CGGE : An Ultimate and Free Guide

Combined Geo-Scientist and Geologist Examination (CGGE)  is conducted by Union Public Service Commission (UPSC) for the recruitment of Geologist, Geophysicist in GSI, and Hydro-Geologist for Central Ground Water Board.


Highlights of CGGE Exam

Exam Combined  Geo-Scientist and Geologist Examination (CGGE)
Organizing body Union Public Service Commission
Exam Mode Paper & Pen (Offline)
Frequency Once a year
Selection Process Written Test & Personality Test
Number of Registration Approx. 2 lakh
Official website



UPSC generally releases the notification of the Combined Geo-Scientist and Geologist Examination (CGGE) in the month of September. Aspirants willing to appear for CGGE can apply online by visiting the official website of UPSC.

Notification Month
CGGE  Notification September
CGGE Exam-1 January
CGGE Exam-2 August
CGGE Result After 2-3 months of Exam


Eligibility Criteria: CGGE


1. Nationality

  • The candidate must be a citizen of India to be eligible for the Combined Defence Services (CDS) must be either of the following :
  • Candidates must be a citizen of India
  • Candidates must be a citizen of Nepal or a subject of Bhutan.
  • Candidates must be Tibetan refugees who came to India before January 1, 1962, for settling permanently in India.
  • Candidates must a person of Indian origin who has migrated from Burma, Pakistan, Ethiopia, Sri Lanka, Kenya, Myanmar, Uganda, Malawi, Tanzania, Vietnam, Zaire with the motive to settle permanently in India.


2. Educational Qualification

Post Qualification
Geologist in GSI Master’s degree in Geological Science or Geology or Applied Geology or Geo-Exploration or Mineral Exploration or Marine Geology or Engineering Geology or Earth Science and Resource Management or Oceanography and Coastal Areas Studies or Petroleum Geosciences or Petroleum Exploration or Geochemistry or Geological Technology from a recognized University
Geophysicist in GSI


Master’s in Physics or Applied Physics or Geophysics or Integrated M.Sc (Exploration Geophysics) or M.Sc (Applied Geophysics) or M.Sc  (Marine Geophysics) or M.Sc(Tech in Applied Geophysics) from a recognized University
Chemist in GSI M.Sc in Chemistry or Applied Chemistry or Analytical Chemistry from a recognized University.
Junior in Central Ground Water Board Master’s in Geology or Applied Geology or Marine Geology from a recognized University


3. Age Limit

A candidate should be a minimum of 21 years and a maximum of 32 years to appear for the CGGE. The maximum age mentioned above is relaxable for the following candidates :

  1. Scheduled Caste/Scheduled Tribe (SC/ST): 5 years
  2. Other Backward Classes(OBC) : 3 Years
  3. Defence Service Personnel : 3 years
  4. Ex-servicemen and ECOs/SSCOs who have served at least 5 years in Military Service as of 1st of August of the Notification Year: 5 years
  5. Blind, Deaf-mute and physically handicapped person: 10 Years.


4. Physical Standard 

The candidate needs to be physically and mentally fit for applying in the CGGE as per the details mentioned in the advertisement.



UPSC conducts the CGGE exam in three-level as mentioned below. The candidate who clears the written test will be called for the subsequent main exam and then for Personality Test.


Stage 1: Written Test  /Preliminary Test

The Combined Geo-Scientist Examination (Preliminary) consist of two paper, of which General Studies is common to all.

Stream Subject Duration Maximum Mark
Geologist & Hydrogeologist Paper 1: General Studies 2 hours 100
Paper 2: Geology /Hydrogeology 2 hours 300
Geophysicist Paper 1: General Studies 2 hours 100
Paper 2: Geophysics 2 hours 300
Chemist Paper 1: General Studies 2 hours 100
Paper 2: Chemistry 2 hours 300


Stage 2: Mains Exam

The Combined Geo-Scientist Examination (Mains) consists of three papers, this is a descriptive type exam.

Stream Subject Duration Maximum Mark
Geologist Paper 1: Geology 3 hours 200
Paper 2: Geology 3 hours 200
Paper 3: Geology 3 hours 200
Geophysicist Paper 1: Geophysics 3 hours 200
Paper 2: Geophysics 3 hours 200
Paper 3: Geophysics 3 hours 200
Chemist Paper 1: Chemistry 3 hours 200
Paper 2: Chemistry 3 hours 200
Paper 3: Chemistry 3 hours 200
Hydrogeologist Paper 1: Geology 3 hours 200
Paper 2: Geology 3 hours 200
Paper 3: Hydrogeology 3 hours 200


Stage 3-Personality Test/ Interview

The candidate who qualifies for the mains exam is called for the interview process. This is the last and final stage of the recruitment cycle before the results are declared. The maximum mark in the interview is 200.


Board takes the interview which consists of the competent panelists, who would judge the candidature on the following ground :

  • Mental Attentiveness
  • Critical power of assimilation
  • Clear and Logical Interpretation
  • Balance of Judgement
  • Ability of social solidarity and leadership


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