CSS Past Papers of Chemistry Paper-I 2017

CSS Past Papers of  Chemistry Paper-I 2017

FEDERAL PUBLIC SERVICE COMMISSION

COMPETITIVE EXAMINATION - 2017

FOR RECRUITMENT TO POST IN BS - 17

UNDER THE FEDERAL GOVERNMENT

CSS Past Papers of  Chemistry Paper-I 2017

TIME ALLOWED: THREE HOURS

PART - I (MCQs): MAXIMUM 30 MINUTES

PART - I (MCQs): MAXIMUM MARKS = 20

PART - II MAXIMUM MARKS = 80

PART-II

Q. No. 2.

1. Derive Schrodinger wave equation for motion of a particle in one dimensional box.
2. Solve Schrodinger wave equation to find the expression for wave function energy of a particle in one dimensional box.
3. What is Eigen function and Eigen value? Give examples.

Q. No. 3.

1. Define heat capacities and molar heat capacities. Prove that Cp-Cv = R for ideal gases.
2. What is Gibbs energy? Derive a relation between standard Gibbs energy change and equilibrium constant.
3. Differentiate spontaneous and non spontaneous process.

Q. No. 4.

1. State and explain Kohlrausch’s law. Give its applications.
2. What is meant by standard deviation?
3. Give its significance in analytical chemistry. Briefly describe conductometric titrations.

Q. No. 5.

1. Discuss the effect of temperature on rate of chemical reaction on the basis of Arrhenius equation. How can you determine activation energy and pre-exponential factor for a chemical reaction using Arrhenius equation?
2. Derive kinetic equation for 1st order reaction.
3. Prove that half life period for 1st order reaction is independent of initial concentration of reactant.

Q. No. 6.

1. What is adsorption isotherm? Derive Langmuir adsorption isotherm for adsorption of a gas on solid surface.
2. What is enzyme catalysis? Discuss its kinetics.
3. What surfactants? Give their properties.

Q. No. 7.

1. What is electrophoresis? Give its principle and discuss its applications in biochemistry.
2. Give six chemical properties of nitrogen.
3. What is Common ions effect? Give its applications.

Q. No. 8.

1. State John-Teller theorem. Explain it using suitable examples from coordination complexes.
2. Give postulates of Werner’s theory of coordination complexes.
3. Briefly describe nuclear decay rate law for disintegration of radioactive elements.