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Exam Highlights
  • Exam Name
    UPSC Geo-Scientist
  • Mode of Conduction
  • Exam Duration
    Prelims: 2 hours per paper Mains: 3 hours for each paper
  • Exam Frequency
    Once a year
  • Official Website
  • Total Marks
    Prelims: 400 Mains: 700
Exam Dates
  • Official Notification
    September 22, 2021
  • Start of Registration Process
    September 22, 2021
  • End of Registration Process
    October 12, 2021
  • Admit Card Release Date
    Prelims: February 02, 2022
  • Exam Date
    Prelims: February 20, 2022 Mains: Jun 25, 2022 - Jun 26, 2022
  • Result
    to be notified
Eligibilty Criteria

UPSC GSI Age Limit

The candidate applying for the UPSC Geo-Scientist Combined Exam 2022 must fulfill the age criteria as per the official notification. The age criteria are based on the post provided below:

  • The candidate applying for the Geologist and Geophysicist and Chemist in the ministry of Mines post must have attained the age of 21 to 32 years.
  • The candidate applying for the central ministry of water resources post that is Jr. Hydrogeologist (Scientist B) must have attained the age of 21 to 35 years.
  • candidates belonging to the reserved category, Relaxations in the upper age limit will be provided. Mentioned in the table below:
Category Age Relaxation
SC/ ST 5 years
PWD 10 Years
OBC 3 Years
Defense Service Personnel 5 Years
ECOS/ SSCOs 5 Years
Domicile of Jammu and Kashmir from 1 st January 1980 to 31 st December 1989 5 Years
Govt. servants employed in GSI or Central Ground Water Board 7 Years

Educational Qualifications

Aspirants are required to hold a Master’s Degree or equivalent in the concerned discipline.

Geologist (Group ‘A’, GSI)

  • Geological Science
  • Mineral Exploration
  • Geology
  • Geo- Exploration
  • Applied Geology
  • Engineering Geology
  • Earth Science
  • Petroleum Geosciences
  • Geochemistry
  • Marine Geology
  • Resource Management
  • Oceanography
  • Geophysical Technology
  • Coastal Area Studies
  • Petroleum Exploration

Geophysicist Group ‘A’ in GSI

  • Candidate must have M.Sc. or M. Tech. degree from the below-mentioned subjects.
  • Applied Geophysics
  • Marine Geophysics
  • Physics
  • Applied Geophysics
  • Geophysics
  • Applied Physics
  • Integrated M.Sc. degree in Exploration Geophysics

Chemist Group ‘A’ in GSI

  • Aspirants must have an M.Sc. degree in Applied Chemistry or Chemistry or else Analytical Chemistry.

Junior Hydrogeologist (Scientist B) Group ‘A’

  • Aspirants must hold a Master’s degree in Geology/ Marine Geology/ Applied Geology or a Master’s in Hydrogeology.

Physical Standards

  • Aspirants should be physically fit for admission into the examination.
Exam Pattern

The general highlights of the CGGE Prelims exam for all the posts are given below.

Particulars Details
Mode of Exam Online Mode (CBT Exam)
Type of Questions Objective Type Questions (MCQs)
No. of Papers Two (Paper 1 and Paper 2)
Total Weightage 150 Marks (1 mark per question)
Duration of Exam 2 hours per paper
Negative Marking Criteria Negative Marking will be there

The following table consists of the details of Prelims exam papers and maximum marks according to the post.

Paper Subjects Post Max.Marks
One General Studies Geologist & Jr. Hydrogeologist 100
Two Geology/Hydrogeology 300
One General Studies Geophysicist 100
Two Geophysics 300
One General Studies Chemist 100
Two Chemistry 300
Total 400

Mains Exam Pattern

The candidates who qualify cutoff marks in the UPSC Prelims Exam are further shortlisted for the mains exam. The mains exam is an offline pen and paper-based exam to be completed within 3 hours.

The key details about the CGGE Mains exam are listed in the table below.

Particulars Details
Mode of Exam Offline Mode (Pen and Paper Exam)
Type of Questions Descriptive Questions
No. of Papers Three (Paper I, Paper II, and Paper III)
Duration of Exam 3 hours for each paper

The below-given table lists the details of each paper of each post along, including their marks and duration.

