6. The Great Barrier reef is

1. 1. Conglomeration of corals in Australian waters

   
   
   

   2. Mountains range in Utah, USA

   
   
   

   3. Salt hills of Afghanistan

   
   
   

   4. Sub - oceanic mountain in south China sea

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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7. Which one of the following conditions are not favourable for the growth of coral reefs ?

1. 1. Sediment free water

   
   
   

   2. Fresh water

   
   
   

   3. Moderate Saline water

   
   
   

   4. Disturbed water and currents

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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8. Consider the following statements
   1. Temperature of surface water is comparatively higher in the northern hemisphere.
   2. The isotherms in the southern hemisphere are not regular and do not follow the latitudes while they (isotherms) are regular and follow the latitudes in the northern hemisphere.
   Which of the statement (s) given is / are correct ?

1. 1. 1 only

   
   
   

   2. 2 only

   
   
   

   3. Both 1 and 2

   
   
   

   4. Neither 1 nor 2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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9. Assertion (A) : The temperature recorded at the surface of enclosed seas of high latitudes is lower than the temperature recorded at relatively greater depth.
   Reason (R) : The surface of ocean directly receives insolation and heat is transmitted to the lower part of the ocean through the process of conduction.
   Codes

1. 1. Both (A) and (R) are true and (R) is the correct explanation of (A)
      

   
   
   

   2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
      

   
   
   

   3. (A) is true but (R) is false
      

   
   
   

   4. (A) is false but (R) is true
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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10. Consider the following statements
    1. The temperature and salinity differences, the trigger thermohaline circulation of deep-sea, are generated at the ocean surface in the low-latitude wind belts.
    2. The deep-sea currents of Indian Ocean are generated in the water girdling Antarctica.
    Which of the statements given above is / are correct ?

1. 1. 1 only

   
   
   

   2. 2 only

   
   
   

   3. Both 1 and 2

   
   
   

   4. Neither 1 nor 2

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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