Particle size which can easily go into the interior of lung and reache alveoli is:: (A) 0.5 - 3 im, (B) 3-5 im, (C) 5-10 im, (D) 10-15 im
Answer is A. Ans: a (0.5-3 im) Ref: Park, 19th ed,p. 661Particle between 0.5-3 microns are the most dangerous because they reach the interior of the lungs with ease.