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Which of the following is not considered toxic metals?

(a) Zinc

(b) Copper

(c) Uranium

(d) H2O

I had been asked this question in homework.

The origin of the question is Metal topic in section Microbial Transformation of Heavy Metals of Environmental Biotechnology

1 Answer

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Best answer
Correct answer is (d) H2O

Best explanation: Water or H2O is considered as nontoxic, without any contamination water does not cause any harm to the environment and is not toxic at all, whereas, uranium on the other hand is radioactive and highly toxic, also, copper and zinc, both of them are considered to be toxic metals.

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