Exam Details
| Subject | Electro analytical and Other methods | |
| Paper | ||
| Exam / Course | Post Graduate Diploma in Analytical Chemistry | |
| Department | School of Sciences (SOS) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
What do you understand by cell potential Describe a Galvanic cell and write an expression for its cell potential.
Explain the term Coulometry and list the different types of coulometric methods.
What are the characteristics of a reference electrode Describe the construction of hydrogen electrode with a suitable diagram.
Define the units of radioactivity, Curie and Becquerel Calculate the strength of 9·6 ng of 198Au in Curie.
Explain molar conductivity and equivalent conductivity for an electrolyte. Explain how they are related to each other.
The conductivity of a 0·1 M HCl solution is 0·0394 ohm^-l cm^-1What is the molar conductivity of the solution?
Explain anodic stripping voltammetry with the help of a suitable illustration.
What is meant by diffusion current? Write down the Ilkovic equation explaining all the terms.
Explain the difference between controlled potential coulometry and constant current coulometry.
What do you mean by thermogravimetric analysis Describe the sources of errors in TGA briefly.
Explain the principle of differential thermal analysis. Draw a differential suitable diagram of a thermal analyzer.
Explain the difference between thermometric and classical titrations. Draw the nature of titration curve in both the cases.
Discuss the important criteria for the choice of radiotracer. Which radioisotope will you use for the determination of Mn in steel, 54Mn =312d) or 56Mn(tl/2
Explain the technique isotope dilution analysis and derive its equation for the determination of percentage content of unknown.
What do you mean by polarisation Discuss concentration polarisation and the importance of overvoltage.
Explain linear sweep voltammetry and sampled DC polarography.
Discuss the terms polarography and the dropping mercury electrode (DME).
Define the terms Kinetic currents and Catalytic currents. Distinguish between the two.
Draw the thermogravimetric curve for a mixture of MgC03 and CaC03. How would you calculate the masses of Mg and Ca?
How will you analyze biological materials with the help of differential thermal analysis? 5
Explain the principle of neutron activation analysis and derive its equation for the determination of concentration by comparator method.
8. Write brief notes on any five of the following:
Liquid Junction Potential
Amperometry
Sources of Neutrons
Ionic Product of Water
Cyclic Voltammetry
Radioimmunoassay
Explain the term Coulometry and list the different types of coulometric methods.
What are the characteristics of a reference electrode Describe the construction of hydrogen electrode with a suitable diagram.
Define the units of radioactivity, Curie and Becquerel Calculate the strength of 9·6 ng of 198Au in Curie.
Explain molar conductivity and equivalent conductivity for an electrolyte. Explain how they are related to each other.
The conductivity of a 0·1 M HCl solution is 0·0394 ohm^-l cm^-1What is the molar conductivity of the solution?
Explain anodic stripping voltammetry with the help of a suitable illustration.
What is meant by diffusion current? Write down the Ilkovic equation explaining all the terms.
Explain the difference between controlled potential coulometry and constant current coulometry.
What do you mean by thermogravimetric analysis Describe the sources of errors in TGA briefly.
Explain the principle of differential thermal analysis. Draw a differential suitable diagram of a thermal analyzer.
Explain the difference between thermometric and classical titrations. Draw the nature of titration curve in both the cases.
Discuss the important criteria for the choice of radiotracer. Which radioisotope will you use for the determination of Mn in steel, 54Mn =312d) or 56Mn(tl/2
Explain the technique isotope dilution analysis and derive its equation for the determination of percentage content of unknown.
What do you mean by polarisation Discuss concentration polarisation and the importance of overvoltage.
Explain linear sweep voltammetry and sampled DC polarography.
Discuss the terms polarography and the dropping mercury electrode (DME).
Define the terms Kinetic currents and Catalytic currents. Distinguish between the two.
Draw the thermogravimetric curve for a mixture of MgC03 and CaC03. How would you calculate the masses of Mg and Ca?
How will you analyze biological materials with the help of differential thermal analysis? 5
Explain the principle of neutron activation analysis and derive its equation for the determination of concentration by comparator method.
8. Write brief notes on any five of the following:
Liquid Junction Potential
Amperometry
Sources of Neutrons
Ionic Product of Water
Cyclic Voltammetry
Radioimmunoassay
Other Question Papers
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Subjects
- Basic Analytical chemistry
- Electro analytical and Other methods
- Separation methods
- Spectroscopic methods