The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of:

Lead

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Nitrate

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Iron

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Fluoride

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Solution

The correct option is B Nitrate
Maximum limit of nitrate in potable water is 50 ppm.

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The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of:

The correct option is B NitrateMaximum limit of nitrate in potable water is 50 ppm.

The correct option is B Nitrate
Maximum limit of nitrate in potable water is 50 ppm.