Mineral lustre describes the way light interacts with the surface of a mineral.
It is specifically determined by how light is reflected from the mineral's surface.
This property helps in identifying minerals.
The appearance of a mineral in reflected light is its lustre.
Therefore, the correct description for lustre is the appearance of a mineral in reflected light.
Match List - I with List - II.
| List - I Optical feature | List - II Optical diagram |
|---|---|
| A. Wave front (isotropic) | I. Ellipse |
| B. Wave surface (isotropic) | II. Sphere |
| C. Wave front (anisotropic) | III. ellipsoidal |
| D. Wave surface (anisotropic) | IV. circle |
Choose the correct answer from the options given below :
Match List - I with List - II.
| List - I Earth's Internal Segment | List - II Approximate Average Thickness |
|---|---|
| A. Lithosphere | I. 2 km |
| B. Moho | II. 105 km |
| C. Core | III. 2900 km |
| D. Mantle | IV. 3500 km |
Choose the correct answer from the options given below :
Match List - I with List - II.
| List - I Fold type | List - II Characteristics |
|---|---|
| A. Polyclinal folds | I. Folds developed in many steps |
| B. Fan folds | II. Folds with variable axial surfaces |
| C. Conjugate folds | III. Folds in which axial surfaces dip towards each other |
| D. Cross folds | IV. Folds in which both the limbs are overturned |
Choose the correct answer from the options given below :
Match List - I with List - II.
| List - I Joint type | List - II Stress type |
|---|---|
| A. Sheet joints | I. Contractional |
| B. Extension joints | II. Residual |
| C. Columnar joints | III. Compressional |
| D. Conjugate joints | IV. Tensional |
Choose the correct answer from the options given below :
Match List - I with List - II.
| List - I Texture | List - II Rock |
|---|---|
| A. Ophitic | I. Syenite |
| B. Trachytoid | II. Dolerite |
| C. Myrmekite | III. Basalt |
| D. Glomeroporphyritic | IV. Granite |
Choose the correct answer from the options given below :
Match List - I with List - II.
| List - I Deposit | List - II Origin |
|---|---|
| A. Deluvium | I. Deposits formed by mass wasting |
| B. Eluvium | II. Residual products of the breakdown of primary rocks |
| C. Proluvium | III. Residual products of the breakdown of mobile rocks |
| D. Colluvium | IV. Sediments deposited by mudflows and other flash flows |
Choose the correct answer from the options given below :
Match List - I with List - II.
| List - I Minaral Resource | List - II Place |
|---|---|
| A. Copper | I. Ambadongar |
| B. Lead and zinc | II. Bastar |
| C. Iron | III. Zawar |
| D. Fluorite | IV. Khetri |
Choose the correct answer from the options given below :
Match List - I with List - II.
| List - I Mineral Resouce | List - II Stratigraphic Unit |
|---|---|
| A. Copper and iron | I. Damuda |
| B. Petroleum | II. Singhbhum |
| C. Coal | III. Eastern Ghat Khondalite |
| D. Bauxite | IV. Barail |
Choose the correct answer from the options given below :
On which of the following bases the Dharwar succession of Karnataka is divided into Lower and Upper Dharwar ?
A. Unconformity
B. Fossil evidence
C. Geochronological data
D. Economic minerals
Choose the correct answer from the options given below :
Schistosity forms due to :
A. Dynamothermal metamorphism
B. Contact metamorphism
C. Plutonic metamorphism
D. Thermal metamorphism
Choose the correct answer from the options given below :
Morgenthau's principles of political realism are:
A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:
Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?