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Soluble ions of heavy metals are toxic above _______ ppm in industrial waste.

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in Hazardous Waste Management by (63.0k points)
Soluble ions of heavy metals are toxic above _______ ppm in industrial waste.

(a) 1

(b) 2

(c) 3

(d) 4

The question was asked in class test.

The query is from Biological Treatment in portion Chemical, Physical & Biological Treatment of Hazardous Waste Management

1 Answer

0 votes
by (424k points)
Right option is (b) 2

Explanation: Soluble ions of heavy metals in industrial waste are toxic above 2 ppm, but their insoluble precipitates are not.

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