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New Vacancy 2026
TN TRB PG Assistant Chemistry 2026 Notification, Online Form & Exam Date
TN TRB PG Assistant Chemistry Vacancy 2026 provides a golden opportunity for aspirants seeking stable government jobs. Interested candidates can apply online for the posts after verifying the official eligibility criteria, age limit, and educational qualifications. Ensure you track the application deadlines and stay updated with the latest TN TRB PG Assistant Chemistry 2026 recruitment news for a smooth registration process.
To crack the TN TRB PG Assistant Chemistry 2026 exam, understanding the detailed syllabus and exam pattern is mandatory. Aspirants should focus on strategic planning and rigorous time management for each selection phase. Boosting your speed through online mock tests and regular practice is the key to securing a high score in this competitive recruitment. For premium study material and practice sets, follow the expert curated resources on toppersexam.com.
To crack the TN TRB PG Assistant Chemistry 2026 exam, understanding the detailed syllabus and exam pattern is mandatory. Aspirants should focus on strategic planning and rigorous time management for each selection phase. Boosting your speed through online mock tests and regular practice is the key to securing a high score in this competitive recruitment. For premium study material and practice sets, follow the expert curated resources on toppersexam.com.
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TN TRB PG Assistant (Chemistry) Syllabus 2026, Exam Pattern
TN TRB PG Assistant (Chemistry) Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about TN TRB has published notification 2026 for the recruitment of PG Assistant (Chemistry) vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
TRB TN PG Assistant Syllabus 2026 - Overview
| Organization Name | Tamil Nadu Teachers Recruitment Board (TN TRB) |
| Post Name | PG Assistant, Physical Director Grade-I (Chemistry) |
| Vacancy | Notified Soon |
| Application Mode | Online |
| Registration Dates | Notified Soon |
| Exam Date 2026 | Notified Soon |
| Job Location | Tamil Nadu |
| Category | Syllabus and Exam Pattern |
| Official Site | trb.tn.nic.in |
TN TRB PG Assistant (Chemistry) Syllabus 2026
Chemistry :
INORGANIC CHEMISTRY :-
Unit I: Chemical Periodicity: Modern periodic law – Periodicity in properties, the trend in the atomic and ionic radii, ionization potential and electron affinity along the period. Effective nuclear charge – Slater rules and its uses.
Structure and bonding in homo – and hetero-nuclear molecules, including shapes of molecules. (VSEPR Theory): Linear combination of AOs in hybridization, Stereochemistry of the hybrid orbitals, Calculation of s & p characters of equivalence and non-equivalence of hybrid orbitals.
MO theory: MO diagram for the homo-nuclear diatomic molecules, heteronuclear diatomic molecules and triatomic molecules.
Concepts of acids and bases: HSAB concept – theory, classification, characteristics of hard and soft species – symbiosis. Bronsted-Lowry concept – conjugate acid-base theory – relative strength of acids and bases, applications. Lewis concept-characteristic features of the Lewis theory.
Non-Aqueous Solvents: Classification of solvents –characteristics of a solvent/ionizing solvent. Advantages and disadvantages of the following non-aqueous solvents: NH3, HF, HCN, acetic acid, H2SO4. Molten salts as solvents and ionic liquids, supercritical fluids in inorganic chemistry.
Nature of bonding of Main group elements: Alkali and alkaline earth metal complexes: ligands – alkylamines, alkoxides, b-diketones and crown ethers. Electron rich and electron deficient compound ofmain group elements.Allotropes of carbon.
Transition elements and coordination compounds: Structure, bondingtheories, spectral and magnetic properties, reaction mechanisms. Transition Elements –General group trends, Stability of various oxidation states. Difference between the first, second and third transition series. Types of transitions, selection rules for electronic transitions, ground states, correlation diagrams, Orgel and Tanabe Sugano diagrams.
Coordination compounds: Crystal field theory – splitting of d orbitals under different geometries – CFSE – Spectrochemical series – Jahn Teller distortion – Limitations of CFT – MO theory – sigma and pi-bonding in complexes.
Inner transition elements: Spectral, magnetic, redox properties and its applications.
Unit II: Organometallic Compounds: synthesis, structure of bonding and important types of reactions of organometallic compounds – oxidative addition, reductive elimination. Catalysis – Hydrogenation, Hydroformylation, Monsanto and Wacker processes, alkene polymerization.
Cages and clusters: Chemistry and molecularity of metal clusters such as binuclear and trinuclear metal clusters, metal carbonyl, halide type clusters, Borazines and phosphazenes.
Bioinorganic Chemistry: Structures and biological importance of porphyrin ring system, metalloporphyrin, haemoglobin, myoglobin and chlorophyll. Iron-sulphur proteins, Metalloenzymes, Photosynthesis – photosystem-I and photosystem-II. Metal storage and transport – Fe, Cu and Zn storage and transport.
Nuclear chemistry: Nuclear fission and fusion reactions, radio-analytical techniques and activation analysis. Decay modes, types of nuclear reaction – threshold energy, energy barrier, Q-value, nuclear cross section, photonuclear reaction, nuclear fission, spallation, fragmentation and fusion. Fission as a chain reaction – nuclear fuels: fertile and fissile isotopes, radiation hazards – nuclear reactors in India
Physical Chemistry :-
Unit III: Basic principles of quantum mechanics: Planck’s quantum hypothesis and black body radiation; photoelectric effect – classical theory and Einstein’s quantum theory. Bohr’s theory of hydrogen atom; failure of Bohr’s model. Postulate of quantum chemistry; Heisenberg’s uncertainty principle; Davison and Germer experiment. Operator algebra; linear, differential and Hermitian operator; Hamiltonian operator; angular momentum; eigen values and eigen functions. Wave equation – time-independent and time-dependent Schrodinger’s
wave equation. Particle–in–a–box (1D & 3D); rigid rotator; harmonic oscillator and hydrogen atom, including shapes of atomic orbitals; orbital and spin-angular momenta; tunnelling.
Approximation method of quantum mechanics: Variational principle and its application to hydrogen molecule. Perturbation theory up to second order in energy and its applications.
Atomic structure and Spectroscopy: Term symbols, RS and jj coupling, spectra of hydrogen, many electron systems and anti-symmetry principle.
