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FPSC · CSS 2020

Chemistry, Paper I

100 marks · 3 hours · 7 questions
This paper Chemistry · all yearsQ. 2 · Write two equations of state…Q. 3 · Explain the Kohlrausch law. Why…Q. 4 · Explain the Arrhenius equation. Also…Q. 5 · Make a comparison of column…Q. 6 · Give a comprehensive classification of…Q. 7 · Explain crystal Field Theory (CFT)…Q. 8 · Write short notes on the…With this paper← 20192020 →
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Part II

Q. 2
  1. (a)Write two equations of state for real gases and compare them high lighting their important features. [10]
  2. (b)Explain Heisenberg's uncertainty principle. [5]
  3. (c)Discuss Born's interpretation of wave function. [5]
(10)
Q. 3
  1. (a)Explain the Kohlrausch law. Why do the real solution should deviate from the law? [10]
  2. (b)Compare Langmuir's and Freundlich's adsorption isotherms. [10]
(20)
Q. 4
  1. (a)Explain the Arrhenius equation. Also high light its applications and limitations. [10]
  2. (b)Explain various acid-base theories. What are hard and soft acids and bases? [10]
(20)
Q. 5
  1. (a)Make a comparison of column chromatography and thin layer chromatography (TLC) by highlighting merits and demerits of the both. [10]
  2. (b)Explain Werner's theory of coordination complexes. Give examples from d-block transition metals. [10]
(20)
Q. 6
  1. (a)Give a comprehensive classification of various chromatographic techniques. Also mention potential application of each. [10]
  2. (b)What is Hydrogen bonding. Explain. [5]
  3. (c)Describe Hybidization in p-block elements. [5]
(20)
Q. 7
  1. (a)Explain crystal Field Theory (CFT) for d-block elements. [10]
  2. (b)Write an extensive essay on types of chemical bonding giving examples. [10]
(20)
Q. 8

Write short notes on the following:

  1. (i)Liquid junction potential [5]
  2. (ii)Potentiometry [5]
  3. (iii)Collision theory of Chemical reactions. [5]
  4. (iv)Transition state theory. [5]
(20)

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About this paper

The 2020 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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