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Apply for Union Public Service Commission (UPSC) Combined Geo-Scientist Examination Recruitment 2027. Check eligibility, key dates, and vacancy details below.Total Posts: 127
The Union Public Service Commission (UPSC) is conducting the Combined Geo-Scientist Examination, 2027.
| Last Date to Apply | 2026-09-22 |
| Exam Date | 2026-09-02 |
| Date of Notification of Examination | 02.09.2026 |
| Last date for filling up of Application | 22.09.2026 |
| Total Vacancy | 127 Posts |
| Age Limit | •Government servants: 5 years |
Candidates are required to apply online only by using the Commission’s website https://upsconline.nic.in.
Register on the Online Application Portal to generate a Universal Registration Number (URN), which is common for all UPSC examinations.
Fill the Examination Specific Form, including details for fees and examination centre, to generate an Application Number.
Upload a photograph (live capture required) and three signatures (one below the other) on a plain white paper using black ink, ensuring they are clear and legible.
Everything you need to know about this recruitment. Can't find the answer you're looking for? Please contact our friendly team.
The online applications for the Combined Geo-Scientist Examination 2027 can be filled up to 22nd September, 2026 till 18:00 Hours.
The Combined Geo-Scientist (Preliminary) Examination 2027 is scheduled to be held on 10th January, 2027.
The Combined Geo-Scientist (Main) Examination 2027 will be held on 19th & 20th June, 2027.
The selection process consists of three successive stages: Stage-I (Preliminary Examination - Objective Type), Stage-II (Main Examination - Descriptive Type), and Stage-III (Personality Test/Interview).
Yes, there will be a penalty (Negative Marking) for wrong answers in the Objective Type Question Papers. One-third of the marks assigned to a question will be deducted for each wrong answer.
The Preliminary Examination carries 400 marks, the Main Examination carries 600 marks, and the Personality Test/Interview carries 200 marks. Marks from both Preliminary and Main Examinations are counted for final merit.
Candidates generally require a Master of Science or Master of Science (Tech) or Integrated Master of Science in relevant fields such as Geology, Geophysics, Chemistry, Hydrogeology, Physics, or Applied Physics from a recognized University or Institute. Specific requirements vary by post.
Candidates must apply online only through the Commission’s website https://upsconline.nic.in. The process involves creating a Universal Registration Number (URN), filling the Examination Specific Form, and uploading required documents like a live photograph and signature.
Non-Programmable type Pocket Calculators are allowed in the Descriptive/Conventional Type Papers of the Main Examination (Stage-II). However, calculators are not permitted for the Objective Type Papers of the Preliminary Examination (Stage-I).
All papers in both the Preliminary (Stage-I) and Main (Stage-II) Examinations will be set in English only, and conventional type papers must be answered in English only.
| Date of (Preliminary) Examination | 10.01.2027 |
| Date of (Main) Examination | 19.06.2027 & 20.06.2027 |
| General, OBC, EWS (Male) | ₹ 200 |
| Female, SC, ST, PwBD | ₹ 0 (Exempted) |
| Subject | Qs | Marks | Time | Medium |
|---|---|---|---|---|
| General Studies | - | 100 | 2 Hours | English |
| Geology/Hydrogeology | - | 300 | 2 Hours | |
| Preliminary Examination (Stage-I) - Geologist/Hydrogeologist Stream Total | - | 400 Marks | 4 hours (240 mins) | English |
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.
Provide details of one Photo ID (e.g., Aadhaar Card, Voter Card, PAN Card, Passport, Driving License), preferably an Aadhaar Card, which will be used for all future references and must be carried to the examination.
Physical Geology (Principle of uniformitarianism; origin, differentiation and internal structure of the Earth; origin of atmosphere; earthquakes and volcanoes; continental drift, sea-floor spreading, isostasy, orogeny and plate tectonics; geological action of rivers, wind, glaciers, waves; erosional and depositional landforms; weathering processes and products). Structural Geology (Stress, strain and rheological properties of rocks; planar and linear structures; classification of folds and faults; Mohr's circle and criteria for failure of rocks; ductile and brittle shear in rocks; study of toposheets, V-rules and outcrop patterns; stereographic projections of structural elements). Mineralogy (Elements of symmetry, notations and indices; Bravais lattices; chemical classification of minerals; isomorphism, polymorphism, solid solution and exsolution; silicate structures; physical and optical properties of common rock forming minerals- olivine, garnet, pyroxene, amphibole, mica, feldspar and quartz). Igneous Petrology (Magma types and their evolution; IUGS classification of igneous rocks; forms, structures and textures of igneous rocks; applications of binary and ternary phase diagrams in petrogenesis; magmatic differentiation and assimilation; petrogenesis of granites, basalts, komatiites and alkaline rocks (carbonatite, kimberlite, lamprophyre and nepheline syenite)). Metamorphic Petrology (Limits, types and controls of metamorphism; metamorphic structures- slate, schist and gneiss; metamorphic textures- pre, syn and post tectonic porphyroblasts; concept of metamorphic zone, isograd and facies; geothermal gradients, facies series and plate tectonics). Sedimentology.