PUNJAB PUBLIC SERVICE COMMISSION
COMBINED COMPETITIVE EXAMINATION FOR
RECRUITMENT TO THE POSTS OF
PROVINCIAL MANAGEMENT SERVICE, ETC. – 2015

SUBJECT: CHEMISTRY (PAPER-I)

TIME ALLOWED: THREE HOURS
MAXIMUM MARKS: 100

Note: Attempt any FIVE questions.All questions carry equal marks.

Q.1. Explain the DEBYE HUCKLE Theory of inter-ionic attraction while keeping in the mind the criticisms of Arhinius Theory of Electrolytic Dissociation.
b). Name the factors on which electrolytic conductance depends.

Q.2. a). Describe Gibbs-Helmholtz free energy equation and give its applications.
b). Calculate the Entropy change of an Ideal gas in terms of temperature and volume.

Q.3. Describe the IUPAC System for naming the Transition Metal Compounds with the help of examples at each step.

Q.4. a). Describe the various types of Orbital Hybridizations. How VSEPR Theory is applied for predicting the shapes of Molecules.
b). What is the electrode potential? Describe Measurement of electrode potential.

Q.5.a ) . What are the quantum potential? State their Signifinace .
b). Write note on the degeneracy and tunnel effect.

Q.6. a). Describe the manufacture of urea from Ammonia and carbon dioxide as gaseous raw material with the help of flow sheet diagram.
b). Discuss merits of constact process over LEAD CHAMBER process for manufacture of sulfuric acid.

Q.7. a). What is Schrodinger’s wave equation? Explain the significance of ᴪ and ᴪ2
b). Derive an expression for decay constant for disintegration of a radioactive substance.