<prompt> NALGONDA technique is used in -Enedmic-fluorosisEpidemic-dropsyEndemic-ascitesNeurolathyrism  <response>: The National Environmental Engineering Research Institute Nagpur developed a techniwue for removing flouride by chemical treatment. it is called Nalgonda techniqueREF.PARKS TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-596 