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The Tolerable limit of fluoride is ppm....

The Tolerable limit of fluoride is ________ ppm.

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Knowledge Check

  • Tolerable limits of lead and fluorides drinking water according to international standard are respectively

    A
    50 ppm and 3 ppm
    B
    50 ppm and 1 ppm
    C
    50 ppm and 5 ppm
    D
    1ppm and 50 ppm

  • Tolerable limits of lead and fluorides in drinking water according to international standard are respectively

    A
    50ppm and 3ppm
    B
    50ppb and 1ppm
    C
    50ppm and 5ppm
    D
    1ppm and 50ppm

  • Correct statements of the following are Fluorides can be detected by zirconium - alizarin S - dye Harmless level of fluorides in water is upto 10ppm In Nalgonda technique bleaching powder, lime and alum are added in the same order Less than 3ppm of fluoride concentration can caui1e fluorosis

    A
    A and C
    B
    C and D
    C
    B and D
    D
    A and B

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    The COD of pure sample of water is ______ppm.

    The oxidation of fluoride is very difficult to perform. Why?

    How is fluoride detected ?

    Correct statements of the following are A) Fluorides can be detected by zirconium - alizarin S - dye B) Harmless level of fluorides in water is upto 10ppm C) In Nalgonda technique bleaching powder, lime and alum are added in the same order

    Flurosis disease is caused due to the reaction of-with excess of fluoride in the body.

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