Threshold limit value of copper in the atmospheric air is:

Question 

Threshold limit value of copper in the atmospheric air is:

(a) 0.001 mg/m³

(b) 0.01 mg/m³

(c) 1.0 mg/m³

(d) 5.0 mg/m3

Solution

Correct Answer is: (c) 1.0 mg/m³

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