Chemical bonding in diatomic: Elementary concepts of MO and VB theories, Huckel theory conjugated pi electron system (ethylene, butadiene and benzene).
Chemical applications group theory: Symmetry elements, symmetry operations, point groups, their symbols, character tables (C2v, C2h, C3v and C4v), reducible and irreducible representation, great orthogonality theorem and its consequences. Applications of group theory in vibrational spectroscopy, symmetry aspects of molecular vibrations, symmetry selection rules for IR and Raman spectra. Determining symmetries of normal modes of vibration. Symmetry applied to MO theory and orbital hybridization.
Molecular spectroscopy: Spectrum, electromagnetic radiation and its properties, regions of electromagnetic spectrum and their uses, rotational and vibrational spectra of diatomic, Born-Oppenheimer approximation. UV-Visible spectroscopy – principle, Beer-Lambert’slaw, instrumentation, types of electronic transitions, chromophore and auxochromes. Absorption bands and intensity, factors governing absorption maximum and intensity. UV-VIS spectra of simple organic compounds such as alkenes, phenols, anilines, carbonyl compounds and 1,3-diketones.
IR spectroscopy: Principle, regions of IR, selection rule of IR, modes of vibration of diatomic, triatomic linear (CO2) and nonlinear molecules (H2O); types of molecular vibration, application of IR spectroscopy, overtones, IR regions of alcohols, aldehyde, ketones. Raman spectroscopy – Principle, types of stokes and anti–stokes lines. Raman shift – difference between Raman and IR spectroscopy, mutual exclusion principle, vibrations of CO2 molecule, dipole moment and polarizability.
Electronic spectra: Theory of ESR spectra, position of ESR absorption, g and A factor, hyperfine structure, ESR spectra of simple carbon centered free radicals – CH3, CD3 electronic spectra of diatomic molecule – Morse function and Frank Condon principle and basic principles of magnetic resonance spectroscopy.
Chemical thermodynamics: Scope and limitations of thermodynamic system, surroundings and boundary – types of system, extensive and intensive properties; thermodynamic processes – state functions, enthalpy, entropy and internal energy; concept of work and heat, heat capacity, molar heat capacity, first law of thermodynamics and its mathematical expressions. Hess’s law of constant heat summation – enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution.
Reversible and irreversible process: Spontaneity of processes, criteria for spontaneity with respect to ΔS of the universe and ΔG of the system. Second law of thermodynamics, Clausius’s statement and Kelvin – Planck’s statement. Third law of thermodynamics and zeroth law of thermodynamics. Joule – Thomson effect, Inversion temperature, Maxwell’s relations, Carnot theorem, Gibbs free energy and Helmholtz work function and Nernst heat theorem.
Unit IV: Classical thermodynamics: Partial molar properties, chemical potential, Gibb’s-Duhem equation. Determination of partial molar quantities, Thermodynamics of real gases, fugacity – determination of fugacity by graphical and equation of state methods, dependence of temperature, pressure and composition, Thermodynamics of ideal and non-ideal mixtures. Activity and activity coefficients.
Statistical thermodynamics: Concepts of statistical thermodynamics, distinguishable and non-distinguishable particles. Assemblies, ensembles, canonical particles. Boltzmann distribution, Bose-Einstein, Fermi-Dirac statistics, comparison and application; kinetic theory of gases, partition function and their relation to thermodynamic quantities, calculation for model systems.
Phase Rule: Phase, degree of freedom, component, One component system, watersystem – triple point – two componentssystem, reduced phase rule – eutectic temperature – lead & silver system – congruent and incongruent melting point– Zn & Mg system – NaCl & Water system – CST – Phenol & water system. Henry’s law – Raoult’s law – Nernst distribution law – solvent extraction – steam distillation – fractional crystallization – Parke’s process.
Colloids and Surfaces: Stability and properties of colloids, gold number, types of adsorption, Freundlich’s and Langmuir’s adsorption isotherms and surface area; heterogeneous catalysis.
Unit V: Chemical kinetics: Empirical rate laws and temperature dependence, Rate of reaction, order of a reaction, examples and rate equations for zero order, first order, second order and third order reaction. Molecularity of a reaction –unimolecular and bimolecular reaction, half-life period. Theories of reaction rates – collision theory, kinetics of collision theory, failure of collision theory, modification of collision theory, Lindeman theory, Hinshelwood theory and transition state theory/absolute reaction rate theory (ARRT). Potential energy surfaces and reaction coordinates. Study of complex reactions – kinetics of reversible, parallel, consecutive and chain reactions, photochemical reactions (H2-Br2), steady-state approximation, Stern-Volmer equation. Reactions in solutions – cage effect, primary and secondary salt effects, kinetic isotropic effect, linear free energy relationships, Hammett and Traft equation. Kinetic methods of analysis – flow techniques, stopped-flow and continuous-flow techniques, pulse methods, flash photolysis and pulse radiolysis. Relaxation theory and relaxation technique – kinetic of relaxation methods (T-jump and P-jump). Ionic liquids and its applications. Catalysis – homogeneous catalysis, acid-base catalysis, protolytic and prototropic mechanism, acidity function. enzyme catalysis –Michaelis-Menten kinetics, types of inhibitor in enzyme catalysis.
Electrochemistry: Faraday’s laws of electrolysis; specific, equivalent and molar conductance, measurement of conductance. Variation of conductance with dilution for strong and weak electrolytes. Kohlrausch law and its applications. Ostwald’s dilution law, transport number and its determination by Hittorf method and moving boundary method. Debye-Huckel theory.
Electrochemical cells – cells types, galvanic cells, reversible and irreversible cells, electrode potential, oxidation potential, reduction potential, Nernst equation, redox systems.
Ion-ion interaction and activity coefficient – concept of ionic atmosphere, derivation of Debye-Huckel limiting law, verification and experimental validity. Ion-transport in solution – electrolytic conductance, derivation of DebyeHuckel-onsagar equation and experimental validity, first and second Wien effect. Ion-association – Bjerrum treatment of ion association, factors influencing ion association, effect of ion association on conductivity and activity coefficient of electrolytes in solution and triple ion formation.
