Which of the following toxic materials was present in Minamata bay of Japan?

Which of the following are toxic?

Which of the following is most toxic ?

Which of the following is most toxic ?

Which one of the following particulates is most toxic?

Which of the following metal was responsible for Minamata disease that caused several deaths in Japan and Sweden ?

Which of the following pollutants in water causes 'Minamata' discase?

Which one of the following is the heavy toxic metal present in waste water from industries?

Which of the following systems is affected by "Minamata disease"?

Which of the following toxicity cause precipation of nucleic acid.