Dravidian Open University – B.Sc 3rd Semester Syllabus 2024 Subjects

The article gives the information of Dravidian Open University – B.Sc 3rd Semester Syllabus. Students in the B.Sc third semester wanted to know the updated syllabus. In this article, we provide the New applicable B.Sc III Semester syllabus 2024 (द्रविड़ियन ओपन यूनिवर्सिटी) with all the list of subjects in the semester are mentioned here. The B.Sc 3rd-semester syllabus 2024 is in pdf format. So, candidates can download the revised syllabus on this page or on the official website.

About Dravidian Open University

The Dravidian University, Kuppam, Chittoor district, Andhra Pradesh, India was established by the Government of Andhra Pradesh with the initial support of the governments of Tamil Nadu, Karnataka, and Kerala for integrated development of Dravidian languages and culture. At present, it has 20 academic departments and 6 research centers. The Dravidian family of languages, which includes more than 27 tongues, the most ancient, living language family of the world. The University’s official website is www.dravidianuniversity.ac.in 

Dravidian University B.Sc Course Structure

B.Sc Course structure at Dravidian University
B.Sc is 3 years under graduation course1st yearSemester 14 months Duration
Semester 24 months
2nd yearSemester 34 months
Semester 44 months
3rd yearSemester 54 months
Semester 64 months

B.Sc Courses

Most universities offering some of the courses in Bachelor of Science that is given below.

  • Biology
  • Biochemistry
  • Botany
  • Chemistry
  • Computer Science
  • Electronics
  • Environmental Science
  • Mathematics
  • Physics
  • Zoology

Subjects in B.Sc III Semester – Dravidian University

The following are the Dravidian University B.Sc second year – first semester subjects

  • Mathematics
  • Physics
  • Zoology
  • Chemistry
  • Botany
  • Electronics
  • Computer science/Information Technology

Download Dravidian University B.Sc 3rd Semester syllabus 2020

<< Download B.Sc 3rd Semester Dravidian Open University Syllabus >>

B.Sc 3rd Semester Mathematics syllabus – Download


  • UNIT – 1: GROUPS : –
    Binary Operation – Algebraic structure – semi group-monoid – Group definition and elementary
    properties Finite and Infinite groups – examples – order of a group. Composition tables with examples.
  • UNIT – 2: SUBGROUPS : –
    Complex Definition – Multiplication of two complexes Inverse of a complex-Subgroup definition
    – examples-criterion for a complex to be a subgroups.
    Criterion for the product of two subgroups to be a subgroup-union and Intersection of subgroups.
    Co-sets and Lagrange’s Theorem :-
    Cosets Definition – properties of Cosets–Index of a subgroups of a finite groups–Lagrange’s
    Definition of normal subgroup – proper and improper normal subgroup–Hamilton group –
    criterion for a subgroup to be a normal subgroup – intersection of two normal subgroups – Sub
    group of index 2 is a normal sub group – simple group – quotient group – criteria for the existence
    of a quotient group.
    Definition of homomorphism – Image of homomorphism elementary properties of homomorphism – Isomorphism – automorphism definitions and elementary properties–the kernel of a homomorphism – fundamental theorem on Homomorphism and applications.
    Definition of permutation – permutation multiplication – Inverse of a permutation – cyclic
    permutations – transposition – even and odd permutations – Cayley’s theorem.
    Cyclic Groups:-
    Definition of cyclic group – elementary properties – classification of cyclic groups.

