Cadmium, Mercury, and Lead are well-known heavy metals that are highly toxic to humans and the environment, even at low concentrations. Sodium, on the other hand, is an essential electrolyte for human life and, in its common forms (like sodium chloride), is not considered toxic in the same way as the heavy metals listed, although excessive intake can be detrimental to health.
Which one of the following is non-toxic ?
Asked in HPPSC HPAS Prelims 2010 · Topic: Metals, Minerals, Ores: Properties, Uses (Uses of common metals and their compounds in industries and daily life)
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