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

1. 1. 1 to 7

   
   
   

   2. 1 to 8

   
   
   

   3. 1 to 9

   
   
   

   4. 1 to 12

   
   
   

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   NA

   Correct Option: C

   NA

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

1. 1. They are found in association with young fold mountain chain

   
   
   

   2. They occur in river flood plains

   
   
   

   3. They are associated with old eroded mountain chains

   
   
   

   4. They are located on the western sides of continents

   
   
   

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   NA

   Correct Option: A

   NA

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13. 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 epicenter.
    4. Richter scale is a logarithmic scale.
    Which of the statements given above are correct ?

1. 1. 1, 2 and 3

   
   
   

   2. 1, 3 and 4

   
   
   

   3. 1 and 4

   
   
   

   4. 3 and 4

   
   
   

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   NA

   Correct Option: B

   NA

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

1. 1. It is longitudinal and compressional wave

   
   
   

   2. It is analogous to sound waves

   
   
   

   3. It travels with faster speed through solids but slowly through liquids

   
   
   

   4. All the above three

   
   
   

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   NA

   Correct Option: D

   NA

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15. Hawaii island are known for active volcanoes because

1. 1. They are located in the subuction zone of covering plates

   
   
   

   2. Faults and fractures are found there

   
   
   

   3. They are situated over a hot plume

   
   
   

   4. They are situated on a mild oceanic ridge with rising convective currents

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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