B.Sc 3rd Semester Physics Syllabus – Download

  • UNIT-I 
    1. Aberrations:
    Introduction – monochromatic aberrations, spherical aberration, methods of minimizing
    spherical aberration, coma, astigmatism and curvature of field, distortion. Chromatic
    aberration-the achromatic doublet.Achromatism for two lenses ( i )in contact and (ii)
    separated by a distance.
  • UNIT-II 
    2. Interference
    Principle of superposition – coherence-temporal coherence and spatial coherence-conditions
    for interference of light.Fresnel’s biprism-determination of wavelength of light –change of
    phase on reflection.Oblique incidence of a plane wave on a thin film due to reflected and
    transmitted light (cosine law) –colors of thin filmsInterference
    by a film with two non-parallel reflecting surfaces (Wedge shaped film).
    Determination of diameter of wire, Newton’s rings in reflected light. Michelson
    interferometer, Determination of wavelength of monochromatic light using Newton’s rings
    and Michelson Interferometer.
  • UNIT-III (14hrs )
    3. Diffraction
    Introduction,distinction between Fresnel and Fraunhoffer diffraction, Fraunhoffer diffraction
    –Diffraction due to single slit-Fraunhoffer diffraction due to double slit-Fraunhoffer
    diffraction pattern with N slits (diffraction grating).Resolving power of grating, Determination of wavelength of light in normal incidence and minimum deviation methods
    using diffraction grating, Fresnel’s half period zones-area of the half period zones-zone plate-comparison of zone plate with convex lens-difference between interference and diffraction.
    Polarized light: methods of polarization by reflection, refraction, double refraction, scattering of light-Brewster’s law-Mauls law-Nicol prism polarizer and analyzer Quarter wave plate, Half wave plate-optical activity, determination of specific rotation by Laurent’s half shade polarimeter-Babinet’s compensator – idea of elliptical and circular polarization
  • UNIT-V 
    5. Lasers and Holography
    Lasers: introduction,spontaneous emission, stimulated emission. Population Inversion, Laser principle-Einstein coefficients-Types of lasers-He-Ne laser, Ruby laser- Applications of lasers. Holography: Basic principle of holography-Gabor hologram and its limitations, Applications of holography.
    6. Fiber Optics
    Introduction- different types of fibers, rays and modes in an optical fiber, fiber material, principles of fiber communication (qualitative treatment only), advantages of fiber optic communication.

B.Sc 3rd Semester Chemistry Syllabus – Download



1. Chemistry of d-block elements:

Characteristics of d-block elements with special reference to electronic configuration, variable valence, magnetic properties, catalytic properties and ability to form complexes. Stability of various oxidation states

2. Theories of bonding in metals:

Metallic properties and its limitations, Valence bond theory, Free electron theory, Explanation of thermal and electrical conductivity of metals, limitations, Band theory, formation of bands, explanation of conductors, semiconductors and insulators.

3.Metal carbonyls:
EAN rule, classification of metal carbonyls, structures and shapes of metal carbonyls of V, Cr, Mn, Fe, Co and Ni.
4. Chemistry of f-block elements:
Chemistry of lanthanides – electronic structure, oxidation states, lanthanide contraction, consequences of lanthanide contraction, magnetic properties. Chemistry of actinides – electronic configuration, oxidation states, actinide contraction, comparison of lanthanides and actinides.

1. Halogen compounds
Nomenclature and classification of alkyl (into primary, secondary, tertiary), aryl, aryl alkyl, allyl, vinyl, benzyl halides. Nucleophilic aliphatic substitution reaction- classification into SN1 and SN2 – reaction mechanism with examples – Ethyl chloride, t-butyl chloride and optically active alkyl halide 2-bromobutane.
2. Hydroxy compounds Hydroxy compounds
Nomenclature and classification of hydroxy compounds.
Alcohols: Preparation with hydroboration reaction, Grignard synthesis of alcohols.
Phenols: Preparation i) from diazonium salt, ii) from aryl sulphonates, iii) from cumene.
Physical properties- Hydrogen bonding (intermolecular and intramolecular). Effect of
hydrogen bonding on boiling point and solubility in water.
Identification of alcohols by oxidation with KMnO4, Ceric ammonium nitrate, Luca’s reagent and phenols by reaction with FeCl3.
Chemical properties:
a) Dehydration of alcohols.
b) Oxidation of alcohols by CrO3, KMnO4.
c) Special reaction of phenols: Bromination, Kolbe-Schmidt reaction, Riemer-Tiemann
reaction, Fries rearrangement, azocoupling, Pinacol-Pinacolone rearrangement.

