KHYBER PAKHTUNKHWA, PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR THE POSTS OF
PROVINCIAL MANAGEMENT SERVICES (BPS-17)
CHEMISTRY PAPER-I 2013
TIME ALLOWED: 03 HOURS MAX:MARKS: 100
Note: Attempt any Five questions. All questions carry equal marks.
Q.1 A) Explain Schrodinger wave equation and its graphical representation? 15
B) Describe postulates of Bohr Theory of Hydrogen atom? 05
Q.2 A) Explain Standard enthalpies of formation and Hess’s Law? 14
B) What do you know about Born Haber cycle? 06
Q.3 A) Explain Debye-Huckel theory, by using this theory define activity coefficients, Galvanic cells and Fuel cell? 15
B) Write difference between strong and weak Electrolytes and its effect on cell? 05
Q.4 A) What is the role of Carbon in organism and industry? 06
B) Describe manufacturing of Nitric Acid in laboratory and industry? 14
Q5. A) Describe method of preparation and purification of Iron ores? 14
B) Name types of Fertilizer? Explain Phosphorus Fertilizer with its uses? 06
Q6. A) How the structures of Coordination Composed are explained on the basis of Molecular Orbital Theory? Explain the strong and weak field Ligands with examples? 20
Q.7 A) What is air pollution and most common diseases related to Air Pollution 14
B) Which factors are responsible for Air pollution, how we can overcome its harmful effects? 06
Q.8 A) Describe in your words about Fixation of Nitrogen. 10
B) Write down different types of Water hardness Give names of compounds that are responsible for these types. (10)