Process of deflouridation of water is -: (A) Nalgonda technique, (B) NINH, (C) Sand filter, (D) Parboiling
Answer is A. The National Environmental Engineering Research Institute,Nagpur developed a technique for removing flouride by chemical treatment.It is called Nalgonda technique for deflourination of water.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-596