This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMT Q Bank, Subject name: Forensic Medicine
Chocolate brown hypostasis is seen in all poisoning except: 
Select and explain. 
A. Hydrogen sulphide, B. Aniline, C. Nitrites, D. Potassium chlorate
A: Hydrogen sulphide
Answer: A: Hydrogen sulphide 
Explanation: PM hypostatis or lividity or PM Staining-settling down of blood in dependant pas due to gravity. It is used to detect time since death, position of body, cause of death. Normal color-bluish,purplish CO poisoning- cherry red CN poisoning- brick red H2S poisoning- bluish red Chocolate brown: potassium chlorate aniline nitrites