Electrodics – electrode-electrolyte interface, electrical double layer – HelmoltzPerrin, Gouy-Chapman and stern models and its comparison. Electrocapillary phenomena and electrocapillary curves, Lippmann equation, electrocapillary maximum, electrokinetic phenomena, Zeta potential and its applications. Electrode kinetics Bulter-Volmer equation for one-step electron transfer, high field approximation, Tafel equation, high and low over potential limits, ionic equilibria, conductometric and potentiometric titrations. Electrochemical energy
systems – primary and secondary cells, fuel cells, types of fuel cells, batteries– primary and secondary batteries, lead acid storage battery, liquid lithium-ion batteries, solid-state sodium-ion batteries.
Solid state: Classification of solids, isotropic and anisotropic crystals, unit cell and space lattice, Miller indices for lattice planes, crystal structures, diffraction of X-rays by crystals, Bragg’s law and its applications. Defects of crystals and band structure of solids.
Polymer chemistry: Polymerization – types of polymerization, mechanism of free radical, anionic and cationic polymerization. Polymers molecular weight determination. Preparation, properties, uses of thermoplastic and thermosetting polymers. Elastomers, vulcanization and molding methods of polymers.
Organic Chemistry :-
Unit VI : IUPAC nomenclature: Organic molecules including regio and stereoisomers
Principles of stereochemistry: Configurational and conformational isomerism in acyclic and cyclic compounds, stereogenicity, stereoselectivity, enantioselectivity, diastereo selectivity and asymmetric induction. Geometrical isomerism resulting from double bonds – E, Z system of nomenclature, monocyclic compounds and fused ring systems, stereo specific
and stereo selective reactions with examples.
Aromaticity: Benzenoid and non-benzenoid compounds, generation and reactions.
Organic reactive intermediates: Generation, stability and reactivity of carbocations, carbanions, free radicals, carbenes, benzynes and nitrenes. Organic reaction mechanisms involving the addition, elimination and substitution reactions with the electrophilic, nucleophilic or radical species. Reaction pathways determination.
Common named reactions and rearrangements – Still Coupling, Heck reaction, Pusond-Kahn Reaction, Suzuki Coupling, Mitsunobu reaction, BaylisHillman reaction, Mukiayama’s reaction, Metathesis reaction. Nef reaction, Henry reaction, Ritter reaction. Pinacol-Pinacolone, Wagner-Meerwein, Demjanov, dienone-phenol, Favorskii, Baeyer-Villiger, Wolff, Wittig, Neber, Stevens, Hofmann, Lossen, Curtius, Beckmann, Benzidine and Von Richter rearrangements. Applications in organic synthesis.
Polarimetry: Circular dichroism, Optical Rotatory Dispersion, principles and applications.
Unit VII: Organic transformations and reagents: Functional group inter-conversion including oxidations and reductions. Common catalysts and reagents (organic, inorganic, organometallic and enzymatic), organic transformations in Chemo, regio and stereo selective reactions.
Concepts in organic synthesis: Retro-synthesis, disconnection, synthons, linear and convergent synthesis, umpolung of reactivity and protecting groups. Regioselectivity and chemoselectivity. Alkene synthesis-uses of acetylenes. Two group C-C disconnections in 1,2; 1,3; 1,4; 1,5 difunctional substituents, DielsAlder reactions, Regio and stereo control in carbonyl condensation, Michael addition and Robinson annulations.
Asymmetric synthesis: Chiral auxiliaries, methods of asymmetric induction, substrate, reagent and catalyst controlled reactions, determination of enantiomeric and diastereomeric excess. Enantiomeric discrimination, resolution, kinetics and optical studies
Pericyclic reactions: Electrocyclisation, cycloaddition, sigmatropic rearrangements and other related concerted reactions. Principles and applications of photochemical reactions in organic chemistry.
Synthesis and reactivity of common heterocyclic compounds containing one or two heteroatoms: Furan, thiophene, pyrrole, pyridine, quinoline, isoquinoline, indole, flavins and anthocyanins. Chemistry of natural products– Carbohydrates (Maltose, Starch, Cellulose) proteins and peptides, fatty acids, nucleic acids, terpenes, steroids (Chloesterol, Oestrone, Progresterone) and alkaloids (Reticulene, Reserpine, Morphine). Biogenesis of terpenoids (Zingiberene, Squalene, Lanosteroal).
Biopolymers: Structure and functions of proteins and Nucleic acids. Mechanism of Enzyme action on DNA and RNA.
Theory and spectral interpretations – Structure determination of organic compounds by IR, UV-Vis, 1H & 13C NMR and Mass spectroscopic techniques.
Analytical Chemistry :-
Unit VIII: Data analysis: Nature of quantitative measurements and treatment of data. Mean, median, precision and accuracy, standard deviation, significant figures, Gaussian distribution curves, Null Hypothesis, Confidence interval of mean, Rejection of data (Q test), Student’s t, F tests. Errors – absolute and relative errors, linear regression, covariance and correlation coefficient.
Sampling: Principles of sampling methods for solid, liquids and gases. Gross sampling, Sampler’s responsibility and pitfalls, hazards of sampling
Separation Techniques: Classical forms of chromatography – Introduction, principle and applications of column, thin layer chromatography and paper chromatography, Gas and High-Performance Liquid Chromatography.
Thermo analytical techniques: Principles and applications of TGA, DTA and DSC.
Unit IX: Instrumental Analysis: Fluorimetry – Principles of fluorescence, Instrumentation and its Applications. Turbidimetry and Nephelometry – Theory, instrumentation
and its applications.
Emission spectrometry: Principle, instrumentation and interferences, determination of alkali metals and iron in non-ferrous alloys. Flame Photometry –Theory, Instrumentation and a few important applications, Emission Techniques– Theory, techniques of excitation, electrodes and their shapes, flame and plasma emission spectrometry – instrumentation and its applications. Atomic Absorption Spectrometry – Theory, instrumentation (flame and flameless atomization) and its applications
Mossbauer spectroscopy: Introduction, principle, instrumentation, recoil energy, Doppler effect, number of MB signals, isomer shift, quadrupole splitting, magnetic hyperfine splitting applications.
