Waste Water Engineering
For detecting the nitrates in sewage, the colour may be developed by adding

None of these
Sulphuric acid and napthamine
Phenol-di -sulphuric acid and potassium hydroxide
Potassium permanganate

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
For treating the sewage of a large city, you will recommend

None of these
A sedimentation tank and an activated sludge treatment plant
Sedimentation tanks with high rate trickling filters
A plant consisting of Imhoff tanks with low rate trickling filters

ANSWER DOWNLOAD EXAMIANS APP