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: Microbiology
[{'content': 'Rideal-Walker coefficient is related with ? \nSelect and explain. \nA. Disinfecting power, B. Parasitic clearance, C. Dietary requirement, D. Statistical correlation', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Disinfecting power Traditional testing of disinfectants Two traditional tests for determining the efficiency of disinfectants are :? 1) Rideal-Walker test : Phenol is taken as the standard with unit as phenol coefficient (pheno1=1) 2) Chick-Main test : The disinfectant acts in the presence of organic matter (dried yeast or feces).", 'role': 'assistant'}]