Saturday, April 23, 2011

Chemistry Preliminary

                                                            CHEMISTRY
 Section-A (Inorganic Chemistry)
 1. Atomic structure: Schrodinger wave equation, significance of Ψ and Ψ2 quantum numbers and their significance, radial and angular probability, shapes of orbital’s, relative energies of atomic orbitals as a function of atomic number. Electronic configuration of elements; Aulbau principle, Hund’s multiplicity rule, Pauli Exclusion Principle.
 2. Chemical periodicity: Periodic classification of elements, salient characteristics of s, p, d and f block elements. Periodic trends of atomic radii, ionic radii, ionization potential, electron affinity and electro negativity in the periodic table
3.Chemical bonding: Types of bonding, overlap of atomic orbital’s, sigma and pi bonds, hydrogen and metallic bonds. Shapes of molecules, bond order, bond length, V.S.E.P.R. theory and bond angles. The concept of hybridization in the periodic table
4. Oxidation states and oxidation number: Oxidation and reeducation, oxidation numbers, common redox reactions, ionic equations. Balancing of equations for oxidation and reduction reactions.
 5. Acids and bases: Bronsted and Lewis theories of acids bases. Hard and soft acids and bases. HSAB principle, relative strengths of acids and bases the effect of substituent’s and solvents on their strength.
 6. Chemistry of elements:
 (i) Hydrogen: Its unique position in the periodic table, isotopes, ortho and Para hydrogen, industrial production, heavy water.
 (ii) Chemistry of s and p block elements: Electronic configuration, general characteristic properties, inert pair effect, allotropy and catenation. Special emphasis on solution of alkali and alkaline earth metals in liquid ammonia.Preparation,Properties and structures of boric acid, borates, boron nitrides, borohydride (diorama), carbonates, oxiders and oxyacids of nitrogen, phosphorous, sulphur and chlorine; interhalogen compounds, polyamide ions, pseudohalogens, fluorocarbons and basic properties of halogens. Chemical reactivity of noble gases, preparation structure and bonding of noble gas compounds.
(iii) Chemistry of d block elements: Transition metals including lanthanides , general characteristic properties , oxidation states, magnetic behavior , colour.First row transition metals and general properties of their compounds (oxides, halides and sulphides); lanthanide contraction.
 7 .Extraction of metals: Principles of extraction of metals as illustrated by sodium magnesium aluminum, iron, nickel, copper, silver and gold.
 8. Nuclear Chemistry: Nuclear reactions; mass defect and binding energy, nuclear fission and fusion Nuclear reactors; radio isotopes and their applications.
 9. Coordination compounds: Nomenclature, isomerism and theories of coordination compounds and their role in nature and medicine
 10. Pollution and its control: Air pollution, types of air pollutants; control of air and water pollution; radioactive pollution
 Section-B (Organic Chemistry)
 1. Bonding and shapes of organic molecules:electronegativity, electron displacements-inductive, mesmeric and hyper conjugative effects; bond polarity ad bond polarizability, dipole moments of organic molecules; hydrogen bond; effects of solvent and structure on dissociation constants of acids and bases; bond formation, fission of covalent bonds: homolysis and heterolysis; reaction intermediates-carbocations, carbanions, free radicals and carbines; generation, geometry and stability ; nucleophiles and electrophilic.
 2. Chemistry of aliphatic compounds: Nomenclature alkanes-synthesis, reactions (free radical halogenations)- reactivity and selectivity, suphonation-detergents; cycloalkanes-Bayer’s strain theory; alkanes and alkynes- synthesis, electrophilic addition; reactions, Markownilov’s rule, peroxide effects, 1-3-dipolar addition, nucleophilic addition to electron-deficient alkenes; polymerization; relative acidity; synthesis and reactions of alkyl halides, alkanols, alkanals , alkanones, alkanoic acids, esters, amides, nitriles, amines , acid anhydrides, a,B-unsaturated ketones, ethers and nitro compounds.
3. Stereo chemistry of carbon compounds: Elements of symmetry, chiral and achiral compounds Fischer Projection formulae; optical isomerism of lactic and tartaric acids, enantiomerism and diastereo isomerism; configuration (relative and absolute);  conformations of alkanes up to four carbons, cyclohexane and dimethyl cyclo-hexanes-their potential energy D,L- and R,S-notations of compounds containing chiral centres; projection formulae- Fischer , Newman and sawhorse of compounds containing two adjacent chiral centres; meso and di-isomers, erythro and threesomes; racemization and resolution; examples of hemitropic, enantiotopic and diasteretopic atoms and groups in organic compounds, geometrical isomers;Eand Z notations. Stereo chemistry of SN1, SN2, E2 and E2 reactions
