Geology IFS Paper 2 UPSC 2019 with Solutions

Geology Optional Paper 2 UPSC 2019 - Question Paper with Solutions 

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SECTION-A

Geology 1a Explain briefly about the extinction angle of augite, hornblende and hypersthene with suitable diagrams. (IFS 2019/8 Marks)

Geology 1b Discuss briefly about the geographical distribution, tectonic setting and petrogenetic aspects of Deccan Volcanic Province. (IFS 2019/8 Marks)

Geology 1c Briefly explain the secondary structures of sedimentary rocks with suitable diagrams. (IFS 2019/8 Marks)

Geology 1d Why do anisotropic minerals exhibit interference colours between crossed polars? Explain with the help of neat sketches. (IFS 2019/8 Marks)

Geology 1e How would you distinguish between the following pairs of rocks petrographically? (IFS 2019/8 Marks)

Geology 1e i Granite and Gabbro.

Geology 1e ii Syenite and Charnockite.

Geology 2a Describe the sedimentary basins of India and mention their types, area, hydrocarbon prospects and regions. (IFS 2019/15 Marks)

Geology 2b Define the term 'cataclastic metamorphism' anci describe the important products formed due to cataclastic metamorphism. (IFS 2019/15 Marks)

Geology 2c Elaborate the symmetry elements of 'normal class' of cubic system with the help of neat well-labelled diagrams. (IFS 2019/10 Marks)

Geology 3a Explain the significance of heavy minerals in relation to mineral stability during transit and intrastratal solution. (IFS 2019/15 Marks)

Geology 3b Explain the factors responsible for the diversification of magma in igneous systems. (IFS 2019/10 Marks)

Geology 3c Describe the crystal structure, types, mineralogy, composition, physical and optical properties of mica group of minerals. (IFS 2019/15 Marks)

Geology 4a Write the mineral composition, texture and petrological characteristics of conglomerate and shale. (IFS 2019/10 Marks)

Geology 4b Discuss the significance of texture in understanding the origin and formation of igneous rocks with the help of suitable sketches. (IFS 2019/15 Marks)

Geology 4c Discuss the diagnostic physical, optical and chemical characteristics of two common rock-forming minerals each from inosilicates and nesosilicates. (IFS 2019/15 Marks)

SECTION-B

Geology 5a Write briefly about the origin of ore minerals from residual liquid of magma. (IFS 2019/8 Marks)

Geology 5b Mention briefly about the important types, depth and resources of important marine minerals. (IFS 2019/8 Marks)

Geology 5c Discuss briefly any four Pauling's rules related to crystal structure. (IFS 2019/8 Marks)

Geology 5d Discuss briefly the nature and morphology of concordant ore bodies with suitable sketches. (IFS 2019/8 Marks)

Geology 5e What do you understand by polymorphism? Also add a note on different types of polymorphism. (IFS 2019/8 Marks)

Geology 6a Give a brief account of mineralogy, modes of occurrence and distribution of gold deposits in India. (IFS 2019/15 Marks)

Geology 6b Discuss the causes and impacts of an earthquake on mankind. Mention the measures to be taken to reduce the disaster during the earthquake. (IFS 2019/15 Marks)

Geology 6c What are industrial resource minerals? Mention their applications with examples. (IFS 2019/10 Marks)

Geology 7a Write the necessary conditions for the formation of oil pool and also mention the kinds of oil and gas traps. (IFS 2019/15 Marks)

Geology 7b Discuss the geochemical classification of trace elements and explain the role of HFSE (high field strength elements) in magmatic crystallization. (IFS 2019/10 Marks)

Geology 7c Discuss in detail about the classification of mining methods with the help of suitable diagrams and examples. (IFS 2019/15 Marks)

Geology 8a What are the main objectives and highlights of 'National Mineral Policy' approved in 2019? (IFS 2019/10 Marks)

Geology 8b Mention briefly about the various types of chemical bonds found in minerals giving suitable examples and neat sketches. Also throw light on chemical bonding in diamond and graphite. (IFS 2019/15 Marks)

Geology 8c Discuss various principal methods used in geophysical investigations with suitable diagrams and examples. (IFS 2019/15 Marks)