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
White vitrol is ? 
Select and explain. 
A. Magnesium hydroxide, B. Magnesium chloride, C. Zinc sulfate, D. Zinc chloride
C: Zinc sulfate
Answer: C: Zinc sulfate 
Explanation: Ans. is 'c' i.e.,Zinc sulfate Zinc sulfate Irritant - White vitriol (Astringent)Zinc chloride Corrosive - Butter of zinc (Astringent)Zinc phosphide Rodenticide - Rat poison