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: Pathology
[{'content': 'Which of these is irritating for skin so not used as disinfectant for skin preperarions \nSelect and explain. \nA. Chlorhexidine, B. Hypochlorite, C. Alcohol, D. Cyclopropane', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sodium hypochlorite is corrosive & irritative to skin can cause chemical burns if applied to skin directly; so not used as skin disinfectant.\nSodium hypochlorite it is a powerful disinfectant used for dairy.\nIt is unstable and too irritating to be used as antiseptic, except for RCT in dentistry.\nIn high concentration, hypochlorite becomes unsafe, hence may be marked as answer of choice\n\nAlcohols\n\nThey act on bacteria, fungi, some enveloped virus (like HIV); but not spores.\nThey act by denaturing proteins and possibly by dissolving membrane lipids.\nEthyl alcohol is used as surgical spirit (70%) in hand rubs as antiseptics.\nIsopropyl alcohol: Used for clinical thermometers.\n\nGlutaraldehyde: Used as 2% concentration (2% cidex) for 20 min\nChlorhexidine: It is an active ingredient of savion (chlorhexidine and cetrimide)\nChloroxylenol: It is an active ingredient of dettol', 'role': 'assistant'}]