B.Sc-B.Sc Geology 6th Sem ECONOMIC GEOLOGY(Alagappa University, Karaikudi, Tamil Nadu-2011)

B.Sc. DEGREE EXAMINATION, APRIL 2011
Sixth Semester
Geology
ECONOMIC GEOLOGY
(Non-CBCS—2004 onwards)
Time : 3 Hours Maximum : 100 Marks
Section A (10 × 2 = 20)
Answer all questions.
1. Define Placer deposits.
2. Define Grade.
3. Define Ore.
4. Define Gangue.
5. Give the composition of manganese.
6. Write the uses of chromium.
7. Define raw materials.
8. Write the uses of glasses.
9. What are the varieties of Coals ?
10. Write any four petroleum products.
Section B (5 × 7 = 35)
Answer all questions.
11. (a) Explain the following terms with example :—
(a) Grade.
(b) Tenor.
(c) Protore.
(Or)
(b) Explain the process of oxidatin and supergene enrichment.
12. (a) Explain the controls of ore localisation.
(Or)
(b) Explain the metallogenic epochs and provinces.
13. (a) Give an account of Beryllium and their distribution in India.
(Or)
(b) Explain the uses of Lead and Zinc.
14. (a) Give an account on paint and pigments along with the distribution of their ores in India.
(Or)
(b) Write the origin and occurrences of various gemstones of India.
15. (a) Write a short note on the Tertiary coal field in Tamil Nadu.
(Or)
(b) Explain the migration process of petroleum.
Section C (3 × 15 = 45)
Answer all questions.
16. (a) Explain the process involved in the formation of mineral deposit.
(Or)
(b) Explain the Bateman’s classification.
17. (a) Explain the composition, mode of occurrence and distribution of Uranium and Thorium.
(Or)
(b) Give a detail account of the origin, occurrences and distribution of refractories, Abrasives and Ceramics.
18. (a) Enumerate mineral wealth of Tamil Nadu.
(Or)
(b) Give a detailed account on the Raniganj Coal Field.

Earning:  ₹ 6.05/-