NMR spectroscopy: Nuclear spin states, NMR active nuclei, nuclear magnetic moment, Larmor equation. Absorption of energy and resonance, population density of nuclear spin states, saturation phenomena, relaxation mechanisms, Bloch equation (only significance and derivation, not required). Comparison of CW and FT NMR instrument. Chemicalshift – Standardsin NMR, Shielding and
De-shielding, Spin-spin coupling, splitting origin and rules – factors affecting coupling constant
Unit X: Nano Chemistry: Basics, nanoparticlesand nanomaterials, types of nanoparticles, preparation, properties and uses of nanoparticles. Carbon nanomaterials –nanotubes, nanorods and nanofibre. Porous solids – nanowires, nanomachines and quantum dots. Methods of nanomaterials synthesis.
Chemical Microscopy: Microscope – parts and optical path application and qualitative study. Electron Microscopy – Principle, Microscope and its operation, sample preparations, applications to analysis, electron probe analyzer, ion microscopy, SEM, TEM, EDS. Fluorescence microscopy – Confocal, Phase contrast SPM, AFM, STM, MFM, EFM. XPS – Electron spectroscopy for Chemical Analysis (ESCA), Principle, Instrumentation, Auger electron spectroscopy – Theory, Principle, instrumentation and general applications – qualitative analysis and depth profiling of solid surfaces
Green chemistry: Principles and Concepts of Green Chemistry, green solvents, super critical CO2. Waste minimization techniques Green catalysis.
Environmental Chemistry: Scope and importance, renewable resources, solar, wind, hydrothermal and tidal energies. Polymers, plastics and its harmful environment effects. Pollution effects on human health.
Supramolecular Chemistry: Nature of supramolecular interaction, host-guest interaction, molecular recognition and its types, self assembly, cation binding hosts, cation, anion and neutral receptors, crown ethers, clathrates and its applications.
Medicinal chemistry: Drug and drug metabolism, mechanism of different types of drug actions, common disease, disorders and their treatment methods. Blood and clinical tests – estimation of blood urea, cholestral, sugar, Fe protein, cholesterol, albumin, vitamins and minerals. Medicinally important compounds and disease caused by deficiency of vitamins.
Unit I: Chemical Periodicity: Modern periodic law – Periodicity in properties, the trend in the atomic and ionic radii, ionization potential and electron affinity along the period. Effective nuclear charge – Slater rules and its uses.
Structure and bonding in homo – and hetero-nuclear molecules, including shapes of molecules. (VSEPR Theory): Linear combination of AOs in hybridization, Stereochemistry of the hybrid orbitals, Calculation of s & p characters of equivalence and non-equivalence of hybrid orbitals.
MO theory: MO diagram for the homo-nuclear diatomic molecules, heteronuclear diatomic molecules and triatomic molecules.
Concepts of acids and bases: HSAB concept – theory, classification, characteristics of hard and soft species – symbiosis. Bronsted-Lowry concept – conjugate acid-base theory – relative strength of acids and bases, applications. Lewis concept-characteristic features of the Lewis theory.
Non-Aqueous Solvents: Classification of solvents –characteristics of a solvent/ionizing solvent. Advantages and disadvantages of the following non-aqueous solvents: NH3, HF, HCN, acetic acid, H2SO4. Molten salts as solvents and ionic liquids, supercritical fluids in inorganic chemistry.
Nature of bonding of Main group elements: Alkali and alkaline earth metal complexes: ligands – alkylamines, alkoxides, b-diketones and crown ethers. Electron rich and electron deficient compound ofmain group elements.Allotropes of carbon.
Transition elements and coordination compounds: Structure, bondingtheories, spectral and magnetic properties, reaction mechanisms. Transition Elements –General group trends, Stability of various oxidation states. Difference between the first, second and third transition series. Types of transitions, selection rules for electronic transitions, ground states, correlation diagrams, Orgel and Tanabe Sugano diagrams.
Coordination compounds: Crystal field theory – splitting of d orbitals under different geometries – CFSE – Spectrochemical series – Jahn Teller distortion – Limitations of CFT – MO theory – sigma and pi-bonding in complexes.
Inner transition elements: Spectral, magnetic, redox properties and its applications.
Unit II: Organometallic Compounds: synthesis, structure of bonding and important types of reactions of organometallic compounds – oxidative addition, reductive elimination. Catalysis – Hydrogenation, Hydroformylation, Monsanto and Wacker processes, alkene polymerization.
Cages and clusters: Chemistry and molecularity of metal clusters such as binuclear and trinuclear metal clusters, metal carbonyl, halide type clusters, Borazines and phosphazenes.
Bioinorganic Chemistry: Structures and biological importance of porphyrin ring system, metalloporphyrin, haemoglobin, myoglobin and chlorophyll. Iron-sulphur proteins, Metalloenzymes, Photosynthesis – photosystem-I and photosystem-II. Metal storage and transport – Fe, Cu and Zn storage and transport.
Nuclear chemistry: Nuclear fission and fusion reactions, radio-analytical techniques and activation analysis. Decay modes, types of nuclear reaction – threshold energy, energy barrier, Q-value, nuclear cross section, photonuclear reaction, nuclear fission, spallation, fragmentation and fusion. Fission as a chain reaction – nuclear fuels: fertile and fissile isotopes, radiation hazards – nuclear reactors in India
Physical Chemistry :-
Unit III: Basic principles of quantum mechanics: Planck’s quantum hypothesis and black body radiation; photoelectric effect – classical theory and Einstein’s quantum theory. Bohr’s theory of hydrogen atom; failure of Bohr’s model. Postulate of quantum chemistry; Heisenberg’s uncertainty principle; Davison and Germer experiment. Operator algebra; linear, differential and Hermitian operator; Hamiltonian operator; angular momentum; eigen values and eigen functions. Wave equation – time-independent and time-dependent Schrodinger’s
wave equation. Particle–in–a–box (1D & 3D); rigid rotator; harmonic oscillator and hydrogen atom, including shapes of atomic orbitals; orbital and spin-angular momenta; tunnelling.
Approximation method of quantum mechanics: Variational principle and its application to hydrogen molecule. Perturbation theory up to second order in energy and its applications.
Atomic structure and Spectroscopy: Term symbols, RS and jj coupling, spectra of hydrogen, many electron systems and anti-symmetry principle.
