A water sample has ppm level concentration of following ions as F- = 5 ppm; Pb²+ = 100 ppm; so42- =100 ppm The ion/ions that

Question

A water sample has ppm level concentration of following ions as
F- = 5 ppm; Pb²+ = 100 ppm; so42- =100 ppm
The ion/ions that make the above mentioned water sample unsuitable for drinking is/are
Only F-
Both F- and Pb²+
Both Pb²+ and so4²-
Only so4²-

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