The Combined Geo-Scientist (Main) Examination 2025 Chemistry Paper III question paper is now available for download for candidates who appeared in the exam or are preparing for upcoming attempts. Conducted by the Union Public Service Commission, this paper is an important resource for understanding the exam pattern, question difficulty, and topic-wise weightage in the Chemistry discipline. Aspirants can use the official question paper to analyse their performance or strengthen their preparation strategy.
I am sharing this update because previous year and recent main examination question papers play a critical role in serious UPSC preparation. Many candidates focus only on syllabus and notes, but real improvement comes from understanding how questions are framed in the actual exam. Access to the Chemistry Paper III question paper helps aspirants identify recurring concepts, improve answer structuring, and align their preparation more closely with UPSC’s expectations.
About Combined Geo-Scientist (Main) Examination 2025
The Combined Geo-Scientist Examination is conducted annually by UPSC to recruit eligible candidates for Group ‘A’ posts in various scientific departments of the Government of India. The Main Examination tests in-depth subject knowledge after the preliminary stage. Chemistry Paper III is one of the optional papers for candidates who have chosen Chemistry as their discipline.
Importance of Chemistry Paper III Question Paper
Chemistry Paper III focuses on advanced concepts that test both theoretical clarity and application-based understanding. Going through the actual question paper helps candidates understand:
- The balance between conceptual and analytical questions
- The level of depth expected in answers
- Frequently repeated topics and core areas
- Time management required for descriptive answers
Who Should Download This Question Paper
This question paper is useful for:
- Candidates who appeared in the Combined Geo-Scientist (Main) Examination 2025
- Aspirants preparing for future Geo-Scientist or Geologist exams
- Candidates opting for Chemistry as their optional subject
- Coaching institutes and self-study aspirants for practice and evaluation
How to Download Chemistry Paper III Question Paper
Aspirants can download the Chemistry Paper III question paper from the official UPSC website. The process is simple and does not require login credentials.
Candidates should:
- Visit the UPSC official website
- Navigate to the “Examinations” then “Previous Question Papers” section
- Select Combined Geo-Scientist (Main) Examination, 2025
- Choose Chemistry Paper – III and download the PDF
N.B: If you want to download the question paper without any difficulty, you can easily download it by Click Here.
It is advisable to save a copy for repeated practice and reference.


















