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: Social & Preventive Medicine
[{'content': 'The electrostatic precipitator are used in the prevention of- \nSelect and explain. \nA. Radiation risks, B. Air pollution emissions, C. Mosquito nuisance, D. Diffuse vibrations', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Air pollution emissions Dcv ices commonly used as air pollution control device :? Mechanical collector (dust cylones, Multicylones) Electostatic precipitators Baghouses Paiculate scrubbers.", 'role': 'assistant'}]