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OPSC Assistant Chemist Syllabus and Exam Pattern 2023: Marking Scheme, PDF

Last Updated on Apr 09, 2025

Download OPSC Assistant Chemist Recruitment complete information as PDF
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The OPSC Assistant Chemist Syllabus and Exam Pattern has been released by the Odisha Public Service Commission as a part of the official notification. Candidates can check the following article to get all the details regarding the officially released syllabus and exam pattern. The OPSC Assistant Chemist Syllabus and Exam pattern guide the candidates to optimise their preparation for the best result. Some important information relating to the syllabus for the OPSC Assistant Chemist Exam that candidates must make note of is as follows: 

  • The selection process for Assistant Chemist involves a Written Examination & Viva Voce Test.
  • The written examination includes two papers: Paper I (Organic & Analytical Chemistry) and Paper II (Physical & Inorganic Chemistry), each worth 100 marks.
  • Each paper consists of 100 Multiple-Choice Questions (MCQs), with each question carrying one mark.
  • The duration of the examination is One and a half (1 1⁄2) Hours for each paper.
  • Negative marking applies, with a deduction of 25% (one-fourth) of marks for each incorrect answer in both papers.
  • The Viva Voce test carries a total of 25 marks.

Candidates must ensure that they go through and understand all the information for the upcoming OPSC Assistant Chemist recruitment exam. In case of any queries or to know the detailed OPSC Assistant Chemist Syllabus and Exam pattern candidates must refer only to the official OPSC website.

Download OPSC Assistant Chemist Syllabus PDF 

OPSC Assistant Chemist Syllabus 2023

The Odisha Public Service Commission has released all the details of the OPSC Assistant Chemist Syllabus through the official notification on their official website. Candidates must thoroughly go through all the details on the syllabus in order to develop a good preparation strategy that covers all the bases.

OPSC Assistant Chemist Syllabus for Written Examination

The detailed OPSC Assistant Chemist Syllabus fro the written examination is as follows:

Unit

Topics

Paper 1 (Organic and Analytical Chemistry)

Unit -I: Basic Concepts of organic chemistry & Stereochemistry


 

a) Electronic Displacements: Inductive, electrometric, resonance and mesomeric effects, hyperconjugation and their applications; Dipole moment; Organic acids and bases; their relative strength. Electrophiles and Nucleophiles; Nucleophilicity and basicity, Types, shape, and relative stability of carbocations, carbanions, free radicals and carbenes. Aromaticity: Hückel's rule, aromatic character of arenes, cyclic carbocations/carbanions and heterocyclic compounds with suitable examples. Different types of substitutions (SN", SN2, SN, SN'CB), Elimination and free radical reaction. Name reactions (Aldol and Benzoin condensation, Knoevenagel condensation, Perkin, Cannizzaro and Wittig reaction, Claisen condensation, Dieckmann and Reformatsky reactions)

b) Stereochemistry

Fischer Projection, Newmann and Sawhorse Projection formulae; Geometrical isomerism: cis-trans and syn-anti isomerism E/Z notations with C.I.P rules.

Optical Isomerism: Optical Activity, Specific Rotation, Chirality/Asymmetry, Enantiomers, Molecules with one and two chiral-centres, Distereoisomers, meso-structures, Racemic mixture and resolution, inversion. Relative and absolute configuration: D/L and R/S designations.

Types of cycloalkanes and their relative stability, Baeyer strain theory. Conformational analysis of alkanes (ethane and n-butane): Relative stability with energy diagrams. Energy diagrams of cyclohexane: Chair, Boat, and Twist boat forms.

Unit-II: Introduction to analytical chemistry and data processing 

Role of analytical chemistry, classification of analytical methods, types of instrumental analysis Errors of analysis, classification, source and minimization of errors, absolute and relative errors, accuracy and precision, significant figures, mean value and deviation, average and standard deviation, median value, range, confidence intervals. Sampling in analysis. Definition, theory of sampling, technique of sampling, statistical criteria of good sampling. stratified sampling, transmission, and storage of samples.


 

Unit-III: Analysis of Soil and Water

Analysis of Soil: Sampling, Carbonate, Organic carbon, and organic matter, Total nitrogen, ammonia and nitrates, Total determination of major soil constituents by fusion analysis, silica and total combined oxides of iron, aluminium, and titanium, Determination Ca, Mg, Na, K, phosphate, boron, Co, Cu, Zn, Exchangeable cations, Cation exchange capacity, chemical analysis as a measure of soil fertility.

Analysis of Water: Sources of water, classification of water for different uses, types of water pollutants and their effects, Analytical methods for the determination of ions in water: CO,, HCO, FC, SO, PO, NO. Analytical methods for the determination of cations in water: Fe, Fe, Ca, Mg2, Cr, As, Pb, Hg, Cu, Zn, Cd, Co. Determination of Dissolved oxygen (D.O), Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD), standards for drinking water.

