Fatal close of potassium cyanide is?: (A) 5 mg, (B) 10 mg, (C) 20 mg, (D) 200 mg
Answer is D. 200 mg REF: Textbook Of Forensic Medicine and Toxicology: Principles and Practice by Vij page 695 Fatal dose of cyanide: HCN gas - 100-200 ppm in air HCN liquid- 50-60 mg KCN, NaCN- 150-300 mg (200 mg as per Parikh)