Waste Water Engineering

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

  • A. Potassium permanganate
  • B. Sulphuric acid and napthamine
  • C. Phenol-di -sulphuric acid and potassium hydroxide
  • D. None of these
Answer: Option C.

No answer description available for this question.

Leave a Reply

Your email address will not be published.

Back to top button
error: Alert: Content is protected !!