Home » Chemistry mcqs » The water after removing of sludge in the biological oxidation process is treated with ____________The water after removing of sludge in the biological oxidation process is treated with ____________ by a) Chlorine b) Bromine c) Fluorine d) Iodine Related Posts:Which of the following is the correct sequence in…Percentage of water in brain cells is_______?Breakdown of large molecules into smaller ones…