Chemical bonding in diatomic: Elementary concepts of MO and VB theories, Huckel theory conjugated pi electron system (ethylene, butadiene and benzene).
Chemical applications group theory: Symmetry elements, symmetry operations, point groups, their symbols, character tables (C2v, C2h, C3v and C4v), reducible and irreducible representation, great orthogonality theorem and its consequences. Applications of group theory in vibrational spectroscopy, symmetry aspects of molecular vibrations, symmetry selection rules for IR and Raman spectra. Determining symmetries of normal modes of vibration. Symmetry applied to MO theory and orbital hybridization.
Molecular spectroscopy: Spectrum, electromagnetic radiation and its properties, regions of electromagnetic spectrum and their uses, rotational and vibrational spectra of diatomic, Born-Oppenheimer approximation. UV-Visible spectroscopy – principle, Beer-Lambert’slaw, instrumentation, types of electronic transitions, chromophore and auxochromes. Absorption bands and intensity, factors governing absorption maximum and intensity. UV-VIS spectra of simple organic compounds such as alkenes, phenols, anilines, carbonyl compounds and 1,3-diketones.
IR spectroscopy: Principle, regions of IR, selection rule of IR, modes of vibration of diatomic, triatomic linear (CO2) and nonlinear molecules (H2O); types of molecular vibration, application of IR spectroscopy, overtones, IR regions of alcohols, aldehyde, ketones. Raman spectroscopy – Principle, types of stokes and anti–stokes lines. Raman shift – difference between Raman and IR spectroscopy, mutual exclusion principle, vibrations of CO2 molecule, dipole moment and polarizability.
Electronic spectra: Theory of ESR spectra, position of ESR absorption, g and A factor, hyperfine structure, ESR spectra of simple carbon centered free radicals – CH3, CD3 electronic spectra of diatomic molecule – Morse function and Frank Condon principle and basic principles of magnetic resonance spectroscopy.
Chemical thermodynamics: Scope and limitations of thermodynamic system, surroundings and boundary – types of system, extensive and intensive properties; thermodynamic processes – state functions, enthalpy, entropy and internal energy; concept of work and heat, heat capacity, molar heat capacity, first law of thermodynamics and its mathematical expressions. Hess’s law of constant heat summation – enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution.
Reversible and irreversible process: Spontaneity of processes, criteria for spontaneity with respect to ΔS of the universe and ΔG of the system. Second law of thermodynamics, Clausius’s statement and Kelvin – Planck’s statement. Third law of thermodynamics and zeroth law of thermodynamics. Joule – Thomson effect, Inversion temperature, Maxwell’s relations, Carnot theorem, Gibbs free energy and Helmholtz work function and Nernst heat theorem.
Unit IV: Classical thermodynamics: Partial molar properties, chemical potential, Gibb’s-Duhem equation. Determination of partial molar quantities, Thermodynamics of real gases, fugacity – determination of fugacity by graphical and equation of state methods, dependence of temperature, pressure and composition, Thermodynamics of ideal and non-ideal mixtures. Activity and activity coefficients.
Statistical thermodynamics: Concepts of statistical thermodynamics, distinguishable and non-distinguishable particles. Assemblies, ensembles, canonical particles. Boltzmann distribution, Bose-Einstein, Fermi-Dirac statistics, comparison and application; kinetic theory of gases, partition function and their relation to thermodynamic quantities, calculation for model systems.
Phase Rule: Phase, degree of freedom, component, One component system, watersystem – triple point – two componentssystem, reduced phase rule – eutectic temperature – lead & silver system – congruent and incongruent melting point– Zn & Mg system – NaCl & Water system – CST – Phenol & water system. Henry’s law – Raoult’s law – Nernst distribution law – solvent extraction – steam distillation – fractional crystallization – Parke’s process.
Colloids and Surfaces: Stability and properties of colloids, gold number, types of adsorption, Freundlich’s and Langmuir’s adsorption isotherms and surface area; heterogeneous catalysis.
Unit V: Chemical kinetics: Empirical rate laws and temperature dependence, Rate of reaction, order of a reaction, examples and rate equations for zero order, first order, second order and third order reaction. Molecularity of a reaction –unimolecular and bimolecular reaction, half-life period. Theories of reaction rates – collision theory, kinetics of collision theory, failure of collision theory, modification of collision theory, Lindeman theory, Hinshelwood theory and transition state theory/absolute reaction rate theory (ARRT). Potential energy surfaces and reaction coordinates. Study of complex reactions – kinetics of reversible, parallel, consecutive and chain reactions, photochemical reactions (H2-Br2), steady-state approximation, Stern-Volmer equation. Reactions in solutions – cage effect, primary and secondary salt effects, kinetic isotropic effect, linear free energy relationships, Hammett and Traft equation. Kinetic methods of analysis – flow techniques, stopped-flow and continuous-flow techniques, pulse methods, flash photolysis and pulse radiolysis. Relaxation theory and relaxation technique – kinetic of relaxation methods (T-jump and P-jump). Ionic liquids and its applications. Catalysis – homogeneous catalysis, acid-base catalysis, protolytic and prototropic mechanism, acidity function. enzyme catalysis –Michaelis-Menten kinetics, types of inhibitor in enzyme catalysis.
Electrochemistry: Faraday’s laws of electrolysis; specific, equivalent and molar conductance, measurement of conductance. Variation of conductance with dilution for strong and weak electrolytes. Kohlrausch law and its applications. Ostwald’s dilution law, transport number and its determination by Hittorf method and moving boundary method. Debye-Huckel theory.
Electrochemical cells – cells types, galvanic cells, reversible and irreversible cells, electrode potential, oxidation potential, reduction potential, Nernst equation, redox systems.
Ion-ion interaction and activity coefficient – concept of ionic atmosphere, derivation of Debye-Huckel limiting law, verification and experimental validity. Ion-transport in solution – electrolytic conductance, derivation of DebyeHuckel-onsagar equation and experimental validity, first and second Wien effect. Ion-association – Bjerrum treatment of ion association, factors influencing ion association, effect of ion association on conductivity and activity coefficient of electrolytes in solution and triple ion formation.
