UPSC Combined Geo-Scientist Examination 2027: 127 Posts, Apply Online

UPSC Combined Geo-Scientist Examination 2027 Vacancy Details

Category I: Geological Survey of India (111 posts)

Post	Group	No. of posts
Geologist	A	29
Chemist	A	7
Assistant Geologist	B	34
Assistant Geophysicist	B	35
Assistant Chemist	B	6
Total		111

Category II: Central Ground Water Board (16 posts)

Post	Group	No. of posts
Scientist 'B' (Hydrogeology)	A	5
Scientist 'B' (Chemical)	A	1
Scientist 'B' (Geophysics)	A	1
Assistant Hydrogeologist	B	7
Assistant Chemist	B	1
Assistant Geophysicist	B	1
Total		16

That is 127 posts in total across the two organisations, covering Geology, Geophysics, Chemistry and Hydrogeology specialisations.

Eligibility Criteria

You need a Master's degree in the relevant stream for the post you are applying for — Geology, Geophysics, Chemistry or Hydrogeology, depending on the vacancy. Read the official notification carefully, since the exact qualifying subject combination differs by post and by organisation.

Age Limit

You should be between 21 and 32 years of age as on 1 January 2027, meaning you must be born between 2 January 1995 and 1 January 2006. Age relaxation applies as per UPSC norms: 3 years for OBC candidates, 5 years for SC/ST candidates, and 10 years for PWD candidates. If you are unsure whether you fall within the eligible band, our age calculator works it out from your date of birth in seconds.

Application Fee

• General/OBC/EWS male candidates: Rs. 200
• Female/SC/ST/PWD candidates: No fee

The fee can be paid online through credit card, debit card, UPI or internet banking.

Selection Process

UPSC selects Geo-Scientist candidates through a three-stage examination:

Stage	Type	Maximum marks
Stage I: Preliminary Examination	Objective type (2 papers)	400
Stage II: Main Examination	Descriptive type (3 papers)	600
Stage III: Personality Test / Interview	—	200

The Preliminary Examination, scheduled for 10 January 2027, is split by stream:

Stream	Paper I: General Studies	Paper II (stream-specific)	Total
Stream I (Geology/Hydrogeology)	100 marks (2 hrs)	Geology/Hydrogeology — 300 marks (2 hrs)	400
Stream II (Geophysics)	100 marks (2 hrs)	Geophysics — 300 marks (2 hrs)	400
Stream III (Chemistry)	100 marks (2 hrs)	Chemistry — 300 marks (2 hrs)	400

Candidates who clear the Preliminary Examination sit the Main Examination, scheduled for 19-20 June 2027:

Stream	Paper I	Paper II	Paper III
Geology/Hydrogeology	Geology — 200	Geology — 200	Hydrogeology — 200
Geophysics	Geophysics — 200	Geophysics — 200	Geophysics — 200
Chemistry	Chemistry — 200	Chemistry — 200	Chemistry — 200

Only candidates who clear the Main Examination are called for the Personality Test / Interview, worth 200 marks with no separate qualifying cutoff — the usual UPSC pattern for a combined examination of this kind. The number of candidates called for interview is typically about twice the number of vacancies to be filled.

How to Apply for UPSC Combined Geo-Scientist Examination 2027

Applications must be submitted online only, through the official UPSC application portal. The application window opened on 2 September 2026 and closes on 22 September 2026.

1. Visit the official UPSC online application portal linked below.
2. Register with a valid email ID and mobile number.
3. Fill in your personal, educational and category details exactly as they appear in your certificates.
4. Upload your photograph and signature in the specified format and size — if your scanned files are too large for the portal, our image compressor can bring them under the limit without losing clarity.
5. Pay the applicable fee online, if your category is not exempted.
6. Review the form carefully, submit it, and download a copy for your records.

Read the full official notification before you start — this examination covers five distinct posts across two organisations, and the qualifying degree, age limit and post preference options differ enough between them that a quick skim is not sufficient.