Chemistry KP PMS Paper II 2013

KHYBER PAKHTUNKHWA, PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR THE POSTS OF PROVINCIAL MANAGEMENT SERVICES (BPS-17) – 2013
CHEMISTRY PAPER-II
TIME ALLOWED: 03 HOURS
MAX. MARKS: 100
NOTE: Attempt Any Five questions. All questions carry equal marks.
Q.1 A) Describe Optical and Geometrical Isomerism. Illustrate your answer with examples. (12)
B) Draw (i) Chair and Boat Conformations of Cyclohexane
(ii) Eclipsed and Staggered Conformations of Ethane (8)
Q.2 A). Discuss atleast one method of synthesis for Aldehyde and Ketone each. (14)
B) What is Haloform reaction? Discuss its mechanism. (6)
Q.3 A). Define Huckle Rule; Draw resonating Structure of phenol (6)
B). Describe Electrophilic substitution Reactions of Benzene with particular reference to i. Friedel-Crafts Acylation, Bromination and Nitration. (14)
Q.4 A). What are Carbohydrates? How are they Classified? (5)
B) Discuss different Chemical reactions of D-glucose and Specify no. of Chiral Carbons in D-glucose. (15)
Q.5 A) Define Atomic Orbitals, Molecular Orbitals and Hybridisation (6)
B) Draw the Molecular Geometry or Shape of the following Molecules.- H₂O, BF₃, BeH, NH₃ and CH₄. (14)
Q6 A). What is meant by Order of a Chemical reaction? What are the differences among Zero, First and Second Order Reaction. (10)
B) Write a Note on Catalysis (10)
Q7. A) What are Organic Polymers? Illustrate with examples (8)
B) Describe Condensation Polymerisation and Free-Radical Addition Polymerisation (12)
Q8. Write a Comprehensive note on ‘Diazonium Salts’ and their synthetic applications. (20)
*************