UPSC Combined Geo-Scientist 2020 Chemistry Paper II PDF

Central Government Jobs Other Jobs 2020

  • Year 2020
  • Conducted By UPSC
  • Languages English

Exam Details

Detail Information
Examination Combined Geo-Scientist (Preliminary) Examination
Year 2020
Conducting Body UPSC
Paper Paper-II Chemistry
Subject Chemistry
Question Type Objective (MCQ)

This document contains the UPSC Combined Geo-Scientist (Preliminary) Examination 2020, Paper II, focusing on Chemistry. It includes objective-type questions designed to assess candidates' understanding of core chemistry concepts relevant to the geo-scientist role. Aspirants can use this paper to understand the exam's difficulty level, question format, and the range of topics tested. Analyzing previous years' papers like this one is crucial for effective preparation and strategy development for the Combined Geo-Scientist exam.

Major Topics Covered

  • Atomic Structure
  • Electronic Configuration
  • Periodic Properties
  • Oxides Acidity
  • Electronic Configuration of Elements
  • Actinoid Metals
  • Ionic Radius
  • Ionization Potential
  • Magnetism of Complexes
  • Alkali Metal Halides Solubility

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

  • UPSC Combined Geo-Scientist 2021 Chemistry Paper II
  • UPSC Combined Geo-Scientist 2019 Chemistry Paper II
  • UPSC Geo-Scientist Paper I 2020
  • UPSC Combined Geo-Scientist 2020 Chemistry Paper II Answer Key
  • UPSC Combined Geo-Scientist Chemistry Syllabus
  • UPSC Geo-Scientist Exam Pattern
  • UPSC Combined Geo-Scientist Exam Pattern
  • UPSC Geo-Scientist Preliminary Exam Pattern

Instructions

  • Consider the following statements regarding radial and total angular function of H-atom:
  • The radial function R(r) depends on the quantum number n and l
  • The total angular function depends only on the direction and is independent of the distance from the nucleus (r) Which of the statements given above is/are correct?

Questions (page 2)

Q6. Which one of the following statements regarding actinoid metals is NOT correct?

  • (a) The actinoid metals are usually silvery in appearance
  • (b) Ionization enthalpies of the early actinoids are higher than that of the early lanthanoids
  • (c) The actinoids are highly reactive metals
  • (d) The actinoid metals in general show +3 oxidation state

Q7. Which one of the following is the correct order of ionic radius?

  • (a) F^- > O^{2-} > Na^+
  • (b) Na^+ > F^- > O^{2-}
  • (c) H^- > H > H^+
  • (d) Al^{3+} > Mg^{2+} > N^{3-}

Q8. Which one among the following elements has the highest second ionization potential?

  • (a) B
  • (b) Be
  • (c) Mg
  • (d) Al

Q9. Consider the following statements regarding magnetism of two complexes:

  • (1) [CoF6]^{3-} is a paramagnetic and high spin complex
  • (2) [Co(NH3)_6]^{3+} is a diamagnetic and low spin complex
  • (a) 1 only
  • (b) 2 only
  • (c) Both 1 and 2
  • (d) Neither 1 nor 2

Q10. Consider the following statements in respect of alkali metal halides:

  • (1) The low solubility of LiF in water is due to its high lattice enthalpy
  • (2) The low solubility of CsI in water is due to smaller hydration enthalpy of its two ions
  • (a) 1 only
  • (b) 2 only
  • (c) Both 1 and 2
  • (d) Neither 1 nor 2

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Frequently asked questions

What is the name of the exam?

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

Which year is this question paper from?

This question paper is from the year 2020.

Which paper is this?

This is Paper-II, which covers Chemistry.

Who conducts the Combined Geo-Scientist Examination?

The Union Public Service Commission (UPSC) conducts the Combined Geo-Scientist Examination.

What is the question type for this paper?

The questions in this paper are of the objective (MCQ) type.

What is the subject covered in Paper II?

Paper II of the Combined Geo-Scientist (Preliminary) Examination covers Chemistry.

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