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
The electrostatic precipitator are used in the prevention of- 
Select and explain. 
A. Radiation risks, B. Air pollution emissions, C. Mosquito nuisance, D. Diffuse vibrations
B: Air pollution emissions
Answer: B: Air pollution emissions 
Explanation: 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.