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Persons are medically considered to have lead poisoning if they have a concentration greater than 10 micrograms of lead per decilitre of blood. Concentration in parts per billion is : (assume density of blood = 1 g/cc)

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100

0.1

1000

answer is B.

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Detailed Solution

Total mass in 10 micrograms,

$M = = 10 \times 10^{- 6} grams$

Here, the volume is 0.1 liter.

Now we know that,

$Concentration in ppm = \frac{Mass}{Volume} \times 10^{6}$

Put the given values,

$Concentration in ppm = \frac{10 \times 10^{- 6}}{0.1} \times 10^{6} Concentration in ppm = 100$

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