1. What is the surface area of the earth ?

1. 1. 15% of the earths surface is mass of the crust 5976 million tones land

   
   
   

   2. 29% of the earth's surface is mass of the crust 5976 million tones land

   
   
   

   3. 50% of the earth's surface is mass of the crust 5976 million tones land

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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2. Which of the following layers of the earth is believed to have the heaviest mineral materials of highest density ?

1. 1. Central core

   
   
   

   2. Crust

   
   
   

   3. Mantle

   
   
   

   4. Both (b) and (c)

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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3. What is the average density of the earth ?

1. 1. 0.49g cm^-3

   
   
   

   2. 3.3g cm^-3

   
   
   

   3. 1/1g cm^-3

   
   
   

   4. 5.517g cm^-3

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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4. In the interior of the Earth

1. 1. The temperature falls with increasing depth

   
   
   

   2. The pressure falls with increasing depth

   
   
   

   3. The temperature rises with increasing depth

   
   
   

   4. Both temperature and pressure fall with increasing depth

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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5. Which of the following earth's crust having thickness of 3400 km

1. 1. Mantle

   
   
   

   2. Sial

   
   
   

   3. Core

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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