Antidote for cyanide poison is: March 2012: (A) Sodium bicarbonate, (B) Sodium chloride, (C) Sodium thiosulphate, (D) All of the following
Answer is C. Ans: C i.e. Sodium thiosulphate Cyanide is directly conveed to thiocyanate (non-toxic; excreted in the urine) by the complexing of cyanide with thiosulphate under the influence of the enzyme rhodanase.