UPSC Geography Oceans and continents Question Bank Oceanography

  • question_answer The correct sequence of major salts in the ocean waters in descending order with respect to percentage is

    A)  Sodium Chloride, Magnesium Chloride, Magnesium Sulphate, Calcium Sulphate

    B)  Magnesium Chloride, Magnesium Sulphate, Calcium Sulphate, Sodium Chloride

    C)  Sodium Chloride, Calcium Sulphate, Magnesium Sulphate, Magnesium Chloride

    D)  Magnesium Sulphate, Calcium Sulphate, Sodium Chloride, Magnesium chloride

    Correct Answer: A

    Solution :

     Major Salts in the Ocean Waters
    Name of the salt Quantity per thousand grams of water (%) Percentage of the total salts
    1. Sodium Chloride (NaCI) 27.213 77.8
    2. Magnesium Chloride \[(MgC{{I}_{2}})\] 3.807 10.9
    3. Magnesium Sulphate \[(MgS{{O}_{4}})\] 1.658 4.7
    4. Calcium Sulphate \[(CaS{{O}_{4}})\] 1.260 3.6
    5. Potassium Sulphate \[({{K}_{2}}S{{O}_{4}})\] 0.863 2.5
    6. Calcium Carbonate \[(CaC{{O}_{3}})\] 0.123 0.3
    7. Magnesium Bromide \[(MgB{{r}_{2}})\] 0.076 0.2
    Total 35,000 100.0

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