Question

17. Most effective coagulant for a colloidal solution of
arsenic sulphide in water
(1) 0.1 M Sodium phosphate
(2) 0.1 M Zinc sulphate
(3) 0.1 M Zinc nitrate
(4) 0.1 M Aluminium chloride ​

Answer 1

Answer:

4) 0.1 aluminum chloride