UPSC Combined Geo-Scientist Examination
UPSC (Union Public Service Commission) · Offline (Pen & Paper) · Once a year
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UPSC Geo Scientist Answer Key
Official and expected answer keys for UPSC Geo Scientist 2026. Check set-wise solutions and objection window details.
Answer key will be available after the exam. Check back for updates.
About UPSC Combined Geo-Scientist Examination (UPSC Geo Scientist) 2027
The UPSC Combined Geo-Scientist Examination (UPSC Geo Scientist) is one of the most competitive entrance exams, conducted by the UPSC (Union Public Service Commission). Preparing for the UPSC Geo Scientist requires systematic practice, conceptual clarity, and regular self-evaluation. Our platform offers dynamic mock tests, previous years' resolved papers, and AI-enabled analysis to help you secure a top rank.
Frequently Asked Questions
What posts are offered through UPSC Geo-Scientist 2027?
UPSC Combined Geo-Scientist recruits for Geologist in GSI (Geological Survey of India), Scientist B in GSI, Hydrogeologist in CGWB (Central Ground Water Board), Chemist in CGWB, and Junior Hydrogeologist in CGWB across India.
What is the UPSC Geo-Scientist exam pattern?
Stage 1 Prelims: General Studies (100Q) + Subject-specific MCQ (100Q). Stage 2 Mains: 3 conventional papers (Paper I, II, III — each 200 marks) in the chosen discipline (Geology/Hydrogeology/Geophysics/Chemical Science). Stage 3: Personality Test (200 marks).
What is GSI Geologist salary in 2027?
GSI Geologist (Group A) starts at ₹56,100-₹1,77,500 per month (Level 10). With DA, HRA, geological allowance, field duty allowance, and leave travel allowance, the effective package is ₹75,000-₹95,000 per month. GSI also provides subsidized housing and medical.
How many UPSC Geo-Scientist vacancies are expected in 2027?
UPSC Geo-Scientist 2027 is expected to have 70-100 vacancies. The 2024 notification had 77 vacancies while 2023 had 85. Geology stream has the most vacancies followed by Hydrogeology and Geophysics.
What is the MSc specialization required for UPSC Geo-Scientist?
For Geologist/GSI posts: MSc Geology, Applied Geology, or Marine Geology. For Hydrogeologist/CGWB: MSc Hydrogeology, Applied Geology with Hydrogeology, or MSc Geology with work experience. For Chemist/CGWB: MSc Chemistry or Chemical Sciences.
How to Prepare for UPSC Geo Scientist
Prelims General Studies section is the qualifying round — cover basics of Indian Geography, Environment, and General Science
Mains technical papers require deep domain knowledge — refer to standard MSc textbooks and GSI technical manuals
Previous year UPSC Geo-Scientist papers are essential — question patterns repeat in technical sections
For Geology, master Structural Geology, Petrology, Economic Geology, and Stratigraphy — these dominate Mains papers