Electrodics – electrode-electrolyte interface, electrical double layer – HelmoltzPerrin, Gouy-Chapman and stern models and its comparison. Electrocapillary phenomena and electrocapillary curves, Lippmann equation, electrocapillary maximum, electrokinetic phenomena, Zeta potential and its applications. Electrode kinetics Bulter-Volmer equation for one-step electron transfer, high field approximation, Tafel equation, high and low over potential limits, ionic equilibria, conductometric and potentiometric titrations. Electrochemical energy
systems – primary and secondary cells, fuel cells, types of fuel cells, batteries– primary and secondary batteries, lead acid storage battery, liquid lithium-ion batteries, solid-state sodium-ion batteries.
Solid state: Classification of solids, isotropic and anisotropic crystals, unit cell and space lattice, Miller indices for lattice planes, crystal structures, diffraction of X-rays by crystals, Bragg’s law and its applications. Defects of crystals and band structure of solids.
Polymer chemistry: Polymerization – types of polymerization, mechanism of free radical, anionic and cationic polymerization. Polymers molecular weight determination. Preparation, properties, uses of thermoplastic and thermosetting polymers. Elastomers, vulcanization and molding methods of polymers.
Organic Chemistry :-
Unit VI : IUPAC nomenclature: Organic molecules including regio and stereoisomers
Principles of stereochemistry: Configurational and conformational isomerism in acyclic and cyclic compounds, stereogenicity, stereoselectivity, enantioselectivity, diastereo selectivity and asymmetric induction. Geometrical isomerism resulting from double bonds – E, Z system of nomenclature, monocyclic compounds and fused ring systems, stereo specific
and stereo selective reactions with examples.
Aromaticity: Benzenoid and non-benzenoid compounds, generation and reactions.
Organic reactive intermediates: Generation, stability and reactivity of carbocations, carbanions, free radicals, carbenes, benzynes and nitrenes. Organic reaction mechanisms involving the addition, elimination and substitution reactions with the electrophilic, nucleophilic or radical species. Reaction pathways determination.
Common named reactions and rearrangements – Still Coupling, Heck reaction, Pusond-Kahn Reaction, Suzuki Coupling, Mitsunobu reaction, BaylisHillman reaction, Mukiayama’s reaction, Metathesis reaction. Nef reaction, Henry reaction, Ritter reaction. Pinacol-Pinacolone, Wagner-Meerwein, Demjanov, dienone-phenol, Favorskii, Baeyer-Villiger, Wolff, Wittig, Neber, Stevens, Hofmann, Lossen, Curtius, Beckmann, Benzidine and Von Richter rearrangements. Applications in organic synthesis.
Polarimetry: Circular dichroism, Optical Rotatory Dispersion, principles and applications.
Unit VII: Organic transformations and reagents: Functional group inter-conversion including oxidations and reductions. Common catalysts and reagents (organic, inorganic, organometallic and enzymatic), organic transformations in Chemo, regio and stereo selective reactions.
Concepts in organic synthesis: Retro-synthesis, disconnection, synthons, linear and convergent synthesis, umpolung of reactivity and protecting groups. Regioselectivity and chemoselectivity. Alkene synthesis-uses of acetylenes. Two group C-C disconnections in 1,2; 1,3; 1,4; 1,5 difunctional substituents, DielsAlder reactions, Regio and stereo control in carbonyl condensation, Michael addition and Robinson annulations.
Asymmetric synthesis: Chiral auxiliaries, methods of asymmetric induction, substrate, reagent and catalyst controlled reactions, determination of enantiomeric and diastereomeric excess. Enantiomeric discrimination, resolution, kinetics and optical studies
Pericyclic reactions: Electrocyclisation, cycloaddition, sigmatropic rearrangements and other related concerted reactions. Principles and applications of photochemical reactions in organic chemistry.
Synthesis and reactivity of common heterocyclic compounds containing one or two heteroatoms: Furan, thiophene, pyrrole, pyridine, quinoline, isoquinoline, indole, flavins and anthocyanins. Chemistry of natural products– Carbohydrates (Maltose, Starch, Cellulose) proteins and peptides, fatty acids, nucleic acids, terpenes, steroids (Chloesterol, Oestrone, Progresterone) and alkaloids (Reticulene, Reserpine, Morphine). Biogenesis of terpenoids (Zingiberene, Squalene, Lanosteroal).
Biopolymers: Structure and functions of proteins and Nucleic acids. Mechanism of Enzyme action on DNA and RNA.
Theory and spectral interpretations – Structure determination of organic compounds by IR, UV-Vis, 1H & 13C NMR and Mass spectroscopic techniques.
Analytical Chemistry :-
Unit VIII: Data analysis: Nature of quantitative measurements and treatment of data. Mean, median, precision and accuracy, standard deviation, significant figures, Gaussian distribution curves, Null Hypothesis, Confidence interval of mean, Rejection of data (Q test), Student’s t, F tests. Errors – absolute and relative errors, linear regression, covariance and correlation coefficient.
Sampling: Principles of sampling methods for solid, liquids and gases. Gross sampling, Sampler’s responsibility and pitfalls, hazards of sampling
Separation Techniques: Classical forms of chromatography – Introduction, principle and applications of column, thin layer chromatography and paper chromatography, Gas and High-Performance Liquid Chromatography.
Thermo analytical techniques: Principles and applications of TGA, DTA and DSC.
Unit IX: Instrumental Analysis: Fluorimetry – Principles of fluorescence, Instrumentation and its Applications. Turbidimetry and Nephelometry – Theory, instrumentation
and its applications.
Emission spectrometry: Principle, instrumentation and interferences, determination of alkali metals and iron in non-ferrous alloys. Flame Photometry –Theory, Instrumentation and a few important applications, Emission Techniques– Theory, techniques of excitation, electrodes and their shapes, flame and plasma emission spectrometry – instrumentation and its applications. Atomic Absorption Spectrometry – Theory, instrumentation (flame and flameless atomization) and its applications
Mossbauer spectroscopy: Introduction, principle, instrumentation, recoil energy, Doppler effect, number of MB signals, isomer shift, quadrupole splitting, magnetic hyperfine splitting applications.
