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Physics Chemistry

Entry Test MCQ :: Environmental Chemistry

  The main pollutant of leather tanneries in the waste water is
[A]. chromium III[B]. chromium IV
[C]. chromium V[D]. chromium VI

Answer: Option B

nadir niazi said:    
d is correct answer

Mubashar Malik said:    
d is correct answer

Syeda Rida Rizvi said:    
series of mcat books seem to have answered b while the correct answer acc to text books is d, Chromium 6.

abdullah qaiser said:    
d is correct

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