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NEET Sample Paper NEET Sample Test Paper-93

  • question_answer
    Siliceous frustules of diatoms being indestructible, piled up at the bottom of ocean and formed a thick bed over billions of years. Such a thick bed is known as

    A) red sea

    B)                    diatomaceous earth

    C) pseudorocks                  

    D) red tides

    Correct Answer: B

    Solution :

    [b] The diatom shells accumulating up at the bottom of oceans over millions of years formed deposits called diatomaceous earth. These deposits may be thousand metres thick with as many as five million diatom shells in each cubic centimetre. This diatomaceous earth is used in many small and large scale industries.


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