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FPSC · CSS 2017

Chemistry, Paper II

100 marks · 3 hours · 7 questions
This paper Chemistry · all yearsQ. 2 · Write brief notes on the…Q. 3 · Give the method of synthesis…Q. 4 · What is aromaticity? Explain the…Q. 5 · What is Grignard reagent? What…Q. 6 · What is stereoisomerism? Give an…Q. 7 · What is the difference between…Q. 8 · Write notes on any FOUR…With this paper← 20172018 →
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Part II

Q. 2

Write brief notes on the following:

  1. (i)Covalent Bond [2]
  2. (ii)Hybridization [2]
  3. (iii)Isomerism [2]
  4. (iv)Monosaccharides [2]
  5. (v)Triglycerides [2]
  6. (vi)Electronegativity [2]
  7. (vii)The Inductive Effect [2]
  8. (viii)Chemical Shift [2]
  9. (ix)Stereoselectivity [2]
  10. (x)Fertilizers [2]
(20)
Q. 3
  1. (a)Give the method of synthesis of the following compounds from an appropriate alkene of your choice with reagents: [See chemical structures in PDF for i to vi] [12]
  2. (b)Write the Major product for these Reactions: [See chemical reaction equations for 1, 2, 3 in PDF] [8]
(20)
Q. 4
  1. (a)What is aromaticity? Explain the Hückel criteria for aromaticity. [6]
  2. (b)Write names of the following compounds: [See chemical structures A, B, C, D in PDF] [4]
  3. (c)Write the reaction and mechanism of Friedel Craft alkylation and acylation reaction. [10]
(20)
Q. 5
  1. (a)What is Grignard reagent? What are its applications? How would you prepare Grignard reagent starting from an alkyl halide of your choice. [8]
  2. (b)Give the Product of the following reactions: [See reaction schemes in PDF] [3]
  3. (c)Give the IUPAC nomenclature of Aldehydes and Ketones. [4]
  4. (d)Give the major products of the following reactions: [See reaction schemes in PDF] [5]
(20)
Q. 6
  1. (a)What is stereoisomerism? Give an account of different types of stereoisomerism. [5]
  2. (b)Assign an R or S configuration to the chiral center in each molecule: [See structures I-VI in PDF] [9]
  3. (c)In the following molecules identify that which are diastereomers and which are enantiomers? [See structures I-IV in PDF] [6]
(20)
Q. 7
  1. (a)What is the difference between Dispersive IR Spectrometer and Fourier Transform (FT)-IR Spectrometer. [5]
  2. (b)Differentiate the following on the basis of IR: [See chemical structures A, B, C in PDF] [3]
  3. (c)Differentiate the following pairs of compounds on the basis of UV: [See chemical structures A, B, C in PDF] [8]
  4. (d)Deduce the structure of the product of the given reaction from the following data: [See reaction equation and spectral data in PDF] [4]
(20)
Q. 8

Write notes on any FOUR of the following:

  1. (a)Reactions of Monosaccharides [5]
  2. (b)Biosynthesis of Cholesterol [5]
  3. (c)Primary structure of Polypeptides and Protein. [5]
  4. (d)Prostaglandins [5]
  5. (e)Synthesis of Peptides [5]
(20)

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The 2017 CSS Chemistry paper set by the FPSC. Question wording only; questions marked “Not yet checked” have not been compared with the official paper yet.

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