1
10 Marksmedium
Differentiate between magmatic differentiation and assimilation.
GeologyPetrology
2
10 Marksmedium
Discuss the basic differences in the crystal structures, physical and optical properties of pyroxene and amphibole.
GeologyMineralogy
3
10 Markseasy
Enumerate briefly on how the clastic rocks are classified on the basis of their grain-size.
GeologySedimentology
4
10 Marksmedium
Describe briefly the different types of twinning commonly found in minerals. Comment upon causes of twinning.
GeologyMineralogy
5
10 Marksmedium
Explain why all pleochroic minerals are anisotropic but all anisotropic minerals are not pleochroic.
GeologyMineralogy
6
20 Marksmedium
With neat sketches describe the symmetry elements and forms of the normal class of the orthorhombic system. Name three minerals of this class.
GeologyMineralogy
7
20 Marksmedium
Give an account of the atomic structure, chemical composition, and physical and optical properties of the minerals of mica group.
GeologyMineralogy
8
10 Markshard
A mineral section remains dark in all positions under crossed polars. How would you proceed to determine whether the mineral is (i) isotropic, (ii) uniaxial or (iii) biaxial ?
GeologyMineralogy
9
20 Marksmedium
Discuss Bowen's Reaction Series. What is its significance in the process of crystallization of magma ?
GeologyPetrology
10
20 Marksmedium
Discuss the origin of anorthosites.
GeologyPetrology
11
20 Marksmedium
What are heavy minerals ? Discuss their significance in sedimentological studies.
GeologySedimentology
12
10 Marksmedium
ACF diagram
GeologyPetrology
13
10 Marksmedium
AKF diagram
GeologyPetrology
14
10 Marksmedium
In a mineral, the refractive indices are determined as ω = 1.548 and δ = 1.634. Calculate the birefringence of the mineral and comment on its optic nature.
GeologyMineralogy
15
10 Marksmedium
Briefly discuss the different ore-forming processes in sedimentary environment.
GeologyEconomic Geology
16
10 Marksmedium
What is rank of coal ? Discuss the general changes that coal may undergo during its increase in rank.
GeologyEconomic Geology
17
10 Marksmedium
Describe the distribution of gold deposits in India.
GeologyEconomic Geology
18
10 Marksmedium
Describe the mineralogy, chemical composition and occurrences of manganese nodules in Indian Ocean.
GeologyOceanography
19
20 Marksmedium
How oil reserves are formed and accumulated in nature? What are the different types of oil traps? Illustrate with neat diagrams.
GeologyEconomic Geology
20
20 Marksmedium
Discuss briefly the problem of fluoride contamination in groundwater giving emphasis on its distribution and related health hazards.
GeologyEnvironmental Science
21
10 Marksmedium
What is an earthquake? Discuss briefly the main causes of earthquake. How earthquake intensity is measured ?
GeologyGeophysics
22
20 Marksmedium
What are the common methods adopted for resistivity survey in an area ? Describe briefly their field procedures and working principle. Also discuss advantages disadvantages of the methods.
GeologyGeophysics
23
20 Marksmedium
Describe briefly the geochemical classification of elements. Add a note on the role of trace elements in magmatic crystallisation.
GeologyGeochemistry
24
10 Markseasy
Discuss briefly the 'National Mineral Policy'.
EconomyGovernance
25
20 Marksmedium
What are the differences between Banded Iron Formation and Ironstone? Why there is minimum/no detritus found in Banded Iron Formation ?
GeologySedimentology
26
20 Marksmedium
Give a brief description of mode of occurrence and distribution in India of Bauxite deposits.
GeologyEconomic Geology
27
10 Marksmedium
Enumerate the legislative measures in India for environment protection.
PolityEnvironment