Chemistry
- Year 2024
- Conducted By Central Government (UPSC) / Civil Services Main
- Questions 8
- Maximum Marks 250
- Duration Three Hours Maximum Marks: 250 Question Paper Specific Instructions (please Read Each Of The Following Instructions Carefully Before Attempting Questions) 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. Phkm-b-chm/25 1
- Languages Hindi & English
Exam Details
| Detail | Information |
|---|---|
| Examination | Civil Services Main Examination |
| Year | 2024 |
| Conducting Body | Central Government (UPSC) / Civil Services Main |
| Paper | Chemistry |
| Subject | Chemistry |
| Duration | Three Hours Maximum Marks: 250 Question Paper Specific Instructions (please Read Each Of The Following Instructions Carefully Before Attempting Questions) 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. Phkm-b-chm/25 1 |
| Maximum Marks | 250 |
| Number of Questions | 8 |
Page 1 provides the exam header for Chemistry Paper II of the Civil Services Main 2024, including time (Three Hours), maximum marks (250), languages (Hindi & English), and instructions. Page 2 contains repaired OCR for objective questions focusing on aromaticity (aromatic, nonaromatic, antiaromatic) with five substrates, plus prompts about a keto-containing compound not undergoing nucleophilic addition, and a request to identify the intermediate in a reaction and provide experimental proof. The combined pages cover exam structure, compulsory questions, number of questions to attempt, and guidance for answering in the authorized medium with diagrams where needed.
Major Topics Covered
- Chemistry
- Physical Chemistry
- Aromaticity
- Hückel's rule
- Aromatic compounds
- Nonaromatic
- Antiaromatic
- Cyclooctatetraene
- Azulene
- Pyridine
- Sydnone
- Cyclopentadienyl cation
- Keto group reactivity
- Nucleophilic addition
- Reaction intermediates
- Experimental proof
- Mechanisms
- Two-section paper
- QCA format
- Exam instructions
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
- Chemistry Paper I 2024
- Chemistry Paper II 2023
- Chemistry Paper II 2022
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 स्पष्टतया 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 पर्णतः 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)
Q1. 1. A / SECTION- खण्ड- निम्नलिखित का ऐरोमैटिक, नॉन-ऐरोमैटिक या ऐन्टी-ऐरोमैटिक में वर्गीकरण कीजिए :
Q2. 2. (b) निम्नलिखित अभिक्रिया के समय बनने वाला मध्यवर्ती क्या है? \beginpicture(120,110) \put(0,0){\line(1,0)10} \put(15,0){\line(1,0)10} ... (मेध्यवर्ती के बनने के लिए किसी एक प्रायोगिक प्रमाण की व्याख्या कीजिए।) What is the intermediate formed during the following reaction? NH2 \bigodot \bigodot \bigodot \bigodot ...
Q3. 3. What is the intermediate formed during the following reaction? NH2 \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigodot \bigod
Q4. 4. Explain any one experimental proof for the formation of the intermediate.
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Frequently asked questions
What is the exam name and level?
Civil Services Main Examination, Chemistry Paper II (2024).
How many questions are in Chemistry Paper II?
There are eight questions divided into two sections.
Which questions are compulsory?
Questions 1 and 5 are compulsory.
How many questions must a candidate attempt?
Five questions in total.
In what languages are the questions printed?
Questions are printed in Hindi and English.
Where should answers be written?
In the medium authorized in the Admission Certificate, stated on the QCA booklet cover.