Chemistry - Environmental Chemistry Question with Solution | TestHub

Concentration of DO below $6\mathrm{ppm}$ is good for the growth of fish

Clean water would have a BOD value of less than $5\mathrm{ppm}$

Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant

$\mathrm{pH}$ of drinking water should be between $5.5-9.5$