Fatal dose of KCN is ?
Ans. is 'd' i.e., 280 - 300 mg Fatal dose of hydrocyanic acid in the pure form is 50 - 60 mg while as sodium or potassium cyanide is 200 - 300 mg.
50 - 60 mg
120 -130 mg
180 -190 mg
280 - 300 mg