KHYBER PAKHTUNKHWA, PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR THE POSTS OF PROVINCIAL MANAGEMENT SERVICES (BPS-17) 2018
CHEMISTRY PAPER – II
TIME ALLOWED: 03 HOURS MAX MARKS: 100
Note: Attempt any Five questions out of the following:
Q1 (a) What do you understand by Hybridization of Orbitals? What are the rules applied for Hybridization. Discuss the formation of Sp. Sp2 and Sp3 hybrid orbitals? (10)
(b) Compare the Valence Bond and Molecular Orbital Theories? (10)
Q2 (a) What is meant by the Order of Reaction? Describe the important methods of determining the Order of Reaction? (10)
(b) Define the term “Velocity Constant of Reaction”. Derive the Kinetic equation for the First Order reaction? What are the units of K in this case? (10)
Q3 (a) What is Catalyst and Catalysis? Give classification of Catalysis? How do Enzymes act as a Catalyst? (12)
(b) What is Catalyst Poisoning? How a Catalyst increases the rate of a chemical reaction? (08)
Q4 (a) Which kind of compounds show “Resonance” phenomenon? What are the general conditions for a compound to be aromatic? (10)
(b) Discuss in detail, How Hydrogen Bonding play a vital role in the formation of biological molecules? (10)
Q5 (a) Discuss the structure and reactivity of Carbonyl group? Give various compounds of carbonyl group? (10)
(b) Give Nucleophilic addition reactions of Allehydes and Ketones? (10)
Q6 (a) Describe the mechanism of Aromatic Electrophilic Substitution reaction. Explain Friedel Craft reaction of benzene? (10)
(b) Why Benzene is given a cyclic structure? Discuss structure of Benzene on the basis of MOT? (10)
Q7 (a) Discuss the chemistry of Azo dyes? Write a detail note on Azo dyes and human health? (10)
(b) Give synthetic applications of Arenediazonium Salts? (10)
Q8 (a) What are Lipids? Describe its classification and role in human body?
(b) Discuss fermentation process as an industrial technique for production of Antibiotics? (10)