Social & Preventive Medicine 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 💡 Explanation Particle size which can easily go into the interior of lung and reache alveoli is: ✓ Correct Answer: A. 0.5 - 3 im