Carbonyl compounds
Nomenclature of aliphatic and aromatic carbonyl compounds, structure of the carbonyl
group. Synthesis of aldehydes from acid chlorides, synthesis of aldehydes and ketones
using 1,3-dithianes, synthesis of ketones from nitriles and from carboxylic acids.
Physical properties: Reactivity of carbonyl group in aldehydes and ketones. Nucleophilic addition reaction with a) NaHSO3, b) HCN, c) RMgX, d) NH2OH, e)PhNHNH2, f) 2,4 DNPH, g) Alcohols-formation of hemiacetal and acetal. Base catalysed reactions: a) Aldol, b) Cannizzaro’s reaction, c) Perkin reaction, d) Benzoin condensation, e) Haloform reaction, f) Knoevenagel reaction. Oxidation of aldehydesBaeyer-Villiger oxidation of ketones.Reduction: Clemmensen reduction, Wolf-Kishner reduction, MPV reduction, reduction with LiAlH4 and NaBH4. Analysis of aldehydes and ketones with a) 2,4-DNPH test, b) Tollen’s test, c) Fehling test, d) Schiff’s test
e) Haloform test (with equation)

1. Carboxylic acids and derivatives
Nomenclature, classification and structure of carboxylic acids. Methods of preparation by a) Hydrolysis of nitriles, amides b) Hydrolysis of esters by acids and bases with mechanism c) Carbonation of Grignard reagents. Special methods of preparation of aromatic acids by a) Oxidation of side chain. b) Hydrolysis by benzotrichlorides. c) Kolbe reaction. Physical properties: Hydrogen bonding, dimeric association, aciditystrength of acids with examples of trimethyl acetic acid and trichloroacetic acid. Relative differences in the acidities of aromatic and aliphatic acids. Chemical properties: Reactions involving H, OH and COOH groups- salt formation, anhydride formation, acid chloride formation, amide formation and esterification (mechanism). Degradation of carboxylic acids by Huns-Diecker reaction, decarboxylation by Schimdt reaction, ArndtEistert
synthesis, halogenation by Hell- Volhard- Zelinsky reaction.
2. Active methylene compounds
Acetoacetic ester: keto-enol tautomerism, preparation by Claisen condensation, Acid
hydrolysis and ketonic hydrolysis. Preparation of a) monocarboxylic acids.
b) Dicarboxylic acids. c) Reaction with urea Malonic ester: preparation from acetic acid. Synthetic applications: Preparation of a) monocarboxylic acids (propionic acid and n-butyric acid). b) Dicarboxylic acids (succinic acid and adipic acid) c) α,β-unsaturated carboxylic acids (crotonic acid). d) Reaction with urea.

B.Sc 3rd Semester Computer science/Information Technology Syllabus – Download

  • UNIT-1
    FUNDAMENTALS OF OBJECT-ORIENTED PROGRAMMING: Introduction, Object-Oriented paradigm, Basic Concepts of OOP, Benefits of OOP, Applications of OOP, Java features: OVERVIEW OF JAVA LANGUAGE: Introduction, Simple Java program structure, Java tokens, Java Statements, Implementing a Java Program, Java Virtual Machine, Command line arguments. CONSTANTS, VARIABLES & DATA TYPES: Introduction, Constants, Variables, Data Types, Declaration of Variables, Giving Value to Variables, Scope of variables, Symbolic Constants, Typecasting, Getting Value of Variables, Standard Default values; OPERATORS & EXPRESSIONS.
    DECISION MAKING & BRANCHING: Introduction, Decision making with if statement,
    Simple if statement, if. Else statement, Nesting of if. else statements, the else if ladder, the
    switch statement, the conditional operator. LOOPING: Introduction, The While statement,
    the do-while statement, the for statement, Jumps in loops.  Structure of Computer Science/Information Technology (IT) Syllabus CLASSES, OBJECTS & METHODS: Introduction, Defining a class, Adding variables, Adding methods, Creating objects, Accessing class members, Constructors, Method overloading, Static members, Nesting of methods;
    INHERITANCE: Extending a class, Overloading methods, Final variables and methods,
    Final classes, Abstract methods and classes; ARRAYS, STRINGS AND VECTORS: Arrays, One-dimensional arrays, Creating an array, Two – dimensional arrays, Strings, Vectors, Wrapper classes; INTERFACES: MULTIPLE INHERITANCE: Introduction, Defining interfaces, Extending
    interfaces, Implementing interfaces, Assessing interface variables;
    MULTITHREADED PROGRAMMING: Introduction, Creating Threads, Extending the Threads, Stopping and Blocking a Thread, Lifecycle of a Thread, Using Thread Methods, Thread Exceptions, Thread Priority, Synchronization, Implementing the ‘Runnable’ Interface.
    MANAGING ERRORS AND EXCEPTIONS: Types of errors: Compile-time errors, Runtime
    errors, Exceptions, Exception handling, Multiple Catch Statements, Using finally a statement,
  • UNIT-V
    APPLET PROGRAMMING: local and remote applets, Applets and Applications, Building Applet code, Applet Life cycle: Initialization state, Running state, Idle or stopped state, Dead state, Display state.
    PACKAGES: Introduction, Java API Packages, Using System Packages, Naming conventions, Creating Packages, Accessing a Package, using a Package.
    MANAGING INPUT/OUTPUT FILES IN JAVA: Introduction, Concept of Streams, Stream classes, Byte Stream Classes, Input Stream Classes, Output Stream Classes, Character Stream classes: Reader stream classes, Writer Stream classes, Using Streams, Reading and writing files.

