UPSC Geoscientist 2026: Notification Out,Syllabus,Eligibility

The UPSC Geo Scientist 2027 exam is the Union Public Service Commission's route into scientific careers at the Geological Survey of India (GSI) and the Central Ground Water Board (CGWB). Through it, UPSC recruits Geologists, Geophysicists, Chemists, Hydrogeologists and their Assistant-grade counterparts.

For the 2027 cycle, UPSC has notified 127 tentative vacancies. The online application window closed on 22 September 2026, and the Preliminary Examination is scheduled for 10 January 2027.

This page brings together everything from the official notice (Examination Notice No. 01/2027-GEOL) in one place: dates, vacancies, the application process, eligibility, the selection process, exam pattern, syllabus, books, preparation tips, admit card, answer key and salary.

UPSC Geo Scientist 2027 Overview

Latest Updates (as of 23 September 2026)

• The online application window closed on 22 September 2026 at 6:00 PM.

• The Prelims is on 10 January 2027. This is about four weeks earlier than the 2026 cycle, when the Prelims was held on 8 February 2026.

• Vacancies have risen to 127 from 85 in the 2026 cycle.

• The e-Admit Card for the Prelims is expected in the first week of January 2027 (see the admit card section below).

UPSC Geo Scientist Notification 2027

UPSC released the Combined Geo-Scientist Examination 2027 notification on 2 September 2026, based on examination rules published by the Ministry of Mines in the Gazette of India on the same date. At this stage, applications were invited only for the Preliminary Examination. Candidates who qualify the Prelims are then allowed to sit the Mains.

The notice covers eligibility, vacancies, exam scheme, syllabus, reservation rules and physical standards. Download it from the official website and read the section for your stream carefully, because qualifications differ from post to post.

UPSC Combined Geo-Scientist Exam 2027 at a Glance

UPSC Geo Scientist 2027 Important Dates

UPSC Geo Scientist Vacancy 2027

Of these, 8 GSI posts and 2 CGWB posts are reserved for Persons with Benchmark Disabilities. UPSC states that the numbers may change.

What this means for your stream: 84 of the 127 posts are Group B. Geophysics candidates have no GSI Group A seat this year but can target 36 Group B openings and one CGWB Scientist 'B' post. Geology candidates have the widest choice, while Chemistry candidates compete for 15 seats across both organisations.

UPSC Geo Scientist Apply Online 2027

The application window has closed for this cycle. The process below is useful for checking your submitted form and for planning the next cycle.

UPSC's portal at upsconline.nic.in has four modules. The first three are common to all UPSC exams and can be filled at any time. The fourth is exam-specific and opens only during the notified window.

1. Account creation: Register with a valid email ID and mobile number.

2. Universal Registration Number (URN): Generated once in a lifetime and used for all UPSC exams. UPSC allows a one-time edit of the URN profile, but changes apply only to applications submitted afterwards.

3. Common Application Form (CAF): Upload your photograph, capture a live photo, and upload your signature signed three times on white paper in black ink. Keep scanned copies of age, qualification and category certificates ready.

4. Exam-specific module: Choose your stream, service preferences and Prelims centre, then pay the fee.

A few rules matter here. Centres are allotted on a first-apply-first-allot basis. Applications cannot be withdrawn, and no field can be corrected after submission. Candidates already in government service must inform their head of office in writing.

UPSC Geo Scientist Application Fee

The fee could be paid through net banking, credit or debit card, or UPI. You pay only once, even if you apply for both GSI and CGWB posts.

UPSC Geo Scientist Selection Process 2027

Selection for UPSC Geo Scientist 2027 happens in three stages, and marks from all three count towards the final merit list.

Stage I: Preliminary Examination

Two objective papers on an OMR sheet, carrying 400 marks in total. Paper I is General Studies (common to all streams) and Paper II is your stream subject. Candidates must clear separate minimum qualifying marks in each paper. About six to seven times the number of vacancies are shortlisted for Mains, which works out to roughly 760 to 890 candidates this year.