Subjects Post Max.Marks Duration
General English For all posts 100 180 Minutes
Geology Paper I Geologist 200 180 Minutes
Geology Paper II 200 180 Minutes
Geology Paper III 200 180 Minutes
Geophysics Paper I Geophysicist 200 180 Minutes
Geophysics Paper II 200 180 Minutes
Geophysics Paper III 200 180 Minutes
Chemistry Paper I Chemist 200 180 Minutes
Chemistry Paper II 200 180 Minutes
Chemistry Paper III 200 180 Minutes
Geology Paper I Jr. Hydrogeologist 200 180 Minutes
Geology Paper I 200 180 Minutes
Hydrogeology 200 180 Minutes
Total 600

General Studies

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


  • Physical geology
  • Paleontology
  • Sedimentology
  • Structural Geology
  • Stratigraphy
  • Economic Geology
  • Hydrogeology


  • Solid Earth Geophysics
  • Introduction to Geophysics and its branches
  • Mathematical Methods in Geophysics
  • Electromagnetism
  • Geophysical Prospecting
  • Remote Sensing and Thermodynamics
  • Nuclear Physics and Radiometry


  • Chemical periodicity
  • Chemical bonding and structure
  • Ionic bonding
  • Acids and bases
  • The 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
  • Molecular Rearrangements

Mains Exam Syllabus

In the Mains syllabus, there are multiple papers for each of the subjects. The topics from each paper of each subject are listed below.

Geology Paper I

  • Stratigraphy
  • Paleontology
  • Geomorphology and Remote Sensing
  • Structural Geology
  • Sedimentology

Geology Paper II

  • Mineralogy and Geochemistry & Isotope Geology
  • Environmental Geology and Natural Hazards
  • Igneous Petrology
  • Metamorphic Petrology & Processes

Geology Paper III

  • Engineering Geology
  • Geology of fuels
  • Indian mineral deposits and mineral economics
  • Ore genesis and Geophysics
  • Mineral exploration
  • Economic geology


  • Occurrence and distribution of groundwater
  • Groundwater movement and well hydraulics
  • Water wells and groundwater levels
  • Groundwater exploration
  • Groundwater quality and management

Geo Physics Paper I

  • Mathematical methods in Geophysics
  • Geophysical Inversion
  • Mathematical Methods of Physics
  • Introductory Atmospheric and Space Physics
  • Thermodynamics and Statistical Physics
  • Solid Earth Geophysics
  • Earthquake and Engineering Seismology

Geo Physics Paper-II

  • Molecular Physics & Atomic and Characterization of Materials and Properties
  • Nuclear and Particle Physics
  • Classical Mechanics
  • Geophysical Potential Fields
  • Electromagnetic Theory
  • Electrical and Electromagnetic methods
  • Seismic Prospecting.Borehole Geophysics

Geo Physics Paper-III

  • Geophysical Signal Processing
  • Remote Sensing and GIS applications
  • Digital electronics, Radar systems, Satellite communications
  • Quantum Mechanics
  • Solid State Physics
  • Laser systems
  • Laser cavity modes
  • Electronics and devices
  • Airborne Geophysical surveys for Geological Mapping OR Radiometric Exploration.
  • Marine Geophysics

Chemistry Paper I

  • Chemistry of coordination compoundsAcid-Base reactions
  • Precipitation and Redox Reactions
  • Organo-metallic compounds
  • Nuclear chemistry
  • S-Block Elements
  • Chemical periodicity
  • Chemical Bonding and structure
  • p-Block Elements
  • Chemistry of d- and f- block elements

Chemistry Paper II

  • UV Spectra
  • PMR Spectra
  • Quantum Chemistry
  • Basic principles and application of spectroscopy

Chemistry Paper III

  • Thermodynamics and Equilibrium
  • Acids-bases and solvents
  • Solutions of non-electrolytes
  • Chemical kinetics and catalysis
  • Adsorption and Surface Chemistry
  • Treatment of samples for chemical analysis
  • Volumetric Analysis
  • The theoretical basis of Quantitative inorganic analysis
  • Gravimetric Analysis
  • Kinetic theory and the gaseous state
  • The Collision of gas molecules, Real gases
  • Application of the Second law of thermodynamics
  • Acid-base titrations
  • Redox Titrations
  • Potentiometer Complex metric titrations
  • Chromatographic methods of analysis
  • UV-Visible Spectroscopy
  • Flame photometry and Atomic absorption spectrometry
  • X-ray methods of Analysis
  • Inductively coupled plasma spectroscopy
  • Analysis of Minerals, Ores, and Alloys
  • Organometallic compounds
  • Bonding and physical properties
  • Aldol and related reactions
  • Mechanism of some reactions
  • Electrocyclic Reactions
  • Organic Reaction Mechanisms
  • Organic Spectroscopy

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