This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Brain is presented for study in - 
Select and explain. 
A. 10% formalin, B. 20% formalin, C. 30% formalin, D. 40% formalin
A: 10% formalin
Answer: A: 10% formalin 
Explanation: Ans. is 'a' i.e. 10% formalin 10% formalin is used as preservative for histopathological examination of tissue but not used for poisoning or chemical analysis.