Chemistry - Environmental Chemistry Question with Solution | TestHub

Question Explanation:

Matching pollutant concentrations with standard limits.

Concept:

This question is based on water pollution standards.

Solution:

(A) The BOD of polluted water is typically high, and a value of 17 ppm indicates highly polluted water (Q).

(B) The recommended concentration of lead $(\mathrm{Pb})$ in drinking water is $50\mathrm{ppb}(\mathrm{S})$.

(C) The recommended concentration of sulphate in water is less than $500\mathrm{ppm}(\mathrm{P})$.

(D) The recommended concentration of nitrate in drinking water is $50\mathrm{ppm}(\mathrm{R})$.