Lead concentration in blood is considered alarming if it is (a) 20 μg/100 mL (b) 30 μg/100 mL (c) 4-6 μg/100 mL (d) 10 μg/100 mL
Lead concentration in blood is considered alarming if it is
(a) 20 μg/100 mL (b) 30 μg/100 mL (c) 4-6 μg/100 mL (d) 10 μg/100 mL
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Correct option(b) 30 μg/100 mL
Explanation
The concentration of lead in blood averages about 25 μg /100 mL. Increase to 70 μg /100 mL is generally associated with clinical symptoms. Hence, a level of 30μg/100mL is considered alarming. The chief sources of Pb to water are the effluents of lead and lead processing industries.
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