Unit IV: Analytical Methods

a) Solvent Extraction and lon exchange: Principles, classification of extraction, mechanism of extraction, extraction equilibria, techniques of extraction, application in analytical chemistry. Ion exchange: Type of ion exchange resins, synthesis and characteristics of ion exchange resins, action of ion exchange resins, ion exchange equilibria, technique of ion exchange, application of ion exchange in analytical chemistry.

Fundamentals of Spectroscopy: Instrumentation, Theory and Applications of IR, NMR (Proton & Carbon 13), Mass & Raman Spectroscopy.

Chromatographic methods: Basic principles and applications of chromatographic techniques (Paper, TLC, lon exchange, HPLC, GLC).

Spectroscopic methods: atomic adsorption Spectroscopy- Principles and applications of AAS in chemical analysis. Flame photometric methods - Principles, interface in flame photometry, application in quantitative analysis. Nephelometric method- Principle and applications in analysis.

b) X-ray diffraction method: Weiss indices, Miller indices, Laue method, Bragg's law, and applications in determination of crystal structure.

Electron spin resonance: Principles, zero field splitting and Kramer's degeneracy. factors affecting the g value, hyperfine splitting, and applications to sample radicals. Thermal analytical methods: Thermogravimetric analysis (TGA). Derivative Thermogravimetric analysis (DTG). Applications of thermogravimetry. Differential Thermal Analysis (DTA)- Applications of differential thermal analysis in simultaneous TG-DTA curves, CD, CV, Polarography.

Unit-V: Analysis of Ore

General techniques of analysis applied to complex materials- Scope of metallurgical analysis - General methods of dissolution of complex materials -Various chemical methods for the effective separation of the constituents in the complex materials. Analysis of ores: Iron ore- Analysis of the Constituents - Moisture, loss of ignition, Total Iron, ferrous Iron, Ferric Iron, alumina, silica, Titania, Lime, Magnesia, Sulphur, phosphorus, manganese, alkalis, combined water, Carbon in blast furnace, flue dust and sinter. Manganese Ore Analysis of the Constituents-Total Manganese, MnO2, SiO2, BaO. FezOs.AlaOs, CaO, P and S Chromite Ore -Analysis of the Constituents - Chromium, SiO2, FeO, AOs CaO,& MgO. Aluminium Ore (Bauxite) Analysis of the Constituents Silica, Alumina, Fe:Os, Titania, MnO, P:Os, CaO, MgO, vanadium, zirconium, and alkalis.

Paper 2 (Physical and Inorganic Chemistry)

Unit-I (Energetics) 

a) Thermodynamics: Laws of thermodynamics, thermodynamic functions, standard states for gases, liquids and solids, internal energy, enthalpy, entropy and free energy and calculations between them. Activity, fugacity and mean activity coefficients, Debye-Huckel Limiting Law, thermodynamics of Mixing and Mixtures of Volatile Liquids-ideal and Real Solutions and Activity-Excess Functions for non-ideal solutions. Non-equilibrium thermodynamics.

b) Photochemistry & Chemical Dynamics:

Characteristics of electromagnetic radiation, Lambert-Beer's law and its limitations, physical significance of absorption coefficients. Laws, of photochemistry, quantum yield, actinometry, examples of low and high quantum yields, photochemical equilibrium and the differential rate of photochemical reactions, photosensitised reactions, quenching. Role of photochemical reactions in biochemical processes, photostationary states, chemiluminescence.

Empirical rate laws, Theories of reaction rate, Determination of reaction mechanism, Reaction in solutions, catalytic reaction kinetics, Techniques for fast kinetics viz, flow method, relaxation method, flash photolysis, NMR method.

Unit-II: Electrochemistry & Solid state Chemistry

a) Electromotive force of a cell and its measurement, Nernst equation; Standard electrode (reduction) potential and its application to different kinds of half-cells. Application of EMF, determination of activity coefficients and transference numbers. Debye-Huckel-Onsager treatment and its extension, ion solvent interactions. Deby- Huckel-Bjerrum model. Solution of Strong electrolytes. Debye-Huckel theory for activity coefficient of electrolytic solutions; determination of activity and activity coefficients; ionic strength.

Thermodynamics of electrified interface equations. Derivation of electro-capillarity, Lippmann equations (surface excess), methods of determination. Structure of electrified interfaces, Helmitoz-Perrin, Guoy-Champman, Stern models.

Over potentials, exchange current density, derivation of Butler-Volmer equation, Tafel plot. Introduction to corrosion, homogenous theory, forms of corrosion, corrosion monitoring and prevention methods.

b) Nature of the solid state, law of constancy of interfacial angles, law of rational indices, Miller indices, elementary ideas of symmetry, symmetry elements and symmetry operations, qualitative idea of point and space groups, seven crystal systems and fourteen Bravais lattices; X-ray diffraction, Bragg's law, a simple account of rotating crystal method and powder pattern method. Analysis of powder diffraction patterns of NaCI, CSCI and KCI.. Defects in crystals. Electrical properties, Metals, insulators, semiconductors, super conductors, band theory of solids. Solid state reactions: Classification, brief account of the experimental methods of study of solid state reactions.

