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  1. Among oceanic trenches the deepest trench is
    1. Kurile trench
    2. Japan trench
    3. Mariana trench
    4. Tonga trench
Correct Option: C

Mariana trench is the deepest trench located in the pacific ocean near Japan. The Mariana Trench or Marianas Trench is the deepest part (11 km) of the world's oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islands.



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