NMR spectroscopy: Nuclear spin states, NMR active nuclei, nuclear magnetic moment, Larmor equation. Absorption of energy and resonance, population density of nuclear spin states, saturation phenomena, relaxation mechanisms, Bloch equation (only significance and derivation, not required). Comparison of CW and FT NMR instrument. Chemicalshift – Standardsin NMR, Shielding and
De-shielding, Spin-spin coupling, splitting origin and rules – factors affecting coupling constant
Unit X: Nano Chemistry: Basics, nanoparticlesand nanomaterials, types of nanoparticles, preparation, properties and uses of nanoparticles. Carbon nanomaterials –nanotubes, nanorods and nanofibre. Porous solids – nanowires, nanomachines and quantum dots. Methods of nanomaterials synthesis.
Chemical Microscopy: Microscope – parts and optical path application and qualitative study. Electron Microscopy – Principle, Microscope and its operation, sample preparations, applications to analysis, electron probe analyzer, ion microscopy, SEM, TEM, EDS. Fluorescence microscopy – Confocal, Phase contrast SPM, AFM, STM, MFM, EFM. XPS – Electron spectroscopy for Chemical Analysis (ESCA), Principle, Instrumentation, Auger electron spectroscopy – Theory, Principle, instrumentation and general applications – qualitative analysis and depth profiling of solid surfaces
Green chemistry: Principles and Concepts of Green Chemistry, green solvents, super critical CO2. Waste minimization techniques Green catalysis.
Environmental Chemistry: Scope and importance, renewable resources, solar, wind, hydrothermal and tidal energies. Polymers, plastics and its harmful environment effects. Pollution effects on human health.
Supramolecular Chemistry: Nature of supramolecular interaction, host-guest interaction, molecular recognition and its types, self assembly, cation binding hosts, cation, anion and neutral receptors, crown ethers, clathrates and its applications.
Medicinal chemistry: Drug and drug metabolism, mechanism of different types of drug actions, common disease, disorders and their treatment methods. Blood and clinical tests – estimation of blood urea, cholestral, sugar, Fe protein, cholesterol, albumin, vitamins and minerals. Medicinally important compounds and disease caused by deficiency of vitamins.
Education Methodology :
Unit I PERSPECTIVES OF EDUCATION :
Pre-primary Education – Universalisation of Elementary Education (UEE) –Primary Education – Equalization of Education opportunities – Secondary and Higher Education – SSA, RMSA, Samagra Shiksha, RUSA – Uniform Pattern of Education – RTE Act, 2009 – Formal, Non-formal and In-formal – Enrolement, Stagnation, Dropouts - Functional Literacy Programme – Open Schooling– Delinking degrees from employment –– Brain drain Vocationalisation of Education – Skill Development.
Education of the Socially Disadvantaged Groups: Tribal, Scheduled and Marginalized groups – Special and Diverse needs of learners – Inclusive education – Universal Design of Learning - Barriers in Education – Challenges in affordability and accessibility of Education – Commissions and Committees in Education (Pre-Independence, Post-Independence) - Constitutional Provisions - Socialism, Secularism, Democracy, Sovereign and Egalitarian State - Central and State Government Policies related to Education.
Unit II PHILOSOPHICAL AND SOCIOLOGICAL FOUNDATIONS OF EDUCATION :
Philosophical bases of Education – Metaphysics, Ontology, Epistemology, Axiology – Schools of thought: Idealism, Naturalism, Realism, Pragmatism– Propounding Indian Philosophers (Gandhiji, Tagore, Vivekananda, J.Krishnamurti, Aurobindo) and Western Philosophers (Plato, Russell, Pestalozzi, Rousseau, Froebel, Montessori, Dewey) in Education – Innovations emerged from experiments in education.
Sociological bases of Education – Socialization, Social Stratification, Mobility, Social Justice & Social Change – Sociologists (Auguste Comte, Max Weber, Marx, Durkheim, Spencer, Paulo Freire) – Education for International and National understanding – Peace, Value and Environmental Education – Liberalization, Privatization and Globalization in Education - UN-Sustainable Development Goals (SDGs) – Physical and Health Education – Gender perspectives in Education.
Unit III HISTORY AND CULTURE OF TAMIL NADU :
Historical development, Role of Social and Political movements in Education –Initiatives for development: Establishment of State Universities and Educational Infrastructure – Developmental aspects: Professional Education (Medical, Engineering, Law, Teaching, Physical and Sports), Liberal Arts, Social Sciences and Humanities –– Tamil Literature, Tradition & Culture: Art & Architecture – Historical sites – Ethnic groups of Tamil Nadu – Freedom fighters & Women leaders of social transformation of Tamil Nadu.
Unit IV CHILDHOOD & ADOLESCENCE :
Psychology of Childhood & Adolescence – Stages of development (Early & Later childhood & Adolescence) – Adolescent characteristics - Dimensions of development (Cognitive, Physical, Psycho-Social, Emotional, Language, Moral) – Theories: Piaget, Bruner, Erik Erickson, Daniel Goleman, Kohlberg)– Developmental tasks and mental abilities – Individual differences –Understanding Learners (Slow and Late-bloomers, Children with Special Needs (CWSN) – Programmes for Diverse learners (Differentiated, Mediated, Remedial & Enrichment)
Unit V LEARNING AND TEACHING :
Learner, Learning Process and Learning characteristics – Factors contributing to learning: Biological, Psychological, Socio-economic & Cultural - Memory, Remembering and Forgetting – Learning Curve – Paradigms: Behaviourism, Cognitivism, Constructivism, Humanism, Connectivism - Theories of Learning: Trial & Error (Thorndike), Classical Conditioning (Pavlov), Operant Conditioning (Skinner), Insight (Wolfgang Kohler), Gestalt theory – Transfer of learning. Significance of Language in understanding curriculum and subjects – Psycholinguistic - Types of Learning – Micro-Teaching: Skills & Components – Lesson Planning – Learning Styles: Visual, Auditory, Kinesthetic and Reading - Teaching styles: Autocratic and Permissive – Teaching approaches: Teacher and Student centered, Hybrid approaches – Outcome Based Education – Methods of Teaching (Inductive, Deductive, Analytic, Heuristic, Project) – Models of Teaching: Concept Attainment, Advanced-Organizers, Inquiry-Training) – Teacher Attributes – Teacher autonomy and accountability.
