PG TRB Chemistry Question Papers

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The answer key of the TRB PGT Chemistry Question Paper conducted on 21.7.2013 is as follows:

PG TRB Chemistry Answer Key





Syllabus PG TRB Chemistry

Unit-I
Periodic properties – Atomic radius – ionic radius, ionization potential, electron affinity and
electronegativity – Their significance in chemical bonding.
VB theory, MO theory – applications – Comparision of VB and MO theories – VSEPR theory –
Bond order – Bond energy – Bond length Bond polarity – Partial ionic character of bonds – The concept
of multi-centre bond – Electron deficient compounds – Hydrogen bond – Its influences.
Non aqueous solvents – A general study of typical reactions in non aquieous media – comparison
with reactions in aqueous media.
Solid state chemistry – Ionic bonding – Lattice energy – Born equation – Born Haber cycle –
Radius ratio rule – Born Meyer equation – Kapustinski’s Modification – energetics of the dissolution of
ionic compounds in polar solvents – different types of electostatic interactions.
Structural aspects of solids – Fourier synthesis and analysis structure factors – scattering factors –
Spinels and Inverse spinels – defects in stoinchiometric and Non stoichiometric crystals.
Electrical properties of solids – Band theory semi conductors – Junction devices – Super
conductivity – Ionic conductivity – Optical properties of solids – Lasers and phosphors – Photovoltaic
effect – solar energy.
Magnetic properties of solids – Different types – dia, para, ferro, antiferro and ferri Magnetism –
Magnetic hysteresis.
Unit II
Co-ordination chemistry – Methods of preparation of complexes – isomerism in complexes –
applications of complex formation in analytical chemistry – complexes and their stability chelate effect
Stability constants – Their determination – complexes of Metals in different oxidation states and their
stability.
Optical activity and concept of chirality – Different kinds of opticalloy active compounds –
configuration – Foscher, sawhorse and Newman projections – Absolute configuration R and S Notations
– Methods with more than one chiral center – Asymmetric synthesis – optical purity.
Geometrical isomerism resulting from double bonds – The E.Z. system of nemenclature –
Geometrical isomerism of monocyclic compounds and fused ring systems – Sterospecific and stereo
selective reactions with examples.
Confermational analysis – conformation and reactivity in acylic and cyclo – hexane systems –
conformation of decalins, cyclohexane and cyclohexanone.
Unit III
Organic reaction mechanisms – General methods of investigating reaction mechanisms – kinetic
and non-kinetic methods – different types of reaction intermediates.
Aliphatic nucleophilic substituion SN1, SN2 and SNi reactions – substitution at vinylic and
benzylic carbon – stereo chemistry of nucleophilic reaction – solvents and substituent effects –
Nucleophilicity Neighboring group participation.
Addition to double and triple bonds – Mechanism Hydration – Hydroboration – Hydroxiylation –
epoxidation.
Elimination reactions E1, E2, E1cB Mechanism – Orientation effects in elimination reactions –
stereo chemistry of elimination reactors - dehydration of alcohols – dehydro halogenation – cope
elemination.
Heterocyclics – synthesis and reactivity of furan, thiophene, pyrrole pyridine, quinoline,
isoquinoline, Indole, flavenes, and anthocyanins – skraup synthesis – Fischer indole synthesis.
The chemistry ;of natural products structure elucidations and Biogenesis of the following:
Alkaloids : Reticulene, Reserpine, Morphine
Terpenoids : Zingiberene, Squalene, Lanosteroal
Steroids : Cholesterol, Oestrone, Progresterone
Carbohydrates: Maltose, Starch, Cellulose (biogenis not expected)
Structure and functions of biopolymer such as proteins and Nucleic acids – Primary, Secondary and
tertiary structures of proteins – Mechanism of Enzyme action – DNA and RNA.
Unit IV
The old quantum theory – Inadequacy of classical mechanics – Failure of classical mechanics –
success of quantum hypothesis explaining black body radiation – Photo electric effect – the hydrogen
spectrum – Bohr’s explanation of hydrogen spectrum – Failure of Bohr’s model.
De broglie’s postulates of Matter waves – experimental observation of matter waves –
Heisenberg’s uncertainly principle – wave particle dualism – Davisson, Garmer experiments – Postulates
of quantum mechanics – Time dependent schrodinger equation – Needs of an acceptable wave function –
Physical significance of Psi function.
Operators in quantum mechanics. Operator algebra – Linear and Hermitian operators –m Eigen
functions and Eigen values – Hamiltonian operators – Angular momentum.
Application of schrodinger equation – particle in one and three dimensional boxes – quantum
mechanical results for a simple harmonic oscillaltor and rigid rotator - approxination methods –
perturbation methods – variation method – VB and MO methods.
Symmetry elements and symmetry operations – Point groups – representation of groups reducible
and irreducible representations characters tables – Orthogonality theorem and its consequences.
Symmetry selection rule for IR and Ramanspectra – Systematic procedure for determining
symmetries of normal modes of vibration – symmetry applied to MO theory and orbital hybridization.
Unit V
Thermodynamic equations of state – closed and open systems – partial molal quantities –
chemical potential with temperature and pressure – third law of thermodynamics.
Fugacity – methods of determination – activity and activity co-efficient – standard states for gases,
liquids – solids and solutions – mean activity co-efficients of electrolytes.
