Question

Lead concentration in blood of adults is considered alarming, if it is more than

• A. 20 $\mu$g / 100 ml
• B. 30 $\mu$g / 100 ml
• C. 10 $\mu$g / 100 ml
• D. 4 - 6 $\mu$g / 100 ml

Answer 1

The correct option is B 30 $\mu$g / 100 ml

The Normal lead concentration is 30 µg/100 ml. If lead concentration increases more then this it could cause diseases like cancer, brain tumors. This mark was set by the International Pollution Regulation Organisation.

So, the correct option is 'Option B'.