Q1 A of 34 Page 82

Choose the correct answer:

The Sunda Trench lies in the ___________ ocean.


OPTION C is correct because it is located in the North-eastern part of the Indian Ocean. It is the deepest trench in the Indian Ocean. It also forms the boundary between Indo-Australian plate and Eurasian plate.


OPTION A is wrong because Puerto Rico Trench is the deepest trench in the Atlantic Ocean.


OPTION B is wrong because Mariana Trench is the deepest trench in the Pacific Ocean.


OPTION D is wrong because South Sandwich Trench is the deepest trench in the Antarctic Ocean.

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1 B

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The temperature of the ocean waters generally_______ at greater depth.


 1 C

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Ocean currents are produced due to _________


 1 D

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Consider the following statements.


1. Most of the fishing grounds occur in areas where the continental shelf is wide.


2. Fishing is well developed in warm tropical waters.


3. Mixing of warm and cold currents facilitates plant nutrients for fish.


4. Inland fishing became significant in India.


 1 E

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The oceanic ridge comes into existence due to