Maxwell’s distribution of molecular velocities – derivation of expression for average, most probable and
rcot mean square velocities – Microstates Macrostates – partial functions – Sackur tetrode equation –
statistical approach to the third law of Thermodynamics – Maxwell Boltzmann – Bose Einstein and Fermi
Dirace statistics – Heat capacities of solids – Einstein and Debye Models Low temperature – Negative
absolute temperature.
Chemical equilibrium – thermodynamic derivation of equilibrium constant – standard free energy
– calculations.
Phase equilibrium – thermodynamic derivation of phase rule application of phase rule – three
component systems.
Chromotography – column, paper, thinlayer, gas-liquid, High pressure liquid chromatography
HPLC principle and applications.
Thermal analysis – different thermal analysis (DTA) – Principle and applications –
thermogravimetric analysis (TGA) Principle and application.
Chemical crystallography – Diffraction methods – X ray Neutron, electron diffraction methods.
Principle and applications.
Polarimetry – Circular ichroism – Optical Rotatory dispersion (ORD) Principle and applications.
Unit VI
Nuclear – chemistry – Nuclear nadii spin and moments – Nuclear structure – Nuclear forces –
Nuclear stability – Nuclear modes – Modes of Radioactivity decay. Nuclear isomerisation Nuclear
Reaction Energy – Coulomb barrier cross section – excitation function – Radiactive Equiliberia – Types
of Neclear reactions – Nuclear fision Nuclear Reactors – Atomic Power Project in India – Radiation
hazards – Radiation desimetry – Nuclear fusion – Stellar Energy.
Application of Radioactivity – Tracer Techniques – Neutron -
Activation analysis – Isotope Dilution Analysis – Interaction of radiation with matter – Range of alpha
and beta particles – Absorption co-efficient,.
Orgnometallic compounds – Metallecences – Arene complexes – Nonaromatie olefins and
acetylenes complexes – catalysis by organometallic compounds Wilkinson’s catalyst – Oxoprocess –
wecker process – Ziegler – Natta catalysis.
Inorganic photo chemistry – Photochemical reactions of coordination and organ metallic
compounds – Properties of excited states – charge transfer photo Oxidation, photo reduction, photo
substitution, photo isomerisation - Photo chemical conversion – Solar energy.
Unit VII
Term symbols and term states – Dn - ions energy levels – Diagrams weakfield and strong field and
strong field concepts – spin orbit coupling – The Nephelanxetic effect charge transfer spectra –
Applications of UV, IR, NMR, BSR and mossbaver spectroscopy techniques in the study of co-ordination
chemistry.
Magnetic interactions – Magnetic susceptibilities determination – application in co-ordination
chemistry. Application of VB, MO, CF and LF theories in co-ordination chemistry – Group theoretical
approach – splitting of d-orbitals – spectro-chemical series – concept of weak and strong fields –
Thermodynamic and chemical effect of d-orbitals splitting – Jahn Teller distortion.
Nuclear Magnetic Resonance Spectroscopy – Theory – Study of PMR – chemical shift – Type of
shielding – Spin-spin coupling spin decoupling – spplications to simple natural products.
Electron spin resonance spectro scopy – paramagnetism – Nuclear hyperfine structure – Hyperfine
coupling.
Unit VIII
Huckel’s rule and concept of aromaticity – aromaticity of Benzenoid – Nonbenzenoid aromatics. The
annulenes - Aromaticity in charged rings and fused ring systems. Aromatic electrophilic substitution –
Mechanism and reactivity, Typical reactions to include diazonium coupling – Halognation, sulphonation.
Friedal craft alkylation and acylation. Aromatic Nucleophilic substitution – Benzyne mechanism –
Examples. Oxidation – Reduction reactions – Mechanisms – selectivity in oxidations and reductions.
Molecular rearrangements – Rearrangements with Carbon to Nitrogen, Carton to Oxygen and
Carbon migrations. Curtivs, Lossen, Schmitts Baeyer – Villiger, Pinacol – Pinacolene, Benzoil –
Benzilicacid, Benzidine, Favorski and fries rearrangements – sigmatropic rearragements – claisen and
cope. Pericyclic reactions, selection rules – orbital symmetry – Electrocyclic reactions – cycle additions
sigmatropic reactions.
Modern synthetic reactions – Diels alder reaction witting reactions – stork Enamine reactions –
Mannich reactions, Birch reductions.
Unit IX
Theories of reaction rates – simple collision theory – absolute reaction rate theory (ARRT) –
Reaction co-ordinate – Potential energy surfaces. Hammett – Taft equation – Hammett acidity function –
Acid base catalysis Bronsted relation Enzyme catalysis – Michaelis Menton Law – influence of PH and
temperature. Surface phenomenon – Heterogeneous catalysis – Absorption isotherms. Electrolytic
conductance – applications – solubility product – Interionic attraction theory – Debye – Huckel – Onsager
equation – equivalent conductivity of electro lytes.
Electro potentials – Electrochemical cells – electrode – electrolyte interface – electrical double
layer electro capillary phenomena – electro kinetic Phenomena – Membrane potential – Polarisation –
over potential – Polarography – concentration polarization – electro chemical polarization – sutler –
Volmer equation.
Unit X
Theory and applications of the following spectroscopic methods; electonics spectra-UV-Visible
spectra – IR spectra – Raman spectra – Laser – Raman spectra – NMR – WCR- ESR Spectra –
Mossbaver spectro scopy – photoelectron spectro scopy – Poly
merisation reactions – Mechanism – sterochemical aspects. Types of polymers – organic and inorganic
polymers – preparation – properties – structure – polystyrene – Polyvinylchloride – Polyesters – Nylon –
Phenol resin – amino resins – epoxy resins. Phosphonitrilic compounds – silicons – Borazines
applications of polymers.