1
10 Marksmedium
What are the principles of Miller Indices and Hermann Maugin notation for a crystal face? Calculate Miller Indices of a crystal face which intersects a-axis at 2 unit distance, b-axis at 3 unit distance and is parallel to c-axis.
GeologyMineralogyCrystallography
2
10 Marksmedium
What are 'porphyritic' and 'vitrophyric' textures? Describe with the help of suitable sketches. Comment on petrogenetic significance of vitrophyric texture.
GeologyPetrologyIgneous Petrology
3
10 Marksmedium
Define 'partial melting'. Discuss the role of partial melting in magma generation.
GeologyPetrologyIgneous Petrology
4
10 Markshard
Define thermodynamic phase rule and state its mathematical expression. Determine the degree of freedom for a system under equilibrium with 8 components and 5 mineral phases. Briefly discuss the principle of ACF diagram.
GeologyPetrologyGeochemistry
5
10 Markseasy
What are ripple marks? Describe the different types of ripple marks and their geological significance.
GeologySedimentologyStratigraphy
6
20 Marksmedium
What is interference figure? What are the conditions required for the formation of interference figures for uniaxial minerals. Draw optic axis for uniaxial negative and positive crystals.
GeologyMineralogyOptical Mineralogy
7
10 Marksmedium
What are 'porphyritic' and 'vitrophyric' textures? Describe with the help of suitable sketches. Comment on petrogenetic significance of vitrophyric texture.
GeologyPetrologyIgneous Petrology
8
10 Marksmedium
Define 'partial melting'. Discuss the role of partial melting in magma generation.
GeologyPetrologyIgneous Petrology
9
10 Markshard
Define thermodynamic phase rule and state its mathematical expression. Determine the degree of freedom for a system under equilibrium with 8 components and 5 mineral phases. Briefly discuss the principle of ACF diagram.
GeologyPetrologyGeochemistry
10
10 Markseasy
What are ripple marks? Describe the different types of ripple marks and their geological significance.
GeologySedimentologyStratigraphy
11
20 Marksmedium
What is interference figure? What are the conditions required for the formation of interference figures for uniaxial minerals. Draw optic axis for uniaxial negative and positive crystals.
GeologyMineralogyOptical Mineralogy
12
20 Marksmedium
Discuss classification, composition and structure of pyroxene group of minerals. Comment upon optical properties and occurrence of hypersthene.
GeologyMineralogyPetrology
13
10 Marksmedium
Describe using projection diagram various crystal-forms developed in the normal class of tetragonal system.
GeologyMineralogyCrystallography
14
10 Markshard
Explain using phase rule the binary eutectic nature of diopside-anorthite system. Comment upon textures produced during crystallization of basaltic magmas rich in diopside and anorthite components.
GeologyPetrologyIgneous Petrology
15
20 Marksmedium
What is the characteristic mineralogy and chemistry of alkaline rocks? Discuss tectono magmatic setting and magma generation of alkaline rocks.
GeologyPetrologyIgneous Petrology
16
20 Marksmedium
What is the concept of 'facies' and 'grade' in metamorphism? Discuss important facies associations in regionally and thermally metamorphosed rock.
GeologyMetamorphic Petrology
17
20 Marksmedium
Define heavy minerals. Describe the different methods of their separation and comment on the utility of heavy mineral suite in provenance determination.
GeologySedimentologyGeochemistry
18
20 Markseasy
What are conglomerates? Describe their classification and geological significance.
GeologySedimentologyStratigraphy
19
10 Marksmedium
Discuss the fabric, composition and geological significance of arkose.
GeologySedimentologyStratigraphy
20
10 Marksmedium
Discuss various forms and structures associated with hydrothermal sulphide deposit. Comment upon sequence of mineral formation in Singhbhum sulphide deposit.
GeologyEconomic GeologyOre Deposits
21
10 Marksmedium
Discuss quality criteria used for limestone and gypsum in cement industry. Comment upon distribution of cement grade limestone in Vindhyan basin.
GeologyEconomic GeologyIndustrial Minerals
22
10 Marksmedium
What is meant by pitch and plunge of an ore body? Calculate average grade of a Pb-ore body from the given data.
GeologyEconomic GeologyOre Deposits
23
10 Marksmedium
Discuss significance of meteorite in cosmochemistry.
GeologyGeochemistryCosmochemistry
24
10 Marksmedium
How is ground water of coastal areas contaminated by seawater intrusion and comment on its mitigation.
GeologyHydrogeologyEnvironmental Geology
25
20 Marksmedium
Discuss distribution, mode of occurrence, mineralogy and genesis of Precambrian Iron ore deposits of India.
GeologyEconomic GeologyOre Deposits
26
20 Marksmedium
What is refractory material? Discuss geology, mode of occurrence and origin of refractory minerals of South India.
GeologyEconomic GeologyIndustrial Minerals
27
10 Marksmedium
Give distribution of petroliferous basins in India. Discuss geology of oil-fields of Assam basin.
GeologyEconomic GeologyPetroleum Geology
28
20 Marksmedium
Enumerate different types of mining methods. Discuss in detail coal mining methods.
GeologyEconomic GeologyMining Engineering
29
20 Marksmedium
Describe mineralogy and genesis of rock phosphate or phosphorite deposits of India. Comment upon its grade used in the fertilizer industry.
GeologyEconomic GeologyIndustrial Minerals
30
10 Marksmedium
Discuss various types of modifiers and their role in the froth flotation process.
GeologyEconomic GeologyMineral Processing
31
20 Markshard
What are general characteristics of 'lanthanides'? Why is Rare Earth Element (REE) abundances in a rock expressed with the help of chondrite normalized diagram? What is petrogenetic significance of 'Ce' and 'Eu' anomaly?
GeologyGeochemistryIgneous Petrology
32
10 Marksmedium
Define 'isomorphism' and 'polymorphism' with suitable examples. What are different types of polymorphism?
GeologyMineralogyCrystallography
33
20 Marksmedium
What are different types of radioactive waste forms? How are they disposed in geological repository?
GeologyEnvironmental GeologyNuclear Geology