Rajasthan Public Service Commission
RAS Pre-Syllabus: Chemistry (Code No. 05)
Atomic number, Electronic configuration of elements, Aufbauprinciple, Hund's
Multiplicity Rules, Paulis Exclusion Principle, long form of the Periodic
Classification of elements; salient characteristics of 's', 'p', 'd' and 'f'
Atomic and ionic radii, ionisation potential, electron affinity and
electronegativity; their variation with the position of the elements in the
Natural and artificial radioactivity theory of nuclear disintegration;
disintegration and displacement laws; radioactive series; nuclear bindings,
energy, nuclear reaction, fission,, and fusion, radioactive isotopes and their
Electronic Theory of Valency. Elementary ideas about sigma and pi-bonds,
hybridization and directional nature of covalent bonds. Shapes of simple
molecules bond order and bond length.
Oxidation states and oxidation numbers. Common redox reactions; ionic
Bronsted and Lewis theorise of acids and bases.
Chemistry of common elements and their compounds, treated from the point of
view of periodic classification.
Principles of extraction of metals, as illustrated by sodium, copper,
aluminium, iron and nickel.
Werner's theories of coordination compounds and types of isomerism in 6- and
4- co-ordinate complexes. Role of co-ordination compounds in nature, common
metallurgical and analytical operations.
Structures of diborane, aluminium chloride, ferrocene, alkyl magnesium
halides, dichlorodiamineplatinum and xenon fluorides.
Common ion effect, solubility products and their applications in qualitative
Electron displacements- inductive, mesomeric and hyperconjugative
effectseffects of structure on dissociation constants of acids and bases-bond
formation and bond fission of covalent bonds- reaction intermediates
carbonations, carbanions, free radicals and carbenes-nucleophiles and
Alkanes, alkenes and alkynes-petroleum as a source of organic compounds -
simple derivatives of aliphatic compounds; halides, alcohols, aldehydes, ketones,
acids, esters, acid chlorides, amides, anhydrides ethers, amines and nitro
compounds; monohydroxy, ketonic and amino acids. Grignard reagents; active
methylene groupmalonic and acetoacetic esters and their synthetic
Stereochemistry - Elements of symmerty, chirality, optical isomerism
of lactic and tartaric acids, D, L- notation, R,S- notation of compounds
containing chiral centres, concept of conformation- Fischer, Sawhorse and Newman
projections of butane-2, 3-diol geometrical isomerism of maleic and fumaric
acids, E and Z notation of geometrical isomers.
Carbohydrates - Classification and general reactions, structures of
glucose, fructose and sucrose, general idea on the chemistry of starch and
Benzene and common monofunctional benzenenoid compounds, concept of
aromaticity as applied to benezene, naphthalene and pyrole-orientation influence
in aromatic substitution-chemistry and uses of diazonium salts.
Elementary idea of the chemistry of oils, fats, proteins and vitamins, their
role in nutrition and industry.
Basic principles underlying spectral techniques (UV-visile,IR, Raman and NMR).
Kinetic theory of gases and gas laws. Maxwell's law of distribution of
velocities. Van der Vaals equation. Law of corresponding states. Specific heat
of gases, ration Cp/Cv.
Thermodynamics - The first law of thermodynamics. Isothermal and
adiabatic expansions. Enthalpy, heat capacities and thermochemistry. Heats of
reaction. Calculation of bond energies. Krichoff's equation. Criteria for
spontaneous changes, Second law of thermodynamics.Entropy. Free energy, Criteria
for chemical equilibrium,
Solutions - Osmotic pressure. Lowering of vapour pressure, depression
of freezing point and elevation of boiling point. Determiantion of molecular
weight in solution. Association and dissocation of solutes.
Chemical equilibria - Law of mass action and its application to
homogeneous and heterogeneous equilibrua; Le Chatelier principle and its
application to chemical equilibria.
Chemical Kinetics - Molecularity and order of a reation. First order
and second order reactions. Temperature coefficient and energy of activation.
Collision theory of reaction rates. Qualitative treatment of theory of activated
Electrochemistry - Faraday's laws of electrolysis, conductivity of an
electrolyte. Equivalent conductivity and its variation with dilution. Solubility
of sparingly soluble salts. Electrolytic dissociation. Ostwald's dilution law,
anomaly of strong electrolytes.
Solubility product. Strength of acids and bases. Hydrolysis of salts.
Hydrogen ion concentration. Buffer action. Theory of indicators.
Reversible cells- Standard hydrogen and calomal electrodes, Redox
potentials, Concentration cells. Ionic product of water. Potentiometric
titrations. Phase rule- Explanation of terms involved. Application to one and
two component systems. Distribution law.
Colloids - General nature of colloidal solutions and their
classification. Coagulation. Protective action and Gold number. Absorption.
Catalysis - Homogeneous and heterogeneous catalysis. Promoters and
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