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Question

Identify the correct statements:
A. In the oceans the highest salinity is found in the latitudinal belt of 15° N and 10° S.
B. Sodium chloride is the leading salt in oceans.
C. Great Salt Lake of Anatolian plateau has a salinity of 240‰.
D. Baltic sea salinity is much below the normal salinity of the oceans.

Choose the correct answer from the options given below:

The correct answer is
B and D Only

Ocean Salinity Statements: Analysis

Statement A: Salinity Belt Location

The highest ocean salinity typically occurs in subtropical regions (around 20° to 30° North and South latitude). This is due to high evaporation rates and low precipitation in these zones. The statement places the highest salinity belt at 15° N and 10° S, which is near but not the precise location of the maximum salinity zones. Therefore, this statement is considered incorrect.

Statement B: Leading Salt in Oceans

Sodium chloride (NaCl) is the most abundant salt dissolved in ocean water. It constitutes approximately 85% of all dissolved solids in seawater. This statement is factually correct.

Statement C: Great Salt Lake Salinity

The famous Great Salt Lake is located in Utah, USA, not on the Anatolian plateau. While lakes on the Anatolian plateau, like Lake Tuz, can have extremely high salinities (sometimes exceeding 300 parts per thousand, denoted as ‰), the statement incorrectly associates the name "Great Salt Lake" with the Anatolian plateau. The salinity figure of 240‰ might be plausible for a highly saline lake in that region, but the geographical association is incorrect. Therefore, this statement is considered incorrect.

Statement D: Baltic Sea Salinity

The Baltic Sea has a significantly lower salinity compared to the world's oceans. This is because it receives large amounts of freshwater runoff from numerous rivers and has limited exchange with the more saline North Sea and Atlantic Ocean. Its average salinity is around 6-8‰, which is considerably lower than the typical ocean salinity of about 35‰. This statement is factually correct.

Conclusion

Based on the analysis, statements B and D are correct.

Correct Option: 2. B and D Only

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Important Questions from Oceanography

  1. Which one of the following is not a cold current?

  2. Which of the following positions of Sun, Earth and Moon is/are suitable for Spring Tide?

    1. SYZYGY Conjunction

    2. SYZYGY Opposition

    3. Quadrature

    Select the correct answer using the code given below :

  3. The maximum depth of Lithosphere is found in the

  4. The periodic rise and fall of ocean water in response to gravitational forces is called

  5. Consider the following statements regarding 'fronts':

    1. The movement of a front causes a slow change in weather in the area over which it moves.

    2. Cold fronts are associated with thunderstorms.

    3. Warm front is the boundary between an advancing mass of warm air where it is overriding and rising above a mass of colder air.

    Which of the statements given above is/are correct?

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