Punjab Public Services Commission
Combined Competitive Examination for the post of recruitment of provisional management Services ETC-2015
Subject: Chemistry Paper -1
Time:3 Hours Marks 100
Note: Attempt Any Five Questions All have equal Marks
QNO 01 (a)
Explain the DEBYE Huckle theory of Inter-ionic attraction while keeping in mind criticisms the Arhenius of electrolytic dissociation.
(b)
Name the factors on which electrolytic conductance depends.
QNO 02
(a)
Describe the Gibbs Helmholtz free energy equations and also explain its applications.
(b)
Calculate the entropy change of an Ideal gass in the term of temperature and volume.
QNO 03
Describe the IUPAC system for naming the transition metal compound with the help of example at each step.
QNO 04
(a)
Describe the various types of orbital hybridization. How VESPR theory is applied for predicting the shapes of molecule.
(b)
What is the electrode potential and give the measurements of electrode potential?
QNO 05
(a) What is the quantum potential and stats it's significance?
(b)
Write a note on degeneracy and tunnel effects.
QNO 06
(a) Write a note on manufacturing of Urea from Ammonia and calcium dioxide as gasseus raw material with the help of flow sheet diagram.
(b)
Discuss merit of contact process over lead chamber processes for the manufacturing of sulphuric acid.
QNO 07
(a) Describe the Sachrodinger wave equations and states the significance of ¥ and ¥2.
(b) What is radioactive substance and derive its expression for decay constant for disintegrating .
(b) What is radioactive substance and derive its expression for decay constant for disintegrating .
Chemistry paper -2
PMS ECT -2015
Attempt Any Five Questions
QNO 01
(a) Explain the term Inductive effect and discus its role for the reactivity of organic compound.
(b)
Explain the following
1:Why a molecule having planr symmetry does not show optical activity.
2:What is Huckle rule for the aromaticity.
3:Why phenol show acid behaviour
4:What is importance of finger print region in IR-spectrum.
5: What is oppenauer oxidation.
QNO 02
(a) Describe acid and base catalyzed aldol condensation reaction for corbonyle compound.
(b)
Explain the following
1:Resonance effect
2: Orientation in substituted naphthalene
QNO 03
(a) What is conformational isomerism. Discuss conformational isomerism analyses of cyclohexane.
(b) Discribe any four method of resolution of racemic mixture.
QNO 04
(a) Discuss different type of molecular transition which are brought about by the absorption of
1: UV Radiation
2: IR Radiation
(b)
Define following terms
1: Bathochromic shift
2: Hypochromic shift
3: Lambert law of absorption
4: Overtons
5: Fermi resolution
QNO 05
(a) What is thin layer chromatography. Why it is advisable to apply TLC to a mixture before proceeding for Coloumn chromatography.
(b)
Explain the following terms
1:Gardient elution
2:Absorption and partition chromatography
3:Condensation polymerization
4:Mordenting in dying process
5: Retention factors
QNO 06
(a) What is liquid crystals. Discuss its types and applications.
(b)
Define detergents and discuss its chemical classification and major applications .
QNO 07
(a) What is semi conductors and discuss role of doping in the preparation of P-tpye and N-type conductors .
(b)
What are liquid and discuss their classification and role in living organisms.
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