UPSC Combined Geo-Scientist 2025 Chemistry Prelims Question Paper PDF
- Year 2025
- Conducted By UPSC
- Questions 120
- Maximum Marks 300
- Duration Two Hours
- Languages English
Exam Details
| Detail | Information |
|---|---|
| Examination | UPSC Combined Geo-Scientist (Preliminary) Examination |
| Year | 2025 |
| Conducting Body | UPSC |
| Paper | Paper-II CHEMISTRY |
| Subject | CHEMISTRY |
| Duration | Two Hours |
| Maximum Marks | 300 |
| Number of Questions | 120 |
| Question Type | Objective (MCQ) |
This document contains the question paper for the UPSC Combined Geo-Scientist (Preliminary) Examination 2025, Paper-II, focusing on CHEMISTRY. The exam is conducted by UPSC and allows candidates two hours to answer 120 objective questions for a maximum of 300 marks. This paper is crucial for aspirants aiming to qualify for the Geo-Scientist services, providing a direct look at the types of questions and difficulty level expected in the preliminary stage.
Major Topics Covered
- CHEMISTRY
- Atomic Orbitals
- Electronic Configuration
- Transition Series
- Oxidation States
- Periodic Table
Why This Paper is Important
- Useful for Combined Geo-Scientist (P) Examination preparation
- Helps understand the latest exam pattern
- Useful for practice and self-assessment
- Covers frequently asked General Studies topics
- Helpful for analysing question trends
Related Resources
- UPSC Combined Geo-Scientist (Preliminary) Examination 2024 Paper-II CHEMISTRY
- UPSC Combined Geo-Scientist (Main) Examination 2025 Paper-II CHEMISTRY
- UPSC Geo-Scientist 2025 Paper-I General Studies Question Paper
- UPSC Combined Geo-Scientist 2025 Chemistry Answer Key
- UPSC Combined Geo-Scientist Chemistry Syllabus
- UPSC Geo-Scientist Exam Pattern
- UPSC Combined Geo-Scientist Preliminary Exam Pattern
- UPSC Geo-Scientist Paper II Details
Instructions
- THIS TEST BOOKLET DOES NOT HAVE ANY UNPRINTED OR TORN OR MISSING PAGES OR ITEMS, ETC.
- IF SO, GET IT REPLACED BY A COMPLETE TEST BOOKLET.
- Please note that it is the candidate's responsibility to encode and fill in the Roll Number and Test
- Booklet Series Code A, B, C or D carefully and without any omission or discrepancy at the appropriate places in the OMR Answer Sheet.
- Any omission/discrepancy will render the Answer Sheet liable for rejection.
- You have to enter your Roll Number on the
- Test Booklet in the Box provided alongside.
- DO NOT write anything else on the Test Booklet.
- This Test Booklet contains 120 items (questions).
- Each item comprises four responses (answers).
- will select the response which you want to mark on the Answer Sheet.
- In case you feel that there is more than one correct response, mark the response which you consider the best.
- In any case, choose ONLY ONE response for each item.
- You have to mark all your responses ONLY on the separate Answer Sheet provided.
- in the Answer Sheet. All items carry equal marks.
- Before you proceed to mark in the Answer Sheet the response to various items in the Test Booklet,
- you have to fill in some particulars in the Answer Sheet as per instructions sent to you with your Admission Certificate.
- After you have completed filling in all your responses on the Answer Sheet and the examination has
- concluded, you should hand over to the Invigilator only the Answer Sheet.
- You are permitted to take away with you the Test Booklet.
- Sheets for rough work are appended in the Test Booklet at the end.
- THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE.
- There are four alternatives for the answer to every question.
- For each question for which a wrong answer (i) has been given by the candidate, one-third of the marks assigned to that question will be deducted as penalty.
- If a candidate gives more than one answer, it will be treated as a wrong answer even if one of the given (ii) answers happens to be correct and there will be same penalty as above to that question.
- If a question is left blank, i.e., no answer is given by the candidate, there will be no penalty for that (iii) question.
- DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE TOLD TO DO SO \sqrt{2.80072} (1-A)
Questions (page 2)
Q2. The correct order of penetrating ability of atomic orbitals is:
Q3. The correct electronic configuration of Platinum is: [Xe] (a) [Xe] (b) [Xe] (c) [Xe] (d) The element with the highest enthalpy of
Q4. The element with the highest enthalpy of atomization in the first transition series is :
Q5. An element forms an ion in the +IV oxidation state with electronic configuration : 5d10. Which group and period of the Modern Periodic Table does the element belong to?
Q6. The metallic elements of this group of the periodic table show the highest oxidation state of (+VI) at the bottom of the group and a stable oxidation state of (+III) at the top of the group. The group to which the elements belong in the Modern Periodic Table is :
Q7. The S2- ions prefer to bind to the :
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Frequently asked questions
What is the name of the examination?
The examination is the UPSC Combined Geo-Scientist (Preliminary) Examination.
What is the year of this question paper?
This question paper is from the year 2025.
Which paper is this question paper for?
This is Paper-II, focusing on CHEMISTRY.
Who conducts the Combined Geo-Scientist Examination?
The examination is conducted by UPSC (Union Public Service Commission).
What is the maximum number of marks for this paper?
The maximum marks for this paper are 300.
What is the time duration allowed for the examination?
The time allowed for the examination is Two Hours.