4. Organometallic compounds: Preparation and synthetic uses of Grignard reagents, alkyl lithium compounds.
 5. Active methylene compounds: Diethyl malonate, ethyl acetoacetate, ethyl cyanoacetate-applications in organic synthesis , tautomerism (keto-enol)
 6.Chemistry of aromatic compounds:aromaticity; Huckel’s rule; electrophonic aromatic substitution nitration , suplhonation, halogenations (nuclear and side chain), Friedel-Crafts alkylation and acyalation substituent’s effect; chemistry and reactivity of aromatic haliders , phenols , nitro-, diazo , diazonium and sulphonic acid derivatives, benzyne reactions.
7. Chemistry of biomolecules(i) Carbohydrates: Classification, reactions, structure of glucose D,L,-configuration , osazone formation; fructose and sucrose; step-up  step-down of aldoses and ketoses , and their interconversions,(ii) Amino acids: essential amino acids, zwitterions, isoelectric point, polypeptides; proteins; methods of synthesis of an amino acids,(iii) Elementary idea of lils, fast, soaps and detergents.
 8. Basic principles and applications of UV, cisible, IR and NMR spectroscopy of simple organic molecules.
Section-C (Physical Chemistry)
 1. Gaseous state: Deviation of real gases from the equation of state for an ideal gas, Vander Waals and Virile equation of state, critical phenomena,princilple of corresponding states, equation for reduced state.Liquification of gases , distribution of molecular speed, collisions, between molecules in a gas; mean free path , specific heat of gases.
2. Thermodynamics:
 (i) First law and its applications: thermodynamic systems, states and processes work , heat and internal energy,Zeroth law of thermodynamics, various types of work dome on a system in  various physical and chemical processes, joule-Thomson effect, inversion temperature. Heat capacities and temperature dependence of enthalpy and energy changes
(ii)Second law and its applications: spontaneity of a process, entropy changes in various processes, free energy functions, criteria for equilibrium , relation between equilibrium constant and thermodynamic quantities
 3. Phase rule its applications Equilibrium between liquid, solid and vapours of a pure substance clausius-Clapeyron equation and its applications. Number of components, phases and degree of freedom; phase rule and its applications; simple systems with one (water and sulphur) and two components (lead-silver, salt hydrates). Distribution law, its modifications, limitatyions and applications
4. Solutions: Solubility and its temperature dependence, partially miscible liquids, upper and lower critical solution temperatures, vapour pressures of liquids over their mixtures, Raoult’s and Henry’s laws, fractional and steam distillations
5. Colligative Properties: dilute solutions and colligative properties, determination of molocular weights using colligative properties
6. Electrochemistry:lons in solutions , ionic equilibria, dissociation constants of acids and bases hydrolysis, pH and buffers, theory of indicators and acid –base titrations, Conductivity of ionic solutions, its vatiation with concentration, Ostwald’s dilution law,Kohlrausch Law and its application. Transport number and its determination.Faraday’slaws of electrolysis , galvanic cells and measurements of their e.m.f., cell reactions, standard cell, standard reduction potential , Nernst equation, relation between thermodynamic quantities and cell e.m.f., fuel cells potentiometric titrations
7 Chemical kinetics: Rate of chemical reaction and its dependence on concentrations of the reactants rate constant and order of reaction and their experimental determination; differential and integral rate equations for first and second order reaction, half-life periods; temperature dependence of rate constant and Arrhenius parameters; elementary ideas regarding collision and transition state theory
8 Photochemistry: Absorption of light, laws of photochemistry, quantum yield, the excited state and its decay by radiative, non-radiative and chemical pathways; simple photochemical reactions
9 Catalysis: Homogeneous and heterogeneous catalysis and their characteristics, mechanism of heterogeneous catalysis; enzyme catalysed reactions(Mirchaelis-Menten mechanism)
 10. Colloids: the colloidal state, preparation and purification of colloids and their characteristic properties; lyophilic and lyophilic colloids and coagulation; protection of colloids; gels. Emulsions surfactants and micelles.

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