Combined Geo-Scientist Main 2022 Geo-Physics Paper II PDF

Central Government Jobs Other Jobs 2022

  • Year 2022
  • Conducted By UPSC
  • Questions 10
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Combined Geo-Scientist (Main) Examination
Year 2022
Conducting Body UPSC
Paper Geo-Physics Paper - II
Subject Geo-Physics
Duration Three Hours
Maximum Marks 200
Number of Questions 10
Question Type Mixed

This is the Geo-Physics Paper II for the Combined Geo-Scientist (Main) Examination held in 2022, conducted by UPSC. The paper carries a maximum of 200 marks and candidates are allowed three hours to complete it. It consists of ten questions divided into two sections, with specific instructions on compulsory questions and the number of questions to be attempted from each section. This paper is a critical resource for aspirants preparing for the Geo-Scientist examination, offering insights into the types of questions, marking scheme, and the depth of knowledge required in Geo-Physics.

Major Topics Covered

  • Induced Polarization
  • Resistivity - Capacitance circuits
  • Membrane Potential
  • Electrode Potential
  • Sonic Log Acquisition
  • Rock Properties
  • Oil Migration
  • Capillary Pressure
  • Porosity Calculation
  • Physical Constants

Why This Paper is Important

  • Useful for Combined Geo-Scientist (Main) Examinatio 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 (Main) Examination 2022 - Geology Paper I
  • Combined Geo-Scientist (Main) Examination 2022 - Geology Paper II
  • Combined Geo-Scientist (Main) Examination 2022 - Geophysics Paper I
  • Combined Geo-Scientist (Main) Examination 2021 - Geo-Physics Paper II
  • Combined Geo-Scientist Main 2022 Geo-Physics Paper II Answer Key
  • Combined Geo-Scientist Main Syllabus
  • Geo-Physics Syllabus for UPSC Exams
  • Combined Geo-Scientist Main Exam Pattern

Instructions

  • There are TEN questions divided under TWO sections.
  • Candidate has to attempt SIX questions in all.
  • Out of the remaining EIGHT questions, FOUR questions are to be attempted choosing TWO from each section.
  • The number of marks carried by a question / part is indicated against it.
  • Neat sketches may be drawn to illustrate answers, wherever required.
  • These shall be drawn in the space provided for answering the question itself.
  • Unless otherwise mentioned, symbols and notations have their usual standard meanings.
  • Assume suitable data, if necessary, and indicate the same clearly.
  • Attempts of questions shall be counted in sequential order.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Any page or portion of the page left blank in the Question-cum-Answer (QCA) Booklet must be clearly struck off.
  • Answers must be written in ENGLISH only.
  • Physical Constants: = 9.109 \times 10^{-31} kg Electron rest mass, m_e 1.672 \times 10^{-27} kg Proton rest mass, m_p = 1.675 \times 10^{-27} kg Neutron rest mass, m_n = Atomic mass unit (C^{12} \equiv 12), a.m.u. = 1.661 \times 10^{-27} kg 9.27 \times 10^{-24} J/tesla Bohr magneton, \mu_R = 5.05 \times 10^{-27} J/tesla Nuclear magneton, \mu_N \qquad \qquad =\qquad 1.381\times10^{-23}\,\mathrm{J/K} Boltzmann constant, kB =

Questions (page 2)

Section A

Q1.

(a) Draw a neat diagram comparing the decay and build-up of voltage in Induced Polarization (IP) versus Resistivity – Capacitance (R - C) circuits. How are the two curves different? What are Membrane and Electrode Potential and why are they caused during IP measurements?

(b) What parameters are measured in sonic log acquisition and what major properties are derived from these parameters (one from each parameter)? Also write the standard corrections applied to sonic travel times.

(c) The given schematics shows representative curves for oil migration in a rock. The three rock types shown have a dominant quartz mineralogy. Answer the following:
(i) What do R1 and R3 and E1 and E3 represent ? State their respective values.
(ii) If the bulk densities of the three rock types are \rhob1 = 2.0 gm/cc, \rhob2 = 2.25 gm/cc and \rhob3 = 2.5 gm/cc, calculate the porosity in rock types 1 and 3 only. Also given \rho_{\textbrine} = 1.2 gm/cc, \rho_{\textore} = 0.75 gm/cc and \rho_{\textquartz} = 2.65 gm/cc.

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Frequently asked questions

What is the name of the examination?

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

What is the year of this question paper?

This question paper is from the year 2022.

Which paper is this?

This is Geo-Physics Paper - II.

Who conducts the Combined Geo-Scientist Examination?

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

What is the maximum marks for Geo-Physics Paper - II?

The maximum marks for this paper are 200.

What is the time allowed to complete the paper?

The time allowed is Three Hours.

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