Nalgonda technique is related to?: (A) Fluorine, (B) Chrlorine, (C) Nitrate, (D) Nitrites
Answer is A. NEERI DEVELOPED A TECHNIQUE FOR REMOVING FLUORIDE BY CHEMICAL DEFLOURIDATION OF WATER CALLED NALGONDA TECHNIQUE. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 596