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Chemistry · 2016
JEE Main 2016 · 2016-04-03 Offline · Q50
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…
The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be $\displaystyle 1000 \mathrm{ppb}, 40 \mathrm{ppb}, 100 \mathrm{ppm}$ and $\displaystyle 0.2$ ppm , respectively. This water is unsuitable for drinking due to high concentration of :
Official answer
(3)
Nitrate
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