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UPSC Geology PYQs 2015 | Vaidra | Vaidra
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Geology UPSC PYQ 2015

74 questions from the UPSC 2015 examination. Showing a preview of 3 below — generate a full practice test to solve the rest.

3 questions

1Medium10 marks
Explain the phenomenon of twinning and discuss the twinning in feldspars with neat sketches.
2Medium50 marks
(a) Explain the difference between syngenetic and epigenetic deposits with neat sketches and suitable examples. (10 marks)
(b) What are the placer minerals produced from beach sands in India? Describe the properties and uses of any two of these minerals. (10 marks)
(c) Briefly describe the principles and applications of self-potential and induced polarization. (10 marks)
(d) What are the chemical parameters which determine the coordination number of a cation in crystal structure? Illustrate with examples of cations in 3-fold and 4-fold coordination in rock forming minerals. (10 marks)
(e) What are the sources of marine pollution and their effect on marine ecosystem? (10 marks)
3Medium10 marks
Differentiate between panchromatic, multispectral and hyperspectral images.

71 more Geology 2015 questions await

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