The boundary between Earth's crust and mantle is _____.
1). Moho discontinuity
2). Lehman discontinuity
3). Conrad discontinuity
4). Gutenberg discontinuity
1. The Patkai hills belong to which mountain ranges?
2. The Appalachian coal fields, one of the important coal fieldsin the world, are located in :
3. China does not share its border with which Indian state?
4. The Tropic of Cancer does NOT pass through :
5. Which of the following gases is most predominant in theSun
7. Manas Tiger Reserve is in which state?
8. Earthquakes and volcanoes occur mostly in: