Question
Chemistry Question on Environmental Chemistry
Tolerable limits of lead and fluoride in drinking water according to International Standards are respectively
A
50 ppm and 1 ppm
B
50 ppb and 1 ppm
C
50 ppb and 5 ppm
D
1 ppm and 50 ppm
Answer
50 ppb and 1 ppm
Explanation
Solution
As per International Standards, the tolerable limits of lead and fluoride in drinking water are 50 ppb and 1 ppm respectively.