Geology IAS Paper 2 UPSC 2017 with Solutions

Geology Optional Paper 2 UPSC 2017 - Question Paper with Solutions 

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SECTION-A

Geology 1a Explain Bragg's law of diffraction of X-rays by a crystal with suitable diagram. UPSC 2017, 10 Marks

Geology 1b Differentiate between normal and reverse zoning in minerals with neat sketches. UPSC 2017, 10 Marks

Geology 1c Discuss with the help of neat diagram the IUGS classification of phaneritic ultrabasic rocks. UPSC 2017, 10 Marks

Geology 1d What is the process of recrystallization? Discuss the textures associated with the contact metamorphism. UPSC 2017, 10 Marks

Geology 1e Describe the common structures of sedimentary rocks with neat sketches and also comment on their significance. UPSC 2017, 10 Marks

Geology 2a Describe the structural classification of silicates with neat sketches and mineralogical examples. UPSC 2017, 20 Marks

Geology 2b Give an account of the crystal structure, chemical composition and optical properties of the minerals of the feldspar group. UPSC 2017, 20 Marks

Geology 2c With a suitable diagram, explain how the optic sign of a uniaxial mineral is determined. UPSC 2017, 10 Marks

Geology 3a Give various types of granitoids and discuss the classification based on tectonic settings. Add a note on the role of mantle in the genesis of granitoids. UPSC 2017, 20 Marks

Geology 3b Discuss metamorphic facies and series. Citing mafic assemblages of low grades, distinguish greenschist facies of metamorphism from prehnitepumpellyite facies of metamorphism. UPSC 2017, 20 Marks

Geology 3c Discuss the mineralogy, chemical characters and origin of carbonatites. Give suitable Indian examples. UPSC 2017, 10 Marks

Geology 4a Discuss the processes of diagenesis and lithification. UPSC 2017, 20 Marks

Geology 4b Give an account of the Proterozoic sedimentary basins of India. UPSC 2017, 20 Marks

Geology 4c Differentiate between molasse and flysch facies. UPSC 2017, 10 Marks

SECTION-B

Geology 5a What are stratiform and strata-bound deposits? Explain with suitable examples. UPSC 2017, 10 Marks

Geology 5b Describe the geological characteristics of important types of manganese deposits in the Indian shield. UPSC 2017, 10 Marks

Geology 5c What are the field evidences of mineralization which can be useful in mineral prospecting? UPSC 2017, 10 Marks

Geology 5d Discuss the texture, composition and types of aerolites. Comment upon the significance of chondrites. UPSC 2017, 10 Marks

Geology 5e Discuss coal mine water pollution and its impact on groundwater regime. Comment on the preventive measures to be taken to control groundwater pollution. UPSC 2017, 10 Marks

Geology 6a Write a detailed account on the geology and genesis of porphyry copper deposits. UPSC 2017, 20 Marks

Geology 6b Describe the geological characteristics of any three important types of uranium deposits in India. Draw neat sketches illustrating the geological setting of these deposits. UPSC 2017, 20 Marks

Geology 6c What are oil and gas windows? Explain with suitable diagram. UPSC 2017, 10 Marks

Geology 7a What are the criteria based on which indicator elements are selected for geochemical exploration of mineral deposits? Describe any two methods of interpreting geochemical data for recognition of geochemical anomaly. UPSC 2017, 20 Marks

Geology 7b Describe the objectives of detailed exploration stage of a mincral exploration programme. Add a note on exploratory mining and its application. UPSC 2017, 20 Marks

Geology 7c Draw a typical flowchart of a mineral beneficiation process and briefly explain its components. UPSC 2017, 10 Marks

Geology 8a Discuss different kinds of interatomic linkages. What are the principles of crystal structures? Comment upon the rules that govern atomic substitution of trace elements in silicates. UPSC 2017, 20 Marks

Geology 8b What is high-level nuclear waste? How is it managed and safely disposed in a geological repository? Add a note on its Indian scenario. UPSC 2017, 20 Marks

Geology 8c What do you understand by incompatibility of elements? Comment upon High Field Strength (HFS) and Large Ion Lithophile (LIL) elements. UPSC 2017, 10 Marks