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Exam of METALLURGICAL ANALYSIS, Exams of Metallurgical Engineering

Jamia Millia IslamiaMetallurgical Engineering

B.Tech Semester Supplimentary Examinations, June 2009 METALLURGICAL ANALYSIS (Metallurgy

Typology: Exams

2010/2011

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Code No: RR11801 Set No. 1
I B.Tech Semester Supplimentary Examinations, June 2009
METALLURGICAL ANALYSIS
(Metallurgy & Material Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
โ‹†โ‹†โ‹†โ‹†โ‹†
1. (a) What is the difference between the gross sample and the laboratory sample
with reference to solids?
(b) Describe various methods of reduction of bulk sample. [8+8]
2. (a) What is a borax bead test? How is it carried out? Give the applications of
this test for qualitative analysis. [7]
(b) Mention the spot test analysis for the following
i. Al
ii. Ni
iii. Mo. [3 ร—3]
3. How is Copper determined in Brasses, Aluminium Broznes and Nickel Silvers?
[5+6+5]
4. (a) Describe the procedure for determination of Phosphorous in Iron by Gravi-
metric method.
(b) How is the combined carbon estimated by Colorometry technique? [8+8]
5. Write short notes on
(a) Parting technique for separation of silver and gold.
(b) Fire assaying agents (fluxes) for gold and silver assaying. [8+8]
6. Name the important instruments used in various instrumental analysis methods.
Compare and contrast their advantages and limitations. Also give their applica-
tions. [16]
7. (a) What are the advantages of using calomel electrode over hydrogen electrode?
(b) With neat sketches discuss use of calomel electrodes in potentiometric titra-
tion. [8+8]
8. Write short notes on the following:
(a) Commercial polaroghaphs.
(b) Polarographic cells. [8+8]
โ‹†โ‹†โ‹†โ‹†โ‹†
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I B.Tech Semester Supplimentary Examinations, June 2009 METALLURGICAL ANALYSIS (Metallurgy & Material Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks โ‹† โ‹† โ‹† โ‹† โ‹†

  1. (a) What is the difference between the gross sample and the laboratory sample with reference to solids? (b) Describe various methods of reduction of bulk sample. [8+8]
  2. (a) What is a borax bead test? How is it carried out? Give the applications of this test for qualitative analysis. [7] (b) Mention the spot test analysis for the following i. Al ii. Ni iii. Mo. [3 ร— 3]
  3. How is Copper determined in Brasses, Aluminium Broznes and Nickel Silvers? [5+6+5]
  4. (a) Describe the procedure for determination of Phosphorous in Iron by Gravi- metric method. (b) How is the combined carbon estimated by Colorometry technique? [8+8]
  5. Write short notes on

(a) Parting technique for separation of silver and gold. (b) Fire assaying agents (fluxes) for gold and silver assaying. [8+8]

  1. Name the important instruments used in various instrumental analysis methods. Compare and contrast their advantages and limitations. Also give their applica- tions. [16]
  2. (a) What are the advantages of using calomel electrode over hydrogen electrode? (b) With neat sketches discuss use of calomel electrodes in potentiometric titra- tion. [8+8]
  3. Write short notes on the following:

(a) Commercial polaroghaphs. (b) Polarographic cells. [8+8]

I B.Tech Semester Supplimentary Examinations, June 2009 METALLURGICAL ANALYSIS (Metallurgy & Material Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks โ‹† โ‹† โ‹† โ‹† โ‹†

  1. (a) Discuss the following with reference to reduction of bulk samples [5+5] i. Tabling. ii. Mechanical dividers. (b) Write briefly on the significance of sampling in the analysis of raw materials. [6]
  2. (a) Mention the factors that should be taken into consideration in choosing an analytical method. (b) Give the advantages and disadvantages of classical methods of analysis.[8+8]
  3. (a) Describe the procedure for Pb determination in Sn base alloys. (b) How is Sn estimated in Cu Alloys by volumetric method. [8+8]
  4. Write a short note on the following:

(a) Cr estimation in high Cr & high Ni steels. (b) Ni determination from Cast Irons by Gravimetric method. [8+8]

  1. (a) List the different methods for determining iron content, in Iron oxes. (b) Discuss the principle involved in the determination of iron content in iron ores by any one method with relevant equations. [8+8]
  2. (a) What is the basic principle on which the colorimetric analysis works. Compare the advantages and limitations of colorimetric analysis with other methods of instrumental analysis. (b) In case of colorimetric analysis the final analysis involves judgment by human eye. Where does really judgment by human eye involve. Is it going to lead for major errors in final analysis? How the error may be prevented or reduced. Give your suggestions for better results in this technique. [8+8]
  3. (a) Comment on manually operated ultraviolet/visible spectrophotometer. (b) Discuss spectrophotometric determination of the PH value of an indicator. [8+8]
  4. (a) With a neat sketch, discuss electrolytic separation of metals with controlled cathode potential. (b) Explain the effect of stirring during electrolysis. [10+6]

I B.Tech Semester Supplimentary Examinations, June 2009 METALLURGICAL ANALYSIS (Metallurgy & Material Technology) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks โ‹† โ‹† โ‹† โ‹† โ‹†

  1. (a) What is the difference between the gross sample and the laboratory sample with reference to solids? (b) Describe various methods of reduction of bulk sample. [8+8]
  2. (a) Give the essential requirements for the successful application of spot tests for the identification of radicals. (b) How are the following detected? Give the necessary chemical reactions i. Iron. ii. Chromium. [6+10]
  3. How is Copper determined in Brasses, Aluminium Broznes and Nickel Silvers? [5+6+5]
  4. (a) Describe the procedure for determination of Phosphorous in Iron by Gravi- metric method. (b) How is the combined carbon estimated by Colorometry technique? [8+8]
  5. Write short notes on

(a) determination of maganese content in manganese ores. (b) furnaces used for cupellation. (c) parting of silver and gold from lead. [5+5+6]

  1. (a) Explain the need for instrumental analysis in metallurgical analysis. (b) List the different instrumental techniques used in analysis of metallurgical samples. (c) State and explain Beer-Lambert law. [6+4+6]
  2. (a) Sketch common types of curves (current-voltage) encountered in amperomet- ric titrations together with the corresponding hypothetical polarograms and explain. (b) Mention various advantages of amperometric titrations? [11+5]
  3. (a) Discuss determination of the half-wave potential of the cadmium ion in M-potassium chloride solution using manual polarograph. (b) Explain about polarography and simple spectroscope. [8+8]