Phase Diagram: Phase behaviour of one and two component systems (solid-solid, solid-liquid, solid-vapour, liquid-liquid, liquid-vapour equilibrium).

Ehrenfest classification of phase transitions.

Unit - III

a) Symmetry and Group Theory

Symmetry elements and Symmetry operation, Groups and Subgroups, Symmetry point group. Schonflies symbols, Matrix representations of groups. Character of a representation. The Great Orthogonality theorem (without proof) and its importance. Character tables and their uses. Derivation of character table for Cav, Cav

b) Electronic Spectra of Transition Metal Complexes.

Spectroscopic ground states, Orgel diagrams for d1-d states in O, and Ta symmetry, Tanabe-Sugano diagrams for d2 configuration in O. and Ta symmetry. Calculations of Dq. B and ẞ parameters.

Unit - IV

a) Metal-Ligand Bonding

Crystal-Field Theories:

Limitation of Crystal Field Theory, Molecular orbital theory for Octahedral, Tetrahedral and Square Planar Complexes, a and π bonding in Molecular Orbital Theory. Application of MOT to Correlation diagrams.

b) Chemistry of Transition & Inner Transition Elements

Unit - V

Coordination chemistry of Transition Metal ions, Stabilization of Unusual oxidation states, Stereochemistry of coordination compounds, Splitting of d-orbitals in Low symmetry environment, Jahn-Teller effect, Interpretation of Electronic Spectra including Charge Transfer Spectra, Spectrochemical series, Nephelauxetic series, Fluxional molecules, Iso and Hetero Poly acids. Structures of Mixed Metal Oxides: Spinel & Inverse Spinel, lleminite and Perovskite structure, Coloured Minerals and Gem quality crystals. Chemistry of Lanthanides and Actinides: Oxidation state, Spectral and Magnetic Properties, Stereochemistry, Use of Lanthanide Compounds as Shift reagents, Actinide contraction, Oxidation states, Comparisons between Lanthanides and Actinides

a) Chemistry of Main Group elements A & B

General characteristics, Allotropes, Structure and Reactions of simple and industrially important compounds: Boranes, Carboranes, Silicones, Silicates, Boron nitride, Borazines and Phosphazenes. Hydrides, Oxides and Oxoacids of pnictogens (N, P), chalcogens (S, Se & Te) and halogens, Xenon compounds, Pseudo halogens and Interhalogen compounds

b) Environmental pollution and remedies.

Important aspects and control of Air Pollution and Noise Pollution, Treatment of solid and hazardous waste based on characterization, sanitation methods for protection of community health, Steps for sustainable development of green environment.

OPSC Assistant Chemist Exam Pattern 2023

The OPSC Assistant Chemist Selection Process has two different stages. The first of these stages is the written examination or computer-based test, followed by the skill test. The details of the exam pattern for both these stages are discussed below.

Exam Pattern

Paper I (Organic & Analytical Chemistry)

Paper II (Physical & Inorganic Chemistry)

Total Marks

100

100

Questions

100

100

Marks per Question

1

Duration

1 1⁄2 Hours

Negative Marking

Yes (25% deduction)

Viva Voce

Total Marks: 25

Now that you are well-versed with the OPSC Assistant Chemist Syllabus and Exam Pattern, it is time to start your preparations right away. Download the Testbook App now and access the best online learning resources curated by experts.

Latest OPSC Assistant Chemist Updates

Last updated on Jun 12, 2025

-> The written exam for OPSC Assistant Chemist Recruitment will be held on 5th January 2025.

-> The OPSC Assistant Chemist Admit Card for the same will be released on 30th December 2024.

-> The OPSC Assistant Chemist Notification has been released for a total of 22 vacancies.

-> Candidates applying for this position must hold a 2nd Class Post Graduate Degree in Chemistry or an equivalent qualification from a recognized University or Institution.

-> This recruitment drive falls under Group-B of the Odisha Sub-ordinate Chemical Analysis Services Cadre, administered by the Steel & Mines Department. 

FAQs on OPSC Assistant Chemist Syllabus and Exam Pattern

Paper I is for Organic & Analytical Chemistry and paper II is for Physical & Inorganic Chemistry.

Each paper consists of 100 Multiple-Choice Questions (MCQs).

Yes, there is negative marking with a deduction of 25% (one-fourth) of marks for each incorrect answer in both papers.

The duration of each paper is One and a half (1 1⁄2) Hours.

The Viva Voce test carries a total of 25 marks.

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