B.Sc 3rd Semester Botany Syllabus – Download

Plant Taxonomy and Embryology

    1.Fundamental components of taxonomy (identification, nomenclature, classification)
    2. Taxonomic resources: Herbarium- functions& important herbaria, Botanical gardens, Flora, Keys- single access and multi-access.
    3. Botanical Nomenclature- Principles and rules of ICBN (ranks and names; principle of priority, binomial system; type method, author citation, valid-publication).
    1. Types of classification- Artificial, Natural and Phylogenetic.
    2. Bentham & Hooker’s system of classification- merits and demerits.
    3. Engler & Prantle’s system of classification- merits and demerits
    4. Phylogeny – origin and evolution of Angiosperms
    1. Systematic study and economic importance of the following families:
    Annonaceae, Brassicaceae, Rutaceae, Curcurbitaceae, and Apiaceae.
    1. Systematic study and economic importance of plants belonging to the following
    families: Asteraceae, Asclepiadaceae, Lamiaceae, Ephorbiaceae, Arecaceae, and Poaceae.
  • 1.Anther structure, microsporogenesis and development of male gametophyte.
    2. Ovule structure and types; Megasporogenesis, development of Monosporic, Bisporic and
    Tetrasporic types (Peperomia ,Drusa, Adoxa) of embryo sacs.
    3. Pollination and Fertilization (out lines) Endosperm development and types.
    4. Development of Dicot and Monocot embryos, Polyembryony.

B.Sc 3rd Semester Electronics Syllabus – Download

Digital Electronics

  • Unit – I 
    NUMBER SYSTEM AND CODES: Decimal, Binary, Hexadecimal, Octal, BCD, Conversions, Complements (1’s, 2’s,9’s and 10’s), Addition, Subtraction, Gray, Excess-3 Code conversion from one to another.
  • Unit- II 
    BOOLEAN ALGEBRA AND THEOREMS: Boolean Theorems, De-Morgan’s laws. Digital logic gates, Multi level NAND & NOR gates. Standard representation of logic functions (SOP and POS), Minimization Techniques (Karnaugh Map Method: 4,5 variables),don’t care condition.
  • Unit-III 
    Adders-Half & full adder, Subtractor-Half and full subtractors, Parallel binary adder, Magnitude Comparator, Multiplexers (2:1,4:1)) and Demultiplexers (1:2,4:1), Encoder (8-line-to-3-line) and Decoder (3-line-to-8-line). IC-LOGIC FAMILIES: TTL logic, DTL logic, RTL Logic, CMOS Logic families (NAND&NOR Gates),Bi-CMOS inverter
  • UNIT-IV 
    Flip Flops: S-R FF , J-K FF, T and D type FFs, Master-Slave FFs, Excitation tables,
    Registers:-shift left register, shift right register, Counters – Asynchronous-Mod16,Mod10,Mod-8,Down counter,Synchronous-4-bit &Ring counter.
  • UNIT-V 
    General Memory Operations, ROM, RAM (Static and Dynamic), PROM, EPROM, EEPROM, EAROM, PLA(Programmable Logic Array), PAL(Programmable Array Logic)