Unit VI INTELLIGENCE & PERSONALITY :
Psychological attributes: Cognitive abilities, Attention, Interest, Motivation, Aptitude & Attitude, Value systems, Maslow’s hierarchical theory of Human Needs – Achievement Motivation - Intelligence Basics & Theories (Single, Twofactor, Triarchic, Group-Factor, Multi-Factor, Guilford’s Structure of Intellect, Gardner’s Multiple Intelligence and Emotional Intelligence) – Creativity and Intelligence – IQ & EQ – Assessment of Intelligence – Understanding Learning difficulties and Learning disabilities (Dyslexia, Dyscalculia, Dysgraphia,
Dyspraxia) Personality – Trait theories: Allport , R.B.Cattell, Eysenck, Type: Hippocrates, Krestchmer, Sheldon, Carl Jung, Spranger – Assessment of Personality – Mental Health & Mental Hygiene : Conflict & Frustration, Unrest – Adjustment: Defense mechanisms – Guidance and Counselling .
Unit VII EDUCATIONAL EVALUATION :
Test, Measurement, Assessment & Evaluation – Principles of Evaluation -Characteristics of Test: Objectivity, Reliability, and Validity – Types: Formative, Summative, Norm and Criterion Referenced Test –– Scholastic & NonScholastic - Achievement Test – Diagnostic and Prognostic Tests – Continuous and Comprehensive Evaluation - Standardization of an achievement test - Table of weightages, Blue Print, Preparation of Question Paper, Scoring key, Item analysis (Index of Difficulty & Discrimination), Reliability – Tools for assessment: Observation, Interview, Portfolio, Rubrics, Peer-Reviews, Checklists, Rating Scales.
Unit VIII MANAGEMENT & ADMINISTRATION
Principles of Management – Structure of Educational management (Central, State & Local levels) – Personnel, Material and Financial management: Functions (POSDCORB) - SWOC Analyses in Educational Administration – Total Quality Management (TQM) – Assessment and Accreditation of Educational Institutions– Leadership theories and styles – Role of Administrators, School Heads, Teachers and Stakeholders in Planning and Administration.
Unit IX CURRICULUM DESIGN AND DEVELOPMENT
Principles of Curriculum, Curriculum patterns (Teacher, Learner, Problem, Subject, Activity/Experience, Broad-field) – Types (Core, Competency-Based, Null, Hidden, Rhetoric) – Approaches to Curriculum Organisation (Topical Spiral, Logical, Psychological, Unitary & Integrated) – Curriculum Development process - Models of Curriculum (Ralph Tyler, Wheeler, Hilda Taba, Stufflebeam)– Curriculum Evaluation.
Unit X :INSTRUCTIONAL AND EDUCATIONAL TECHNOLOGY:
Bloom’s and Revised Taxonomy of Educational Objectives - Levels of Teaching (Memory, Understanding & Reflective) – Instructional designing – Programmed learning (Principles, Types: Linear, Branched) – Systems approach – ADDIE Model - Cybernetics – TPACK - FOSS- OER – MOOCs - Learning Management Systems (LMS) - Smart Classroom, Blended Learning, Flipped Learning – Augmented Reality - Virtual Modes (O-labs, Classrooms, Library) – Virtual Reality – AI in Education.
General Knowledge :
Unit I HISTORY OF INDIA : Indus Valley Civilisation – Vedic Period- Buddhism and Jainism- Mauryan Empire-Guptas; Delhi Sultanate- Age of Vijayanagaram-Mughals and Marathas; Arrival of Europeans- Early uprising against British rule-English Education and Its impact- Westernisation and Modernisation-Birth of Indian National Congress– Freedom Struggle.
Unit II HISTORY OF TAMIL NADU : Archaeological discoveries - Sangam literature; Pallavas – Imperial Cholas and Later Pandyas- Nayaks-their contribution to art and Architecture; Palayakar revolt against British Rule-Role of Tamil Nadu in freedom struggle-Justice Party-Self-Respect Movement- Dravidian Movement.
Unit III INDIAN POLITY : Preamble to the Constitution - Fundamental Rights, Directive Principles of State Policy-Centre-State Relations-Judiciary in India-Empowerment of Women–Rights of Transgender.
Unit IV GEOGRAPHY : Salient features of Physical geography of India; Distribution of key natural resources; Geographical phenomena such as earthquakes, tsunami, cyclones.
Unit V GENERAL SCIENCE : Scientific knowledge and scientific temper-Main concepts of life science; evolution, nutrition, health and hygiene, human diseases; Environment and Ecology.
Unit VI CURRENT AFFAIRS AND SPORTS : Recent achievements in national and international sports-contributions of eminent authors.
Unit VII INDIAN ECONOMY : Planning, Mobilisation of resources, growth, development and employment; Major crops-cropping patterns in various parts of the country; e-technology in the aid of farmers.
Unit VIII SCIENCE AND TECHNOLOGY :
Latest inventions in science and technology. Indigenisation of technology and developing new technology; achievements of Indians in science and technology; application of Science and Technology in the area of IT, Space, Computers and Robotics.
Unit IX APTITUDE AND MENTAL ABILITY :
Simplification- Percentage – Highest Common Factor (HCF)- Lowest Common Multiple (LCM)- Ratio and Proportion- Simple Interest- Compound Interest— Area-Volume- Time and Work.
Unit X ABBREVIATIONS : Commonly used acronyms and abbreviations of national and international organisations and institutes, as well as major government schemes.
TN TRB PG Assistant (Chemistry) Exam Pattern 2026
Part B: Main Subject (Objective type - OMR Based)
Duration : 180 Minutes
Duration : 180 Minutes
| S.No | Subject | No.of Question | Marks |
| 1. | Main Subjects (Chemistry) | 110 | 110 |
| 2. | Education Methodology | 30 | 30 |
| 3. | General Knowledge | 10 | 10 |
| Total | 150 | 150 |
Exam Date : Notified Soon
Starting Date of Application Form : Notified Soon
Last Date of Application From : Notified Soon
Starting Date of Application Form : Notified Soon
Last Date of Application From : Notified Soon
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