KHYBER PAKHTUNKHWA PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR THE POSTS OF PROVINCIAL MANAGEMENT SERVICES (BPS-17)
2016
CHEMISTRY PAPER-I
TIME ALLOWED: 03 HOURS
MAX MARKS: 100
Note: ATTEMPT ANY FIVE QUESTIONS. ALL QUESTIONS CARRY EQUAL MARKS.
Q1 A State and Explain First Law of Thermodynamics. 12
B Define and explain the following terms.
a/ Enthalpy of a system b/ Entropy of a system c/ Heat capacity 8
Q2 A Describe Colligative Properties of Electrolytes. 6
B Briefly Explain Faraday’s First & Second law of Electrolysis with examples. 14
Q3 A Describe the general Characteristic Properties of Transition Elements. 8
B Making use of Valence Bond Theory and Crystal Field Theory, Explain the Mechanism of Bonding in complex ions or compounds—illustrate with eg’s 12
Q4 A State the Paulis Exclusion Principle. Would any of the following electronic configurations violate this rule i) 1s³ ii) 1s² 2p⁷ iii) 1s⁴—explain who, 8
B What is a quantum number? How many quantum numbers are required to specify a single atomic orbital? What are they? 12
Q5 A Explain basic metallurgical processes or steps that are generally required for extraction of metal from its ore, and converting the metal to a useful form. 12
B Briefly describe the Extraction method of Copper. 8
Q6 Write a note on Air-Pollution (20)
Q7 A Name common oxide and oxy acids of sulphur; Draw the electronic structure of H2SO4, SO3, N2O4, NO2, N2O 10
B Describe the Preparation of HNO3 10
Q8 What are the basic Raw Materials used for
1 Ceramic and 2 glass Industry? Describe the type and Characteristics of these raw materials. (20)
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