Question

Of the following, which one is not a characteristic of dispersion aerosols (explain)? (a) They are most readily carried into the alveoli of lungs, (b) They are usually above 1 micrometer in size (c) They are relatively easier to remove. (d) They are generally less respirable. (e) They are provided when bulk materials (larger particles) are ground up or subdivided.

Answer 1

Dispersion aerools are usally fine solid or liquid particle suspended in the air or gas .The different types of aerosols include Gels, Emulsions etc.They are usually above 1 micrometer in ize and hence, generally less respirable and do not readily enter the alveoli of lungs.Owing to the charge on these fine particle, they tend to stick to ground and can be easily removed. These are typically formed when bulk material are subdivided.Therefore, the answer is a.