Question

What concentration of iron and manganese will cause unpleasant taste and odor of water?

(a) 1ppm

(b) 2ppm

(c) 3ppm

(d) >3ppm

I got this question in unit test.

I want to ask this question from Removal of Iron, Manganese, Colour, Odour and Taste in division Miscellaneous Treatment Methods of Environmental Engineering

Answer 1

Right option is (d) >3ppm

To explain: When the concentration of iron and manganese is greater than 3, it will result in unpleasant taste and odor, unwanted precipitation and difficulties in manufacturing processes.