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FPSC · CSS 2018

Chemistry, Paper II

80 marks · 3 hours · 7 questions
This paper Chemistry · all yearsQ. 2 · Define Resonance and Resonance effect.Q. 3 · Complete the following reactions.Q. 4 · Explain electrophilic substitution reaction mechanism…Q. 5 · Distinguish between:Q. 6 · What do you mean by…Q. 7 · Explain Aldol condensation reaction with…Q. 8 · Explain the following:With this paper← 20172019 →
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Part II

Q. 2
  1. (a)Define Resonance and Resonance effect. [10]
  2. (b)Write Short note on followings. [10]
(20)
Q. 3
  1. (a)Complete the following reactions. [16]
  2. (b)1-Butyne forms a precipitate with an ammonical solution of silver nitrate where 2-Butyne does not. Why? [4]
(20)
Q. 4

Explain electrophilic substitution reaction mechanism with the help of:

  1. (i)Nitration [10]
  2. (ii)Sulphonation. [10]
(20)
Q. 5
  1. (a)Distinguish between: [12]
  2. (b)Define specific rotation. How do you measure using polarimeter? [8]
(20)
Q. 6
  1. (a)What do you mean by the setting of cement. [10]
  2. (b)Discuss future of cement industry in Pakistan. [10]
(20)
Q. 7
  1. (a)Explain Aldol condensation reaction with examples. [10]
  2. (b)What are proteins? [5]
  3. (c)Explain Bio synthesis of cholesterol. [5]
(20)
Q. 8

Explain the following:

  1. (a)Beers Lamberts Law. [4]
  2. (b)Wood Wards Fieser Rule [4]
  3. (c)Hooks Law [4]
  4. (d)Basic principle of NMR? [4]
  5. (e)Chemical Shift. [4]
(20)

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About this paper

The 2018 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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