Stage II: Main Examination

Three descriptive papers of 200 marks each, all from your stream, for a total of 600 marks. Candidates who miss even one paper are disqualified.

Stage III: Personality Test

A 200-mark interview with no minimum qualifying mark. About twice the number of vacancies are called. The board assesses leadership, initiative, intellectual curiosity, integrity and aptitude for field life.

Note: Some pages describe the Prelims as "qualifying only" or as a computer-based test. Both are incorrect. Per the notice, Prelims marks count towards final merit, and the Prelims is held on OMR sheets.

UPSC Geo Scientist Eligibility 2027

Age Limit

Educational Qualification

A Master's degree here means at least two years of study after graduation. Final-year students may apply provisionally and must upload proof of passing within a 10-day window after the Mains result. Holders of Geo-Exploration or Applied Geology degrees are eligible for both the Geophysics and Geology/Hydrogeology streams but must choose one.

UPSC Geo Scientist Exam Pattern 2027

Prelims Exam Pattern

One-third of the marks for a question is deducted for every wrong answer, while unanswered questions carry no penalty. Calculators are not allowed.

Mains Exam Pattern

Each paper carries 200 marks and lasts 3 hours. Non-programmable calculators are permitted. The grand total across all stages is 1,200 marks. In case of a tie, UPSC ranks candidates by their subject-paper and interview marks, then by subject-paper marks alone, and then by age.

UPSC Geo Scientist Syllabus 2027

Paper I of the UPSC Geo Scientist 2027 Prelims is set at science-graduate level. Paper II and all Mains papers are approximately M.Sc. level. There is no practical exam.

The Mains goes deeper into the same subjects and adds areas such as geochemistry, mineral exploration, fuel and engineering geology, seismology, geophysical inversion and groundwater management.

Best Books for UPSC Geo Scientist 2027

Your M.Sc. textbooks remain the core reference, because the papers are set at that level. These standard titles are widely used:

UPSC Geo Scientist Preparation Tips

With about 15 weeks left until the UPSC Geo Scientist 2027 Prelims, a phased plan works better than reading the syllabus front to back.

A few habits make the biggest difference:

• Respect the GS cut-off. Paper I has its own minimum qualifying mark, and strong subject scorers do get eliminated here.

• Guess selectively. With a one-third penalty, blind guessing works against you, but eliminating two options first tilts the odds in your favour.

• Practise without a calculator. Numerical questions in Prelims must be solved by hand.

• Start Mains answer writing early. The gap between Prelims and Mains is about five months, and descriptive answers with diagrams take time to master.

UPSC Geo Scientist Interview

The Personality Test carries 200 marks, which is a sixth of the total, so it can move your final rank considerably. Expect questions on your M.Sc. dissertation, fieldwork experience, the roles of GSI and CGWB, and current issues such as critical minerals, groundwater depletion and natural hazards. The board specifically looks for candidates who can adapt to field life, so be ready to discuss field camps and practical work honestly.

UPSC Geo Scientist Admit Card 2027

UPSC issues the e-Admit Card on the last working day of the week before the exam, and does not send admit cards by post. Download it from upsconline.nic.in and check your name, photograph, roll number and centre. If you have not received it a week before the exam, contact UPSC immediately. Carry the admit card along with the photo ID you entered in your URN profile. Entry closes 30 minutes before each session, and face authentication is mandatory.

UPSC Geo Scientist Answer Key 2027

UPSC provides an online window for representations on the Prelims questions and provisional answer key. The window runs from the 3rd day after the exam until 6:00 PM on the 7th day. Representations are accepted only through upsconline.nic.in, and none are entertained after the window closes. Use the provisional key to estimate your score and plan whether to start Mains preparation at full speed.

UPSC Geo Scientist Salary 2027