UPSC CGS Syllabus

Geology: Paper-IUPSC CGS Syllabus 2021: Union Public Service Commission has released the UPSC CGS 2021 Syllabus. Candidates who are preparing for the Combined Geo-Scientist Exam can check the complete CGS 2021 Syllabus here. We collected the CGS Syllabus & Exam Pattern and posted it here for easy reference of aspirants. So candidates can refer our page to download the latest UPSC Syllabus.

UPSC CGS Syllabus & Exam Pattern 2021:

Aspirants should be aware of the updated exam pattern before starting their preparation. So candidates are advised to refer the exam pattern before viewing the syllabus. We have also listed the selection process of UPSC CGS 2021 Exam.

Selection Procedure:

UPSC CGS Exam selection involves 3 steps as follows

  1. Preliminary Examination
  2. Mains Examination
  3. Personality Test

UPSC CGS 2021 Notification – Click Here

UPSC CGS Prelims Exam Pattern:

Geologist & Scientist B (Hydrogeology)

Paper NoName of the TestMarksDuration
Paper-IGeneral Studies1002 hours
Paper-IIGeology / Hydrogeology3002 hours

Geophysicist and Scientist ‘B’(Geophysics)

Paper NoName of the TestMarksDuration
Paper-IGeneral Studies1002 hours
Paper-IIGeophysics3002 hours

Chemist and Scientist ‘B’(Chemical)

Paper NoName of the TestMarksDuration
Paper-IGeneral Studies1002 hours
Paper-IIChemistry3002 hours
  • The question paper will be of the objective type (multiple choice questions).
  • The question papers will be set in English only.
  • There will be (Negative Marking) for wrong answers.
  • If a question is left blank there will be no penalty for that question.

UPSC CGS Prelims Syllabus:

PAPER-I: General Studies

  • Current events of national and international importance.
  • History of India and Indian National Movement.
  • Indian and World Geography – Physical, Social, Economic Geography of India and the World.
  • Indian Polity and Governance – Constitution, Political System, Panchayati Raj, Public Policy, Rights Issues, etc.
  • Economic and Social Development – Sustainable Development, Poverty, Inclusion, Demographics, Social Sector initiatives, etc.
  • General issues on Environmental Ecology, Bio-diversity and Climate Change – that do not require subject specialisation.
  • General Science

PAPER-II: Geology/Hydrogeology

Geology/HydrogeologyPhysical Geology
Structural Geology
Igneous Petrology
Metamorphic Petrology
Economic Geology

Paper-II: Geophysics

GeophysicsSolid Earth Geophysics
Mathematical Methods in Geophysics
Geophysical Prospecting
Remote Sensing and Thermodynamics
Nuclear Physics and Radiometry

Paper-II: Chemistry

  • Chemical periodicity
  • Chemical bonding and structure
    1. Ionic bonding
    2. Covalent bonding
    3. Coordinate bonding
  • Acids and bases
  • Theoretical basis of quantitative inorganic analysis
  • Kinetic theory and the gaseous state
  • Chemical thermodynamics and chemical equilibrium
  • Solutions of non-electrolytes
  • Electrochemistry
  • Basic organic chemistry
  • Stereochemistry
  • Types of organic reactions
    1. Aliphatic substitution reactions
    2. Elimination reactions
    3. Addition reactions
    4. Electrophilic and nucleophilic aromatic substitution
  • Molecular Rearrangements

UPSC CGS Mains Exam Pattern:


Paper NoName of the TestMarksDuration
Paper-IGeology2003 hours
Paper-IIGeology2003 hours
Paper-IIIGeology2003 hours

Geophysicist and Scientist ‘B’ (Geophysics):

Paper NoName of the TestMarksDuration
Paper-IGeophysics2003 hours
Paper-IIGeophysics2003 hours
Paper-IIIGeophysics2003 hours

Chemist & Scientist ‘B’ (Chemical):

Paper NoName of the TestMarksDuration
Paper-IChemistry2003 hours
Paper-IIChemistry2003 hours
Paper-IIIChemistry2003 hours

Scientist ‘B’ (Hydrogeology)

Paper NoName of the TestMarksDuration
Paper-IGeology2003 hours
Paper-IIGeology2003 hours
Paper-IIIHydrogeology2003 hours
  • Mains Exam will be of conventional type papers must be answered in English.

