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
Most common mode of lead poisoning 
Select and explain. 
A. Ingestion, B. Dermally, C. Inhalation, D. Through conjuctiva
C: Inhalation
Answer: C: Inhalation 
Explanation: Ans. is 'c' i.e., Inhalation Lead poisoning (plumbism) may occur in 3 ways : ? 1) Inhalation - Most cases of industrial lead poisoning is due to inhalation of fumes and dust of lead or its compounds. 2) Ingestion - Small quantities of lead trapped in the upper respiratory tract may be ingested. Contaminated hands may also lead to ingestion. 3) Skin - Only organic lead (e.g., tetraethyl lead) is absorbed dermally.