UPSC Civil Services Main 2023 Chemistry Paper II PDF

Central Government Jobs Administrative / Civil Services 2023

  • Year 2023
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages Hindi & English

Exam Details

Detail Information
Examination Civil Services (Main) Examination
Year 2023
Conducting Body UPSC
Paper Chemistry (Paper II)
Subject Chemistry
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Mixed

This is the official question paper for the Civil Services (Main) Examination 2023, specifically for Chemistry Paper II. Conducted by UPSC, this paper is designed to assess candidates' in-depth knowledge of chemistry. It allows a time duration of three hours and carries a maximum of 250 marks. The paper is bilingual, featuring questions in both Hindi and English, and consists of eight questions divided into two sections. Candidates are required to answer five questions in total, with compulsory questions and a requirement to choose at least one from each section. This paper is crucial for aspirants aiming for administrative roles through the UPSC Civil Services exam.

Major Topics Covered

  • Chemistry
  • Physical Chemistry
  • Organic Chemistry
  • Chemical Kinetics
  • Stereochemistry
  • Reaction Mechanisms
  • Solvent Effects

Why This Paper is Important

  • Useful for CIVIL SERVICES (MAIN) EXAMINATION 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 Civil Services Main 2023 Chemistry Paper I
  • UPSC Civil Services Main 2023 General Studies Paper I
  • UPSC Civil Services Main 2023 Essay Paper
  • UPSC Civil Services Main 2023 Chemistry Paper II Answer Key
  • UPSC Civil Services Main Chemistry Syllabus
  • UPSC CSE Main Exam Syllabus
  • UPSC Civil Services Main Exam Pattern
  • CSE Main Exam Structure

Instructions

  • पुस्तिका के मुखपृष्ठ पर अंकित निर्दिष्ट स्थान पर किया जाना चाहिए ।
  • प्राधिकृत माध्यम के अतिरिक्त अन्य किसी माध्यम में लिखे गए उत्तर पर कोई अंक नहीं मिलेंगे ।
  • जहाँ आवश्यक हो, निर्देशांक आरेखों को प्रश्न का उत्तर देने के लिए दिए गए स्थान में ही बनाना है ।
  • जब तक उल्लिखित न हो, संकेत तथा शब्दावली प्रचलित मानक अर्थों में प्रयुक्त हैं।
  • यदि आवश्यक हो, तो उपयुक्त आँकड़ों का चयन कीजिए तथा उनको निर्दिष्ट कीजिए ।
  • प्रश्नों के उत्तरों 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 पूर्णत: 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.
  • Question Nos. 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.
  • Coordinate diagrams, wherever required, 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 considered 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 Booklet must be clearly struck off.

Questions (page 2)

Section A

Q1.

(a) साइक्लोपेन्टाडाइन का pKa मान लगभग पानी के समान है। व्याख्या कीजिए। pKₐ value of cyclopentadiene is almost similar to water. Explain.

(a) साइक्लोपेन्टाडाइन का pKa मान लगभग पानी के समान है। व्याख्या कीजिए। pKₐ value of cyclopentadiene is almost similar to water. Explain.

(b) (i) निम्नलिखित यौगिक की त्रिविम रसायन निर्दिष्ट करते हुए IUPAC नाम लिखिए । Write the IUPAC nomenclature of the above compound by assigning the stereochemistry.

(b) (ii) निम्नलिखित मूलकों को उनके द्वितयन क्षमता के आरोही क्रम में व्यवस्थित करें। Arrange the above radicals in ascending order of their dimerisation ability.

(c) सोडियम एजाइड की मेथिल आयोडाइड के साथ अभिक्रिया मेथनॉल की तुलना में डीएमएफ (DMF) में द्रुत होती है। व्याख्या कीजिए। The reaction of methyl iodide with sodium azide is faster in N,N-dimethyl formamide (DMF) than in methanol. Explain.

Question paper preview

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

Page 1
UPSC Civil Services Main 2023 Chemistry Paper II question paper page 1 scan PDF download, showing exam header and instructions in Hindi and English.
Page 2
UPSC Civil Services Main 2023 Chemistry Paper II question paper page 1 scan PDF download, showing exam header and instructions in Hindi and English.

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Frequently asked questions

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

This question paper is from the Civil Services (Main) Examination.

Which paper is this question paper?

This is Chemistry Paper II.

What is the conducting body for this examination?

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

In which year was this examination held?

The examination was held in 2023.

What is the maximum marks for Chemistry Paper II?

The maximum marks for Chemistry Paper II is 250.

What is the time duration allowed for this paper?

The time allowed for Chemistry Paper II is Three Hours.

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