UPSC Civil Services Main 2019 Chemistry Paper II PDF

Central Government Jobs Other Jobs 2019

  • Year 2019
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages Hindi & English

Exam Details

Detail Information
Examination UPSC Civil Services Main Examination
Year 2019
Conducting Body UPSC
Paper Chemistry Paper - II
Subject Chemistry
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Descriptive / Subjective

This is the official question paper for the UPSC Civil Services Main Examination 2019, Chemistry Paper II. The paper is designed to assess candidates' in-depth knowledge of Chemistry. It consists of 8 questions divided into two sections, with candidates required to answer five questions in total, including compulsory questions 1 and 5. The exam allows three hours to complete and carries a maximum of 250 marks. This paper is crucial for aspirants aiming to secure a position in the Civil Services, providing a clear understanding of the examination's scope and difficulty.

Major Topics Covered

  • Chemistry
  • Organic Chemistry
  • Physical Chemistry
  • Inorganic Chemistry

Why This Paper is Important

  • Useful for UPSC 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 2019 Chemistry Paper I
  • UPSC Civil Services Main 2019 General Studies Paper I
  • UPSC Civil Services Main 2019 General Studies Paper II
  • UPSC Civil Services Main 2019 General Studies Paper III
  • UPSC Civil Services Main 2019 General Studies Paper IV
  • UPSC Civil Services Main 2019 Chemistry Paper II Answer Key
  • UPSC Civil Services Main Chemistry Syllabus
  • UPSC Mains Exam Pattern

Instructions

  • इसमें आठ प्रश्न हैं जो दो खण्डों में विभाजित हैं तथा हिन्दी एवं अंग्रेजी दोनों में छपे हैं।
  • उम्मीदवार को कुल पाँच प्रश्नों के उत्तर देने हैं।
  • प्रश्न संख्या 1 और 5 अनिवार्य हैं तथा बाकी प्रश्नों में से प्रत्येक खण्ड से कम-से-कम एक प्रश्न चुनकर तीन प्रश्नों के उत्तर दीजिए।
  • प्रत्येक प्रश्न/भाग के लिए नियत अंक उसके सामने दिए गए हैं।
  • प्रश्नों के उत्तर उसी प्राधिकृत माध्यम में लिखे जाने चाहिए, जिसका उल्लेख आपके प्रवेश-पत्र में किया गया है, और इस माध्यम का स्पष्ट उल्लेख प्रश्न-सह-उत्तर (क्यू० सी० ए०) 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 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.
  • 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) हकल नियम के अनुसार क्या [14] ऐन्यूलीन ऐरोमैटिक है? अपने उत्तर को उचित सिद्ध कीजिए।
Is [14] annulene aromatic according to Hückel rule? Justify your answer.

(b) 1,2-डाइक्लोरोबेंजीन तथा 1,3-डाइक्लोरोबेंजीन, KNH2 के साथ उपचार किए जाने पर एक ही उत्पाद बनाते हैं। इसका कारण बताइए।
1,2-dichlorobenzene and 1,3-dichlorobenzene upon treatment with KNH2 give the same product. Account for this.

(c) निओपेन्टिल टॉसिलेट का विलायक अपघटन करने से 2-मेथिलब्यूटेन-2-ऑल बनता है। इसके विरचन की क्रियाविधि का उल्लेख कीजिए।
Neopentyl tosylate on solvolysis gives 2-methylbutan-2-ol. Write the mechanism of its formation.

(d) निम्न अभिक्रियाओं में बनने वाले उत्पाद (X) को पहचानिए तथा सम्बद्ध अभिक्रिया का नाम लिखिए :
Identify the product (X) in the following reactions and write the name of the reaction involved :
(i)
(ii)
<image>
mCPBA
(1) CH3COCl
(2) P2O5
(3) Pd/C
100 °C
(X)
(X)

(e) निम्न अभिक्रिया का उत्पाद लिखिए तथा उत्पाद के त्रिविमरसायन की विवेचना कीजिए:
Write the product of the following reaction and comment on the stereochemistry of the product :
<image>
240 °C

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Frequently asked questions

What is the name of the exam?

The exam is the UPSC Civil Services Main Examination.

What is the year of this question paper?

This question paper is from the year 2019.

Which paper is this?

This is Chemistry Paper - II.

Who conducts the Civil Services Examination?

The Union Public Service Commission (UPSC) conducts the Civil Services Examination.

What is the maximum marks for this paper?

The maximum marks for Chemistry Paper - II is 250.

What is the time allowed for this paper?

The time allowed for this paper is Three Hours.

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