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[QUOTE=ijt.Ranjani;315942][B][U]Organisation [/U][/B]: Mizoram Public Service Commission
[B][U]Announcement [/U][/B]: Syllabus
[B][U]Designation [/U][/B]: Junior Scientific Officer

[B][U]Home Page [/U][/B]: [URL]https://mpsc.mizoram.gov.in/[/URL]
[B][U]Download Syllabus Here [/U][/B]: [url]http://www.indianjobtalks.com/uploads/76197-Junior-scientific.pdf[/url]

[B][U]Unit –II  [/U][/B]:  Chemical Science ( 60 Marks) (All unit carry 15 marks each)  
[B](i) Atomic Structure, Periodic Properties and Chemical Bonding [/B]: 
DE-Broglie’s concept of dual character of matter; Heisenberg’s Uncertainty Principle; Schrodinger equation; quantum numbers; shapes of s, p and d-orbitals; Aufbau principle; Pauli’s exclusion principle; Hund’s maximum multiplicity rule; Effective nuclear charge. The general features of long form of periodic table;

Detailed discussions (definition, factors affecting it and periodic trends) of the following properties of the elements, with reference to s and p- block: 
(a) Atomic radii  and Ionic radii; 
(b) Ionization Energy, Successive ionization energies, 
(c) Electron Affinity, 
(d) Electronegativity.

Covalent character in ionic compounds, Fajan’s rules and consequences of polarization; Ionic character in covalent compounds, Percentage ionic character from dipole moment and electronegativity difference; Concept of hybridization; valence shell electron pair repulsion theory (VSEPR),  valence bond theory and molecular orbital theory. Hydrogen bonding and its effect on melting point and boiling point.

[B](ii) Organic functional groups & basic concept of reaction mechanism [/B]: 
General preparation, properties and inter-conversions of the following functional groups: alkyl halides, alcohols, aldehydes, ketones, amines, nitriles, carboxylic acids & its derivatives; Inductive-effect, Electromeric-effect, Mesomeric-effect or Resonance, hyperconjugation, homolytic and heterolytic bond-breaking; Reaction intermediates (formation & stability); electrophiles, nucleophiles. Energy considerations; Aromaticity- Huckel rule & its application; SN1, SN2, E1 & E2 mechainsms.

[B](iii) Colloids, Surface Chemistry and Electrochemistry [/B]: 
Classification of colloids; preparation of colloids - peptisation, Bredig’s method and condensation methods; purification of colloids; properties of colloids - Tyndall effect, Brownian movement, electrophoresis and electro-osmosis; protective colloids and gold number.

Sols (reversible and irreversible), emulsions and emulsifiers, association colloids (micelles), gels. Applications of colloids. Physisorption; chemisorption; molar enthalpy of adsorption. Langmuir and Freundlich adsorption isotherm. Specific Surface area determination (BET method). Electrical conductance; specific, equivalent and molar conductivity; variation of conductance with dilution for weak and strong electrolytes; Kohlrausch’s law of independent migration of ions.

Arrhenius theory of electrolytic dissociation; Ostwald’s dilution law, ionic strength, Debye–Huckel– Onsager equation for strong electrolytes (derivation not required), asymmetry effect; electrophoretic effect; Debye-Falkenhagen effect and Wien effect (qualitative treatment only).

[B]  (iv) Experimental Analysis [/B]: 
Significant figures; rounding off of numerical expressions; types of errors: minimizing of errors, the normal distribution of indeterminate errors, propagation of determinate errors; accuracy and precision, methods of their expression, difference between accuracy and precision; reporting of analytical data, rejection of data, confidence limits and intervals, test of significance (the F-test and t-test).

Volumetric titrimetry; primary and secondary standard; expressing concentrations of solutions; theory of acid-base and redox indicators; application of solubility product and common ion effect in analytical chemistry; Concept of group separation in qualitative analysis.

Theories of distillation, fractional distillation, steam distillation, sublimation and zone refining.  Solvent extraction:  Principle and efficiency of the technique; Chromatography: Classification, principles and efficiency of different techniques.[/QUOTE]

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