B.Sc 3rd Semester Zoology Syllabus – Download


  • Unit – I
    1. Cytology – I
    1.1 Definition, history, prokaryotic and eukaryotic cells, virus, viroids, mycoplasma
    1.2 Electron microscopic structure of eukaryotic cell.
    1.3 Plasma membrane –Different models of plasma membrane.
  • Unit – II
    2. Cell organelles
    2.1 Structure and functions of Endoplasmic Reticulum
    2.2 Structure and functions of Golgi apparatus
    2.3 Structure and functions of Lysosomes
    2.4 Structure and functions of Ribosomes
    2.5 Structure and functions of Mitochondria
    2.6 Nucleus
    2.7. Chromatin – Structure and significance, Chromosomes – Structure, types, functions
  • Unit – III
    3.1 Genetics – I
    3.1.1 Mendel’s work on the transmission on traits
    3.1.2 Principles of inheritance
    3.1.3 Incomplete dominance and codominance
    3.1.4 Lethal alleles, Epistasis, Pleiotropy
  • Unit – IV
    4.1 Genetics – II
    4.1.1 Sex determination
    4.1.2 Sex linked inheritance
    4.1.3 Linkage and crossing over
    4.1.4 Extra chromosomal inheritance
    4.1.5 Human karyotyping
  • Unit – V
    5.1 Evolution
    5.1.1 Origin of life
    5.1.2 Lamarckism, Darwinism, Neo – Darwinism, Hardy-Weinberg Equilibrium.
    5.1.3 Variations, isolating mechanisms, natural selection
    5.1.4 Types of natural selection (directional, stabilizing, disruptive)
    5.1.5 Artificial selection and forces of evolution
    5.1.6 Speciation (Allopatric and Sympatric)
    5.1.7 Macro evolutionary principles (Example: Darwin’s finches)

We mentioned the overall syllabus of the (Bachelor of Science) B.Sc 3rd Sem Dravidian Open University Syllabus. Want more information or details visit the official website. And, the candidates want the previous year’s syllabus. The previous year’s download links were also mentioned below.

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FAQS About the Dravidian Open University – B.Sc 3rd Semester Syllabus 2024 Subjects

What is Dravidian Open University?

The Dravidian Open University is a distance learning institution that offers various undergraduate and postgraduate programs in different fields.

What is B.Sc.?

B.Sc. stands for Bachelor of Science, which is an undergraduate degree program that typically focuses on science-related subjects such as mathematics, physics, chemistry, biology, etc.

What are the subjects in B.Sc. 3rd Semester?

The specific subjects in B.Sc. 3rd Semester may vary depending on the university and program, but typically, the subjects may include advanced topics in the major subject as well as some complementary courses.

How can I access the Dravidian Open University B.Sc. 3rd Semester syllabus?

You can visit the official website of Dravidian Open University or contact the university administration to get the detailed syllabus and subject information for B.Sc. 3rd Semester.

What are the career prospects after completing B.Sc.?

Graduates with a B.Sc. degree can pursue various career options in fields such as research, education, healthcare, technology, engineering, and more.

Can you provide the syllabus for B.Sc. 3rd semester at the Dravidian Open University?

I apologize, but I don’t have access to the latest syllabus and subjects for B.Sc. 3rd semester at the Dravidian Open University. It would be best to contact the university directly or check their website for more information.

How can I apply for B.Sc. at the Dravidian Open University?

To apply for B.Sc. at the Dravidian Open University, you can visit their official website and fill out the application form. You may also need to submit relevant documents and pay the application fee. It’s important to check the eligibility criteria and admission requirements before applying.

Here in this article, Dravidian Open University – B.Sc 3rd Semester Syllabus 2024 is clearly given. Follow this article to know the complete syllabus for B.Sc third Semester. In this page, you may also download Syllabus of Dravidian University B.Sc 3rd Semester in pdf format. For any queries or doubts regarding Dravidian Open University – B.Sc 3rd Semester Syllabus, you may comment on the below comment box. We will answer them as soon as possible.

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