UPSC CGS Mains Exam Syllabus:

Geology: Paper-I

  • Section A. Physical geology and remote sensing
  • Section B. Structural geology
  • Section C. Sedimentology
  • Section D. Paleontology
  • Section E. Stratigraphy

Geology Paper-II:

  • Section A. Mineralogy
  • Section B. Geochemistry and isotope geology
  • Igneous petrology
  • Section D. Metamorphic petrology
  • Section E. Geodynamics

Geology Paper-III:

  • Section A. Economic geology
  • Section B. Indian mineral deposits and mineral economics
  • Section D. Fuel geology and Engineering geology
  • Section E. Environmental geology and Natural hazards


  • Section A. Occurrence and distribution of groundwater
  • Section B. Groundwater movement and well hydraulics
  • Section C. Water wells and groundwater levels
  • Section D. Groundwater exploration
  • Section E. Groundwater quality and management

Geophysics Paper-I: (Part A)

Geophysics: Paper-I

  • Solid Earth Geophysics
  • Earthquake Seismology
  • Mathematical methods in Geophysics
  • Geophysical Inversion

Geophysics Paper-I: (Part B)

  • Mathematical Methods of Physics
  • Electrodynamics
  • Electromagnetic Theory
  • Introductory Atmospheric and Space Physics

Geophysics Paper-II: (Part A)

  • Potential Field (Gravity and Magnetic) Methods
  • Electrical and Electromagnetic methods
  • Seismic Prospecting
  • Borehole Geophysics

Geophysics Paper-II: (Part B)

  • Classical Mechanics
  • Thermodynamics and Statistical Physics
  • Atomic and Molecular Physics and Characterization of materials
  • Nuclear and Particle Physics

Geophysics: Paper-III (Part A)

  • Radiometric and Airborne Geophysics
  • Marine Geophysics
  • Geophysical Signal Processing
  • Remote Sensing and Geohydrology

Geophysics: Paper-III (Part B)

  • Solid State Physics and Basic Electronics
  • Laser systems
  • Digital electronics, Radar systems, Satellite communications
  • Quantum Mechanics

Chemistry: Paper-I (Inorganic Chemistry)

  • Inorganic solids
  • Chemistry of coordination compounds
  • Structure and bonding
  • Acid base titrations
  • Gravimetric Analysis
  • Redox Titrations
  • Complexometric titrations
  • Organometallic compounds
  • Nuclear chemistry
  • Chemistry of d- and f-block elements

Chemistry: Paper-II (Physical Chemistry):

  • Kinetic theory and the gaseous state
  • Solids
  • Chemical thermodynamics and chemical equilibrium
  • Chemical kinetics and catalysis
  • Electrochemistry
  • Quantum chemistry
  • Basic principles and applications of spectroscopy
  • Photochemistry

Chemistry: Paper-III (Analytical and Organic)

PART-A (Analytical Chemistry)

  • Errors in quantitative analysis
  • Separation Methods
  • Solvent extraction
  • Spectroscopic methods of analysis
  • Thermal methods of analysis
  • X-ray methods of Analysis
  • Inductively coupled plasma spectroscopy
  • Analysis of geological materials

PART B (Organic chemistry)

  • Unstable, uncharged intermediates
  • Addition reactions
  • Reactions at the carbonyl group
  • Oxidation and Reduction
  • Electrocyclic Reactions
  • Spectroscopic methods of analysis

Personality Test (Stage‐III):

Candidates who qualified in the Mains Exam are permitted for the Personality Test. So candidates can go through the Test pattern and prepare accordingly.

  • The Personality Test will carry 200 Marks.

UPSC CGS Syllabus PDF 2021 – Click here

Important Links for UPSC 2021 Exam:

UPSC Notifications 2021Click here
For Official WebsiteClick here

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