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Civil Engineering Mcqs

For detecting the nitrites in the sewage, the matching colour may be developed by adding_________________?

 (A)  Potassium permanganate

 (B)  Sulphuric acid and napthamine

 (C)  Phenol-di -sulphuric acid potassium hydroxide

 (D)  None of these

Submitted By :Ali Uppal

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