Indian Forest Service (Main) 2017 Chemistry Paper II PDF

Central Government Jobs Other Jobs 2017

  • Year 2017
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Indian Forest Service (Main) Examination
Year 2017
Conducting Body UPSC
Paper Chemistry Paper II
Subject Chemistry
Duration Three Hours
Maximum Marks 200
Number of Questions 8
Question Type Mixed

This is the official question paper for the Indian Forest Service (Main) Examination 2017, specifically for Chemistry Paper II. Conducted by UPSC, this paper carries a maximum of 200 marks and is to be completed within three hours. It comprises eight questions, of which candidates must attempt five, including compulsory questions 1 and 5. The paper is divided into two sections, A and B, requiring candidates to select at least one question from each. This paper is crucial for aspirants aiming to qualify for the Indian Forest Service, providing insights into the expected difficulty level and subject coverage.

Major Topics Covered

  • Sandwich compounds
  • Aromaticity
  • Sydnones
  • Norrish Type-II cleavage
  • Reaction mechanisms
  • Organic synthesis
  • Elimination reactions
  • Carbene reactivity
  • Hydrolysis kinetics

Why This Paper is Important

  • Useful for Indian Forest Service (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

  • Indian Forest Service (Main) Examination 2017 Chemistry Paper I
  • Indian Forest Service (Main) Examination 2017 General Studies Paper I
  • Indian Forest Service (Main) Examination 2017 General Studies Paper II
  • Indian Forest Service (Main) Examination 2017 Chemistry Paper II Answer Key
  • Indian Forest Service (Main) Examination Chemistry Syllabus
  • UPSC Main Exam Syllabus
  • Indian Forest Service (Main) Examination Pattern
  • UPSC Exam Pattern

Instructions

  • There are EIGHT questions in all, out of which FIVE are to be attempted.
  • Out of the remaining SIX questions, THREE are to be attempted selecting at least ONE question from each of the two Sections A and B.
  • 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.
  • The number of marks carried by a question/part is indicated against it.
  • Answers must be written in ENGLISH only.
  • Unless otherwise mentioned, symbols and notations have their usual standard meanings.
  • Assume suitable data, if necessary and indicate the same clearly.
  • Neat sketches may be drawn, wherever required. Ĩ

Questions (page 2)

Section A

Q1. Answer the following:

(a) What are sydnones? Draw a representative structure.

(b) With a suitable example show 'Norrish Type-II' cleavage reaction.

(c) Show the mechanism for the following reaction:
2H3C-C-CH3 xrightarrow{HCl} H3C-C-CH=C-CH3 + H2O || || O O CH3

(d) Mention the product in the given reaction:
CH3CH2CH2 - C - H + BrCH2CO2CH2CH3 xrightarrow{ ext{(i) Zn}} ext{(ii) } H2O^*

(e) Also provide mechanism of the above reaction. How 2,3-dimethyl-2,3-butanediol can be converted to 3,3-dimethyl-2-butanone? Suggest the mechanism of the involved reaction.

(f) Identify A and B.
C=C xrightarrow{OsO4} A xrightarrow{ ext{Aqueous ethanolic } NaHSO3 ext{ solution}} B + (HO)_2OsO_2

(g) Explain why di-t-butoxycarbene is unreactive.

(h) The rate of hydrolysis of (CH3)_3CBr in 50% aqueous methanol is thousand times faster than that in pure methanol - explain.

Section A

Q2.

(a) (i) Mention the product(s) in the following reaction. Elucidate your answer. CH2-CH2
|| O-C-SMe xrightarrow{heat} ? S
(ii) Mention the product(s) in the following reaction.

(b) Write down the names and the structures of the predominant products for the following elimination reactions :
(i) CH3 cdot CH2 - CHCH3 xrightarrow{EtO^{circ}} ? | Br
(ii) CH3CH2CHCH3 xrightarrow{EtO^{circ}} ? | oplus NMe3

Question paper preview

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Indian Forest Service Main 2017 Chemistry Paper II question paper page 1 instructions scan PDF download UPSC
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Indian Forest Service Main 2017 Chemistry Paper II question paper page 1 instructions scan PDF download UPSC

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Frequently asked questions

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

This question paper is for the Indian Forest Service (Main) Examination.

What is the year of this examination paper?

The examination year is 2017.

Which body conducts the Indian Forest Service Examination?

The Indian Forest Service Examination is conducted by UPSC (Union Public Service Commission).

What is the subject and paper name for this question paper?

The subject is Chemistry, and the paper name is Chemistry Paper II.

What is the maximum marks for Chemistry Paper II?

The maximum marks for Chemistry Paper II is 200.

What is the time duration allowed for this paper?

The time allowed for Chemistry Paper II is Three Hours.

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