The characteristics of α-, β-, and γ-ray radioactivity;
• synthetic transformation; The average age, half-life, decay constant, and rate of radioactive decay of radioactive elements. radioactive units; numerical issues.
• Group displacement law, the stability of the atomic nucleus, and the impact of the neutron-proton (n/p) ratio on the modes of decay
• Applications of radioisotopes (using C, P, Co, and I as examples) definitions and examples of isobars and isotones
• Basic understanding of the reactions of nuclear fission and fusion.

• The modern periodic chart is based on electrical configurations, groups (Gr. 1–18), and periods; the modern periodic law is based on atomic number.
• elements' general characteristics include representative elements (s- and p-blocks), transition elements (d-blocks), and inner transition elements (f-block/lanthanides and actinides).
• Atomic radii, valency, ionization energy, electron affinity, electronegativity, metallic character, and basic and acidic characteristics of oxides and hydrides of the typical elements (up to Z = 36) are examples of periodic patterns in physical and chemical properties.
• Position of noble gases and hydrogen in the periodic table; correlations along diagonals.

• Properties of electrovalent and covalent compounds; valence electrons; the Octet rule; electrovalent, covalent, and coordinate covalent bonds with examples. Examples of the Octet rule's limitations; Fajans Rule.
• instances include the directionality of covalent bonds and the forms of polyatomic compounds.
• A qualitative visual approach to the concept of atomic orbital hybridization: sp, sp2, sp3, and dsp2.
• Bond order and magnetic characteristics in molecular orbital energy diagrams of homonuclear diatomic species.
• Molecule shapes and the Valence Shell Electron Pair Repulsion (VSEPR) notion (basic premise). Concept of resonance (elementary idea), resonance structures (examples).
• basic understanding of hydrogen bonding between and within molecules, bond polarity, dipole moment, and electronegativity, as well as how these qualities affect solubility, mp, and bp;
• In diborane, hydrogen bridge binds.

• Coordination compounds (just examples), double and complex salts,
• Coordination number in Werner's theory (only instances of coordination numbers 4 and 6),
• Mononuclear coordination compounds: IUPAC name, color, magnetic characteristics, and forms.

• Different binding forces are used to classify solids into molecular, ionic, covalent, and metallic solids as well as amorphous and crystalline solids (basic idea).
• Unit cell in two- and three-dimensional lattices; density computation; solid packing; packing efficiency; voids; number of atoms per unit cell in a cubic unit cell; point defects; electrical and magnetic characteristics and so on.
• Band theory of n & p type semiconductors, metals, conductors, semiconductors, and insulators.

• Surface tension, viscosity, and vapour pressure (just qualitative concepts; no mathematical derivations)

• Gases' measurable characteristics.
• Boyle's Law and Charles Law, the temperature scale in absolute terms, the kinetic theory of gases, the ideal gas equation, which shows the relationship between temperature and the average, root mean square, and most likely velocities.
• Graham's Law of gaseous diffusion and Dalton's Law of partial pressure.
• departures from the optimal way of acting.
• Van der Waals equation; liquefaction of gases; actual gases; numerical issues.

• Chemical Energetics: Energy changes in physical and chemical reactions, conservation of energy principle.
• Thermodynamics' first law; internal energy, heat, pressure, volume work, and equilibrium. A chemical reaction's enthalpy change (ΔH) and internal energy change (ΔE).
• Applications of Hess's Law (numerical issues).
• Heat of vaporization, fusion, and reaction; Entropy; Free energy; Second law of thermodynamics; Standard of spontaneity.
• Thermodynamics' third law (short introduction).
• Chemical Equilibrium: The dynamic character of chemical equilibria and the Law of Mass Action. The principle of Le Chatelier and equilibrium constants.
• Gaseous reaction equilibrium constants (Kp and Kc) and their relationship (examples).
• The meaning of ΔG and ΔGº.

• Hybridization of carbon: σ – and π – bonds
• Isomerism – constitutional and stereoisomerism;
• Geometrical and optical isomerism of compounds containing upto two asymmetric carbon atoms.
• IUPAC nomenclature of simple organic compounds – hydrocarbons, mono and bifunctional molecules only (alicyclic and heterocyclic compounds excluded) Conformations of ethane and n-butane (Newman projection only)
• Electronic Effects: Inductive, resonance and hyperconjugation.
• Stability of carbocation, carbanion and free radicals; Rearrangement of carbocation;
• Electrophiles and nucleophiles, tautomerism in β-dicarbonyl compounds, acidity and basicity of simple organic compounds

• Alkanes – Preparation from alkyl halides and carboxylic acids; Reactions — halogenation and combustion
• Alkenes and Alkynes – Preparation from alcohols;
• Formation of Grignard reagents and their synthetic applications for the preparation of alkanes, alcohols, aldehydes, ketones and acids;
• SNl and SN2 reactions (preliminary concept).
• Markownikoff’s and anti-Markovnikov's additions; Hydroboration; Oxymercuration-demercuration, reduction of alkenes and alkynes (H2/Lindler catalyst and Na in liquid NH3), metal acetylides

• Haloalkanes – Preparation from alcohols;
• Nomenclature, nature of C -X bond, physical and chemical properties, mechanism of substitution reactions, optical rotation
• Formation of Grignard reagents and their synthetic applications for the preparation of alkanes, alcohols, aldehydes, ketones and acids; SN1 and SN2 reactions (preliminary concept)
• Uses and environmental effects of - dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT

• Preparation of alcohols from carbonyl compounds and esters.
• Reaction – dehydration, oxidation, esterification, reaction with sodium, ZnCl2/HCl, phosphorus halides
• Ethers – Preparation by Williamson’s synthesis;
• Cleavage with HCl and HI Aldehydes and Ketones – Preparation from esters, acid chlorides, gem-dihalides,
• Ca-salt of carboxylic acids. Reaction – Nucleophilic addition with HCN, hydrazine, hydroxyl amines, semi carbazides, alcohols; Aldol condensation, Clemmensen and Wolff – Kishner reduction, haloform, Cannizzaro and Wittig reactions
• Carboxylic Acids – Hydrolysis of esters (mechanism excluded) and cyanides; Hunsdicker and HVZ reactions
• Aliphatic Amines – Preparation from nitro, cyano and amino compounds. Distinction of 1º, 2º and 3º amines (Hinsberg method); Reaction with HNO2; Carbylamine reaction

WBJEE Chemistry Syllabus 2024 Chapter Wise Weightage