CS (Main) Exam 2020 Geology Paper II Question Paper PDF

Central Government Jobs Other Jobs 2020

  • Year 2020
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages Hindi & English

Exam Details

Detail Information
Examination CS (Main) Exam
Year 2020
Conducting Body UPSC
Paper Geology Paper II
Subject Geology
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Descriptive / Subjective

This is the Geology Paper II for the CS (Main) Examination held in 2020, conducted by UPSC. The paper carries a maximum of 250 marks and candidates are allowed three hours to complete it. It consists of eight descriptive questions divided into two sections, with questions 1 and 5 being compulsory. Aspirants must attempt a total of five questions, ensuring at least one from each section. This paper is crucial for candidates specializing in Geology and aiming for success in the Civil Services examination.

Major Topics Covered

  • Refractive index of minerals
  • Microscope usage
  • Crystal symmetry
  • Thermal metamorphism
  • Magma crystallization
  • Sedimentary rocks classification
  • Crystal structure of amphiboles
  • Paragenesis of minerals
  • Hexagonal crystal system
  • Pleochroism of minerals
  • Rock texture
  • Petrogenesis of anorthosites
  • Prograde metamorphism
  • Impure carbonate rocks

Why This Paper is Important

  • Useful for CS (Main) Exam 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

  • CS (Main) Exam 2020 Geology Paper I
  • CS (Main) Exam 2019 Geology Paper II
  • UPSC Geology Optional Papers
  • CS (Main) Exam 2020 Geology Paper II Answer Key
  • CS (Main) Exam Geology Syllabus
  • UPSC Geology Optional Subject Syllabus
  • CS (Main) Exam Pattern
  • UPSC Civil Services Exam Pattern

Instructions

  • पुस्तिका के मुखपृष्ठ पर निर्दिष्ट स्थान पर किया जाना चाहिए ।
  • प्राधिकृत माध्यम के अतिरिक्त अन्य किसी माध्यम में लिखे गए उत्तर पर कोई अंक नहीं मिलेंगे ।
  • प्रश्नों की शब्द सीमा, जहाँ उल्लिखित है, को माना जाना चाहिए।
  • आरेख/रेखाचित्र, जहाँ जरूरत हो, प्रश्न का उत्तर देने के स्थान पर ही खींचा जा सकता है।
  • प्रश्नों के प्रयासों की गणना क्रमानुसार की जाएगी ।
  • आंशिक रूप से दिए गए प्रश्नों के उत्तर को भी मान्यता दी जाएगी यदि उसे काटा न गया हो ।
  • प्रश्न-सह-उत्तर पुस्तिका में खाली छोड़े गए कोई पृष्ठ अथवा पृष्ठ के भाग को पूर्णतः काट दीजिए ।

  • There are EIGHT questions divided in TWO SECTIONS and printed both in HINDI and in ENGLISH.
  • Candidate has to attempt FIVE questions in all.
  • Questions No. 1 and 5 are compulsory and out of the remaining, THREE are to be attempted choosing at least ONE question from each Section.
  • The number of marks carried by a question/part is indicated against it.
  • Answers must be written in the medium authorized in the Admission Certificate which must be stated clearly on the cover of this Question-cum-Answer (QCA) Booklet in the space provided.
  • No marks will be given for answers written in a medium other than the authorized one.
  • Word limit in questions, wherever specified, should be adhered to.
  • Diagrams/Sketches, wherever required, may be drawn in the space provided for answering the question itself.
  • 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 Booklet must be clearly struck off.

Questions (page 2)

Section A

Q1.

(a) खनिजों का अपवर्तनांक आप कैसे मापेंगे और सूक्ष्मदर्शी के नीचे उच्च और निम्न भू-आकृति में भेद कैसे करेंगे ?
How do you measure refractive index of minerals and distinguish high and low relief minerals under microscope?

(b) एक क्रिस्टल के सममिति तत्वों के संबंध में लिखिए।
Write about the symmetry elements of a crystal.

(c) तापीय रूपांतरण के कारण शैलों द्वारा प्रदर्शित प्रमुख लक्षणों को स्पष्ट कीजिए।
Explain the salient features exhibited by rocks due to thermal metamorphism.

(d) मैग्मा के क्रिस्टलीकरण को समझने के लिए एल्बाइट-एनोर्थाइट ठोस विलयनों का तात्पर्य उपयुक्त उदाहरणों द्वारा स्पष्ट कीजिए।
Explain with suitable examples the implications of albite-anorthite solid solutions in the understanding of crystallisation of magma.

(e) अवसादी शैलों को सामान्यतः उनके निर्माण के प्रक्रम के आधार पर कैसे वर्गीकृत करते हैं ?
How are sedimentary rocks classified in general based on their process of formation?

Section A

Q2.

(a) मोनोक्लिनिक एम्फीबोल्स की क्रिस्टल संरचना का वर्णन कीजिए और खनिज उदाहरण का उल्लेख उनके सूत्रों के साथ कीजिए। उनकी परा-उत्पत्ति (पेराजनेसिस) पर एक टिप्पणी भी लिखिए।
Write about the crystal structure of monoclinic amphiboles and cite mineral examples along with their formula. Add a note on their paragenesis.

(b) प्रक्षेपण रेखाचित्रों द्वारा षट्कोणीय प्रणाली के क्रिस्टलीय रूपों के संबंध में संक्षेप में वर्णन कीजिए।
Briefly write about the crystal forms of hexagonal system using projection diagrams.

(c) खनिजों के प्लीओक्रोइज्म की परिभाषा दीजिए और खनिजों में भेद करने के लिए प्लीओक्रोइज्म की उपयोगिता सोदाहरण बताएं।
Define pleochroism of minerals and write about the utility of pleochroism to distinguish minerals and provide examples.

Section A

Q3.

(a) शैल के गठन शब्द से आप क्या समझते हैं ? आग्नेय शैलों के गठनों के साथ मैग्मज क्रिस्टलीकरण प्रक्रम का संबंध आप कैसे स्थापित करेंगे ?
What do you understand by the term texture of a rock? How do you relate the textures of igneous rocks with the process of magmatic crystallisation?

(b) एनोर्थोसाइटस की पेट्रोजनेसिस की आलोचनात्मक विवेचना कीजिए। एनोर्थोसाइटस के वितरण के विवर्तनिक महत्व पर टिप्पणी कीजिए।
Critically discuss the petrogenesis of anorthosites. Comment on the tectonic significance on the distribution of anorthosites.

(c) अशुद्ध कार्बोनेट शैलों पर पुर:क्रमण कायांतरण के प्रभावों की व्याख्या कीजिए।
Explain the effects of prograde metamorphism on impure carbonate rocks.

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Frequently asked questions

What is the name of the exam for which this paper was conducted?

This paper is from the CS (Main) Exam, 2020.

Which conducting body organized this exam?

The exam was conducted by UPSC.

What is the subject of this question paper?

The subject is Geology, specifically Paper II.

What is the maximum marks for this paper?

The maximum marks for this paper is 250.

What is the time allowed to complete the paper?

The time allowed is Three Hours.

How many questions are there in total?

There are a total of eight questions.

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