Question

Lead concentration of blood is considered alarming at
A) \[~~4-6\mu m/100ml\]
B) \[10\mu g/100ml\]
C) \[20\mu g/100ml\]
D) \[30\mu g/100ml\]

Answer 1

Hint: The blood is the fluid of our body. Our heart, through arteries, pumps oxygenated blood into the body. The veins contain blood that is deoxygenated. The combustion of petrol as tetraethyl lead is used in petrol as an anti-knock. This leads to very damaging lead poisoning which disturbs the nervous system, liver, kidneys, and also causes brain damage in infants.

Complete answer: In infants, the Center for Disease Control and Prevention (CDC) reported that an average blood lead level of \[5\text{ }g/dL\] or above is a cause for concern. However, even with blood lead below \[5\text{ }g/dL\], lead can impair growth. Anaemia, nervous system dysfunction, fatigue, hypertension, renal disorders, reduced fertility and increased levels of miscarriages, and low birth weight and premature births can be encountered by adults who are exposed to a harmful amount of lead. The main heavy metal pollutant produced by the exhausts of vehicles is lead. It remains in the air and the rains precipitate. When ingested by water or inhaled as a suspended particle, it enters the human body. It is known to be poisoned at a blood concentration of \[30\mu g/100ml\] because it can cause aplastic anaemia, cancer and cancer. A \[70\text{ }\mu g/100\text{ }mL\] rise is normally associated with clinical symptoms. A level of \[30\mu g/100ml\] is therefore deemed alarming. Pb's primary water sources are the effluents of the lead and lead manufacturing industries.
Hence, option D is the correct answer.

Note: Hematopoiesis is the mechanism of stem cell regulation of blood cells. There are also blood cells present in the newborn's umbilical cord. Blood controls the body's temperature. To flush out the blood, they carry waste products to the kidneys.