How many questions are there in this paper?

There are 120 items (questions) in this Test Booklet.

What type of questions are asked in this paper?

The questions are objective type, with four alternatives for each question.

Is there any penalty for wrong answers?

Yes, there is a penalty for wrong answers. One-third of the marks assigned to the question will be deducted.

What should a candidate do if the test booklet has missing or torn pages?

The candidate should immediately get it replaced by a complete test booklet from the invigilator.

Where should the candidate mark their answers?

All responses must be marked ONLY on the separate OMR Answer Sheet provided.

Can candidates take the Test Booklet with them after the exam?

Yes, candidates are permitted to take away the Test Booklet with them.

UPSC Combined Geo-Scientist 2025 Geophysics Paper II Question Paper PDF

Name: UPSC Combined Geo-Scientist 2025 Geophysics Paper II Question Paper PDF
Creator: UPSC
Keywords: Combined Geo-Scientist (Preliminary) Examination 2025, UPSC Geophysics Paper II, Geo-Scientist 2025 Question Paper, Geophysics Previous Year Paper, UPSC Exam Paper PDF, Combined Geo-Scientist Syllabus, Geophysics Objective Questions, 2025 UPSC Exam, Paper II Geophysics, UPSC Combined Geo-Scientist

Central Government Jobs Other Jobs 2025

Year 2025
Conducted By UPSC
Questions 120
Maximum Marks 300
Duration Two Hours
Languages English

Exam Details

Detail	Information
Examination	Combined Geo-Scientist (Preliminary) Examination
Year	2025
Conducting Body	UPSC
Paper	Paper - II Geophysics
Subject	Geophysics
Duration	Two Hours
Maximum Marks	300
Number of Questions	120
Question Type	Objective (MCQ)

This is the official question paper for the UPSC Combined Geo-Scientist (Preliminary) Examination 2025, Paper II, focusing on Geophysics. The paper carries a maximum of 300 marks and is to be completed within a time limit of two hours. It contains 120 objective-type questions, designed to assess candidates' knowledge in the field of Geophysics. Aspirants can use this paper for practice and to understand the exam pattern and difficulty level.

Major Topics Covered

Geophysics
Rheology
Nuclear Physics
Nuclear Quadrupole Moments
Nuclear Magneton
Bohr Magneton
Binding Energy
Fission
Bethe-Weizsäcker Mass Formula
Stellar Nucleosynthesis
Proton-Proton Cycle
Fusion Processes

Why This Paper is Important

Useful for Combined Geo-Scientist (Preliminary) Exa 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

Combined Geo-Scientist (Preliminary) Examination 2024 Geophysics Paper II
Combined Geo-Scientist (Main) Examination Geophysics Papers
UPSC Geologist Examination Previous Papers
GATE Geophysics 2025 Question Paper
Combined Geo-Scientist (Preliminary) Examination 2025 Geophysics Paper II Answer Key
Combined Geo-Scientist (Preliminary) Examination Syllabus
Geophysics Syllabus for Competitive Exams
UPSC Exam Syllabus

Instructions

IMMEDIATELY AFTER THE COMMENCEMENT OF THE EXAMINATION, YOU SHOULD CHECK THAT 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 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).
You 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. See directions in the Answer Sheet.
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.
Penalty for wrong answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE.

Questions (page 2)

Q1. Rheology is the study of (a) mountain building process deformation and flow of sol (b) materials (c) deformation and flow of liqu materials and gases (d) gravity effect of the Sun and tl Moon

(a) mountain building process
(b) deformation and flow of solid materials
(c) deformation and flow of liquid materials and gases
(d) gravity effect of the Sun and the Moon

Q2. Consider the following nuclear electric quadrupole moments (Q) of the nuclei:

Nuclide

Q (in barn)

133Cs
-0.003

161Dy
+2.401

63Cu
-0.209

Which one of the following statements regarding the shape of these nuclei is correct?

(a) 63Cu is prolate, 133Cs is near spherical and 161Dy is oblate.
(b) 63Cu and 133Cs are prolate and 161Dy is oblate.
(c) 63Cu and 161Dy are oblate and 133Cs is prolate.
(d) 63Cu is oblate, 133Cs is near spherical and 161Dy is prolate.

Q3. The ratio of the nuclear magneton ar Bohr magneton is 1836 (b) (c) 3672

(a) 1836
(b) 1/1836
(c) 3672
(d) 1/3672

Q4. Which one of the following has maximum binding energy per nucleon?

(a) ^4₂He
(b) ^{12}_6C
(c) ^{58}_{28}Ni
(d) ^{208}_{82}Pb

Q5. A heavy nucleus goes to spontaneous symmetric fission. The energy released using the Bethe-Weizsäcker mass formula (neglecting pairing term) is given by

(a) a_sA^2/3(1-2^1/3) + a_c(Z²)/(A^1/3)(1-2^-2/3)
(b) a_sA^2/3(1 + 2^1/3) + a_c(Z²)/(A^1/3)(1-2^2/3)
(c) a_sA^2/3(1 + 2^1/3) + a_c(Z²)/(A^1/3)(1 + 2^-2/3)
(d) a_sA^2/3(1-2^1/3) + a_c(Z²)/(A^1/3)(1-2^2/3)

Q6. In the Sun, the fusion process generates energy using proton-proton cycle. Which one of the following reactions is dominating in the ^3He burning process?

(a) ^3He + ^4He → ^7Be + γ
(b) ^3He + ^2H → ^4He + p
(c) ^3He + ^3H → ^4He + d
(d) ^3He + ^3He → ^4He + 2p

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Frequently asked questions

What is the name of the examination?

The examination is the Combined Geo-Scientist (Preliminary) Examination.

Which year is this question paper for?

This question paper is for the year 2025.

Who conducts the Combined Geo-Scientist Examination?

The examination is conducted by UPSC (Union Public Service Commission).

What is the subject of Paper II?

Paper II is on Geophysics.

What is the maximum marks for this paper?

The maximum marks for Paper II are 300.

What is the time duration allowed for this paper?

The time allowed for this paper is Two Hours.

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