Ques. 1AIPMT 2004
Lead concentration in blood is considered alarming if it is -
- 4-6 g/100 mL
- 30 g/100 mL
- 20 g/100 mL
- 10 g/100 mL
Answer
(2) 30 g/100 mL
Solution
Normal lead concentration in human blood is about 4–20 g/100 mL.
Lead (mainly from leaded petrol exhaust, paints and pipes) accumulates in the body and damages the nervous system, kidneys and haemoglobin synthesis, so a blood-lead level of about 30 g/100 mL or more is considered alarming (lead poisoning).
∴ The alarming level is 30 g/100 mL.
Answer: (2)
Out of syllabus