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FPSC · CSS 2014

Chemistry, Paper II

80 marks · 3 hours · 7 questions
This paper Chemistry · all yearsQ. 2 · Define the following terms:Q. 3 · Explain the following with suitable…Q. 4 · What do you mean by…Q. 5 · Give one representative example of…Q. 6 · What are wetting agents and…Q. 7 · What approaches are followed to…Q. 8 · Draw the structures of the…With this paper← 20142015 →
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Part II

Q. 2

Define the following terms:

  1. (a)Catalytic cracking [2]
  2. (b)Catalytic reforming [2]
  3. (c)Fermentation [2]
  4. (d)Alkylation [2]
  5. (e)Antibiotics [2]
  6. (f)Plastic [2]
  7. (g)Surfactant [2]
  8. (h)Unit operation [2]
(20)
Q. 3
  1. (a)Explain the following with suitable examples.
  2. (b)Give one examples (with structure) of each of the following:
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(14)
Q. 4
  1. (a)What do you mean by Chemiluminescence? Explain with examples. [7]
  2. (b)Arrange the following functional groups in decreasing order of stability of carbocations? [5]
  3. (c)Explain the following terms:
  4. (d)How many grams of KOH are in 600 mL of 0.450 M KOH solution? [3]
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(12)
Q. 5

Give one representative example of each of the following reactions. Give complete equation and label it.

  1. (a)Witting reaction [2]
  2. (b)Oxidation of 1° and 2° alcohols [2]
  3. (c)Friedel-Crafts alkylation [2]
  4. (d)Hydration of Alkenes [2]
  5. (e)Glycol cleavage [2]
  6. (f)Ozonolysis [2]
  7. (g)Tollen's test [2]
  8. (h)Propagation reaction [2]
(20)
Q. 6
  1. (a)What are wetting agents and for what purpose they are used? [10]
  2. (b)Describe briefly the alternatives used to hydrogenation of vegetable oils for the formation vegetable Ghee. [5]
  3. (c)Give a laboratory test to differentiate between unsaturated and saturated molecules. [5]
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Q. 7
  1. (a)What approaches are followed to rule out keto-enol tautomerism. Draw the tautomerism exhibited by acetone and acetoacetic ester. [10]
  2. (b)Explain the industrial preparation of Gels? Explain their use in medicine and cosmetics? [10]
(20)
Q. 8
  1. (a)Draw the structures of the following molecules: 1. Xenon Tetrafluoride ( XeF4XeF_4 ) Central Atom Hybridization: sp3d2sp^3d^2 (Steric Number = 6; 4 bonding pairs, 2 lone pairs; VSEPR class:
  2. (b)Name the following structures according to IUPAC/common system of nomenclature: [10]
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(20)

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About this paper

The 2014 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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