UPSC Geo-Scientist 2018 Chemistry Paper III Question Paper PDF

Central Government Jobs Other Jobs 2018

  • Year 2018
  • Conducted By UPSC
  • Questions 10
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Combined Geo-Scientist and Geologist Examination
Year 2018
Conducting Body UPSC
Paper Chemistry Paper – III
Subject Chemistry
Duration Three Hours
Maximum Marks 200
Number of Questions 10
Question Type Mixed

This is the Chemistry Paper III from the UPSC Combined Geo-Scientist and Geologist Examination held in 2018. The paper carried a maximum of 200 marks and was allocated a time duration of three hours. It consists of a mix of objective and descriptive questions, divided into two sections. Candidates are required to attempt a total of six questions, with specific compulsory questions in each section. This paper is a crucial resource for aspirants aiming to understand the exam's scope, question difficulty, and marking scheme for effective preparation.

Major Topics Covered

  • Chemistry
  • Titration
  • Spectroscopy
  • Chromatography
  • Analytical Chemistry

Why This Paper is Important

  • Useful for Combined Geo-Scientist and Geologist 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

  • UPSC Geo-Scientist 2017 Chemistry Paper III
  • UPSC Geo-Scientist 2019 Chemistry Paper III
  • UPSC Geologist Exam 2018 Paper I
  • UPSC Geologist Exam 2018 Paper II
  • UPSC Geo-Scientist 2018 Chemistry Paper III Answer Key
  • UPSC Geo-Scientist Syllabus
  • UPSC Geologist Exam Syllabus
  • UPSC Geo-Scientist Exam Pattern

Instructions

  • There are TEN questions divided under TWO sections.
  • Candidate has to attempt SIX questions in all.

Questions (page 2)

Section A

Q1. Answer all of the questions given below. Give reasons for the following observation:

(a) Phenolphthalein indicator cannot be used in the titration of sodium carbonate with hydrochloric acid solution.

(b) Iodimetric titrations are usually carried out in neutral solutions.

(c) A small amount of magnesium salt is added to the EDTA solution used for the titration of calcium by using Eriochrome Black T indicator.

(d) Source modulation is used in atomic absorption spectroscopy.

(e) Zone broadening is inevitable in column chromatographic analysis.

(f) ICP method is better suited for multielemental analysis than flame atomic absorption method.

(g) Glass pH electrode tends to indicate a pH lower than the actual pH in strongly basic solutions.

(h) Electron capture detector is a selective detector.

Section A

Q2. Distinguish between the following :

(a) Co-precipitation and

(b) Iodimetry and Iodometry

(c) Gas liquid chromatography and High performance liquid chromatography

(d) Proximate analysis and Ultimate analysis

(e) Aniline point and Cloud point

(f) Primary standard and Secondary standard in volumetric analysis

Question paper preview

Scanned pages 1–2 for reference. Download the official PDF for the full paper.

Page 1
UPSC Geo-Scientist 2018 Chemistry Paper III question paper page 1 instructions scan PDF download
Page 2
UPSC Geo-Scientist 2018 Chemistry Paper III question paper page 1 instructions scan PDF download

Free question paper download

Download question paper PDF

  • 3.9 MB
  • 10 pages
  • PDF format

Frequently asked questions

What is the name of the examination?

The examination is the Combined Geo-Scientist and Geologist Examination.

Which paper is this question paper for?

This is for Chemistry Paper – III.

What is the conducting body for this exam?

The Union Public Service Commission (UPSC) conducts this examination.

In which year was this examination conducted?

The examination was conducted in 2018.

What is the maximum marks for Chemistry Paper – III?

The maximum marks for Chemistry Paper – III is 200.

What is the time duration allowed for this paper?

The time allowed for this paper is Three Hours.

← Back to Other Jobs papers