KHYBER PAKHTOON KHWA PUBLIC SERVICE COMMISSION PESHAWAR
Subject: Competitive Examination
for the Posts of Provincial Management Service (BPS-17) 2010
CHEMISTRY PAPER I
Time Allowed: 03 hours Max. Marks: 100
Note. Attempt any five questions. All questions carry equal marks
Q1. A) Describe the Concept of Quantum Theory of Radiation. What properties of radiations does it explain? 15
B) What is the difference between structures of H-atom, H-molecule and H-molecule ion? 05
Q2. A) State the 2nd Law of Thermodynamics. How is it related to Entropy? Explain with the help of Equations. 14
B) Explain the terms: i) Intensive Properties i) Extensive Properties iii) State 06
Q3. A) What is Electrolysis? Describe Faraday’s Laws Electrolysis and explain with examples. Also give significance of these Laws 15
B) How measurement of pH made? 05
Q4. A) What is the group No and Atomic No. of Nitrogen? What is its importance in Air? 04
B) Name typical Oxy-acids of Nitrogen Describe the preparation, structure and important chemical reactions of Nitric Acid. 16
Q5. A) Name important ores of aluminum. Describe methods of preparation and purification of Aluminum 14
B) What Semi-conductivity device? Discuss basic design of n-type and p-type Semi-conductivity devices 06
Q6. How the structures of Coordination Compounds are explained on the basis of Molecular Orbital Theory? The Explain with respect to [Co(NH3)6]3+ and (Co(F)6]3+. Which one paramagnetic ? 20
Q7. A) What are water borne diseases? What remedial measures should be taken to minimize the risk of these diseases? 14
B) Describe types of water hardness. Give names of compounds that are responsible for these types. 06