UPSC Geo-Scientist 2018 Chemistry Paper II Question Paper PDF

Central Government Jobs Other Jobs 2018

  • Year 2018
  • Conducted By UPSC
  • Questions 15
  • 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-II
Subject Chemistry
Duration Three Hours
Maximum Marks 200
Number of Questions 15
Question Type Mixed

This is the Chemistry Paper-II question paper for the 2018 Combined Geo-Scientist and Geologist Examination conducted by UPSC. The paper is designed to assess candidates' knowledge in Chemistry, with a total of 15 questions divided into three sections. Candidates are required to attempt a specific number of questions from each section, with Section A being compulsory. The exam allows three hours to complete and carries a maximum of 200 marks. This paper is crucial for aspirants preparing for the Geo-Scientist and Geologist roles, providing valuable insights into the exam structure and difficulty level.

Major Topics Covered

  • Chemistry
  • Geo-Scientist
  • Geologist
  • UPSC Exams

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

  • Combined Geo-Scientist and Geologist Examination 2017 Chemistry Paper-II
  • Combined Geo-Scientist and Geologist Examination 2019 Chemistry Paper-II
  • UPSC Geo-Scientist General Studies Paper 2018
  • UPSC Geo-Scientist Chemistry Paper-I 2018
  • Combined Geo-Scientist and Geologist Examination 2018 Chemistry Paper-II Answer Key
  • UPSC Geo-Scientist Chemistry Syllabus
  • UPSC Geologist Exam Syllabus
  • UPSC Geo-Scientist Exam Pattern

Instructions

  • There are FIFTEEN questions divided under THREE Sections.
  • Candidate has to attempt TEN questions in all.
  • The ONLY question in Section A is compulsory.
  • In Section B, SIX out of NINE questions are to be attempted.
  • In Section C, THREE out of FIVE questions are to be attempted.
  • The number of marks carried by a question/part is indicated against it.
  • Neat sketches are to be drawn to illustrate answers, wherever required.
  • 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 QCA Booklet must be clearly struck off.
  • Answers must be written in ENGLISH only.

Questions (page 2)

Q1.

(a) Calculate the de Broglie wavelength of an electron accelerated through a potential difference of 100 V. (Mass of electron = 9.109 imes 10^{-31} kg, charge of electron = 1.602 imes 10^{-19} C, Planck's constant = 6.626 imes 10^{-34} J s).

(b) Explain the concept of quantum defect and its significance in spectroscopy.

(c) Discuss the Born-Haber cycle and its application in calculating the lattice energy of ionic compounds.

(d) What is meant by the term 'thermodynamic stability'? Discuss the factors affecting the thermodynamic stability of a chemical compound.

(e) Explain the principle of spectroscopy and discuss the different types of spectroscopic techniques based on the interaction of electromagnetic radiation with matter.

Q2.

(a) Derive the expression for the energy levels of a particle in a one-dimensional box.

(b) Discuss the Hund's rule of maximum multiplicity and its application in determining the ground state electronic configuration of atoms.

(c) Explain the concept of resonance and its contribution to the stability of molecules. Provide examples.

(d) What are the limitations of the Bohr model of the atom? Discuss the development of the quantum mechanical model of the atom.

Q3.

(a) Calculate the root mean square velocity, average velocity and most probable velocity of oxygen molecules at 27°C. (R = 8.314 J K^{-1} mol^{-1}).

(b) Explain the concept of activation energy and discuss its role in chemical kinetics. How can it be determined experimentally?

(c) Discuss the different types of intermolecular forces and their influence on the physical properties of substances.

(d) What is meant by the term 'chemical potential'? Discuss its significance in thermodynamics and its relation to Gibbs free energy.

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Frequently asked questions

What is the name of the exam for which this paper is intended?

This paper is for the Combined Geo-Scientist and Geologist Examination.

Which year is this question paper from?

This is the question paper from the year 2018.

Who conducts the Geo-Scientist and Geologist Examination?

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

What is the subject of this specific paper?

This is Chemistry Paper-II.

What is the total duration allowed for this paper?

The time allowed for this paper is Three Hours.

What are the maximum marks for Chemistry Paper-II?

The maximum marks for this paper are 200.

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