UPSC Civil Services Main 2022 Chemistry Paper II PDF

Central Government Jobs Other Jobs 2022

  • Year 2022
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages English & Hindi

Exam Details

Detail Information
Examination CIVIL SERVICES (MAIN) EXAM
Year 2022
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 2022, Paper II, conducted by UPSC. The paper is in Chemistry and has a maximum mark of 250, with a time limit of three hours. It consists of eight questions divided into two sections, with questions presented in both Hindi and English. Candidates are required to answer five questions, including compulsory questions 1 and 5, and at least one from each section. This paper is crucial for aspirants aiming to secure a position in the Civil Services, providing a direct look at the types of questions and the depth of knowledge assessed.

Major Topics Covered

  • Organic Chemistry
  • Reaction Mechanisms
  • Aromaticity
  • Chemical Intermediates

Why This Paper is Important

  • Useful for CIVIL SERVICES (MAIN) EXAM 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) Exam 2022 Chemistry (Paper-I)
  • UPSC Civil Services (Main) Exam 2021 Chemistry (Paper-II)
  • UPSC Civil Services (Main) Exam 2022 General Studies (Paper-I)
  • UPSC Civil Services Main 2022 Chemistry Paper II Answer Key
  • UPSC Civil Services Main Chemistry Syllabus
  • UPSC Mains Optional Subject Syllabus
  • UPSC Civil Services Main Exam Pattern
  • UPSC Mains Optional Subject Exam Pattern

Instructions

  • इसमें आठ प्रश्न हैं जो दो खण्डों में विभाजित हैं तथा हिन्दी और अंग्रेजी दोनों में छपे हुए हैं।
  • परीक्षार्थी 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 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 प्रयासों 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) 3,4-डाइक्लोरो-1,2,3,4-टेट्रामेथिलसाइक्लोब्यूटीन का आयनन SbF5-SO2 में -75 °C में होने पर एक प्रकार का प्रतिक्रिया मध्यवर्ती बनता है। इस मध्यवर्ती का अनुमान लगाइए और इसकी स्थिरता तथा ऐरोमैटिकता पर टिप्पणी कीजिए।
Ionization of 3,4-dichloro-1,2,3,4-tetramethylcyclobutene in SbF5-SO2 at -75 °C produces a reaction intermediate of its own kind. Predict the intermediate and comment on its stability and aromaticity.

(b) X और Y की संरचना का अनुमान लगाइए तथा मुख्य उत्पाद का भी उल्लेख कीजिए:
Predict the structures of X and Y, and also mention the major product :
MeO
-
/
MeOH → X + Y

(c) निम्नलिखित अभिक्रियकों की सूची, जो अभिकर्मकों के साथ है, में वह अभिक्रिया पहचानिए जो संघनन अभिक्रिया नहीं है। इस अभिक्रिया में उत्पादों के बनने की उपयुक्त क्रियाविधि प्रस्तावित कीजिए:
(i) ऐसीटैल्डिहाइड की तनु KOH से अभिक्रिया
(ii) बेन्जैल्डिहाइड की ऐसीटिक ऐनुहाइड्राइड के साथ सोडियम ऐसीटेट की उपस्थिति में अभिक्रिया
(iii) बेन्जैल्डिहाइड की मैलोनिक एस्टर के साथ क्षार की उपस्थिति में अभिक्रिया
(iv) बेन्जैल्डिहाइड की सांद्रित KOH के साथ अभिक्रिया
Out of the following list of reactants along with the reagents, identify the reaction which is not a condensation reaction. Propose a suitable mechanism for the products formed in this reaction :
(i) Acetaldehyde is reacted with dilute KOH
(ii) Benzaldehyde is reacted with acetic anhydride in presence of sodium acetate
(iii) Benzaldehyde is reacted with malonic ester in presence of a base
(iv) Benzaldehyde is reacted with concentrated KOH

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Frequently asked questions

What is the name of the exam?

The exam is the CIVIL SERVICES (MAIN) EXAM.

Which year is this question paper for?

This question paper is for the 2022 examination.

Who conducts the Civil Services Main Exam?

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

What is the subject of this paper?

This paper is for Chemistry, specifically Paper-II.

What is the maximum marks for this paper?

The maximum marks for Chemistry Paper-II is 250.

What is the time allowed to complete the paper?

The time allowed is Three Hours.

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