1. Moho discontinuity lies at the depth of approximately

2. Which of the following features is the product of vulcanicity ?

3. Match List-I (Geological Era) with List-II (Geological Period) and select the correct answer using the codes given below the lists: List-I List-II
A. Mesozoic 1. Tertiary
B. Proterozoic 2. Triassic
C. Cainozoic 3. Pre-Cambrian
D. Palaeozoic 4. Permian Codes A B C D

4. Consider the following statements regarding the earthquakes:
1. The intensity of earthquake is measured on Mercalli scale.
2. The magnitude of an earthquake is a measure of energy released.
3. Earthquakes, magnitudes are based on direct measurement of amplitudes of seismic waves.
4. In the Richter scale, each hole number demonstrates a hundred fold increase in the amount of energy released. Which of there statements are correct?

5. Which scale is used to measure the intensity of earthquake?

6. Consider the following statements:
1. P-waves are the first seismic waves to reach a place.
2. S-waves travel only through liquids.
3. Arrival time of P-and S-waves is used to locate the epicentre.
4. Richter scale is a logarithmic scale. Which of the statements given above are correct?

7. Which is not a topography produced by volcanocity?

8. The number indicating the intensity of an earthquake on a Richter scale range between

9. Which of the following is the highest active volcano in the world?

10. Seisnology is the special branch of

11. ‘A valley of ten thousand smokes’ is the name given to a zone near the volcano

12. Which one of the following best describes the world distribution of active and recently active volcanoes?

13. Magma that reaches earth’s surface and then solidifies is called

14. Which of the following is/are the correct characteristic(s) of primary seismic wave?

15. Assertion (A) : The location of the epicentre of an earthquake may be estimated using the time-lag between the arrival of ‘P’ and ‘S’ waves. Reason (R) : The ‘L’ wave cannot start until the ‘P’ wave hits the surface. Codes

16. Assertion (A) : The outer core of the earth’s interior is in molten state while the inner core is in solid state. Reason (R) : The P-seismic waves disappear in outer core while S-waves penetrate up to the inner core. Codes

17. Krakatau, the most famous volcano of Indonesia, is located between

18. Craters or calderas are

19. Assertion (A) : The structrue of the interior of the earth is deduced with the help of seismic waves. Reason (R) : The ‘S’ waves travel in solid, liquid and gas while the ‘P’ waves travel only in solid. Codes

20. Dome mountain are the result of

21. Consider the following statements regarding earthquakes:
1. In earthquakes, shocks are generated at a point known as the epicentre.
2. The point of origin of shock may be within the crust or mantle.
3. The more earthquake prone areas are at the merging of tectonic plates. Which of the above statements are correct?

22. The lines joining the place of equal intensity of seismic waves are known as

23. Tectonic activity

24. The Magnitude of Earthquake is measured on the

25. Which of the following is a volcanic plateau?