This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Microbiology (Sterilization and Bacterial Genetics), Subject name: Microbiology
[{'content': 'Disinfectant used to disinfect blood spills in hospital floors? \nSelect and explain. \nA. Phenol, B. Quaernary ammonium compound, C. Alcohol, D. Chlorine based compounds', 'role': 'user'}, {'content': 'Answer: D \nExplanation: MOA of halogens: oxidation of essential sulfhydryl groups of enzymes. Use of Chlorine compounds: * Chlorine tablets are used for water disinfection(water supplies, swimming pools) * Household bleach (5-6 % sodium hypochlorite) - used to disinfect floors in a stock dilution of 1: 10 in water and infectious spills. Use of Iodine compounds * Tincture of iodine (2% iodine in 70% alcohol): used as an antiseptic. * Iodophor- Iodine coated onto a neutral carrier molecules like polyvinylpyrrolidone for slow release and less irritation.Eg. Betadene.', 'role': 'assistant'}]