Monday, 20 March 2017

Most important route of occupational exposure to lead | Crack AIIMS, NEET 2017 MCQs


The most important route of occupational exposure to lead is: 

A. Ingestion 
B. Absorption 
C. Inhalation 
D. Absorption


Ans. C. inhalation

• Populations are exposed to lead chiefly via paints, cans, plumbing fixtures and leaded gasoline. 

• The intensity of these exposures remains high because of the deterioration of lead paint used into the past and the entrainment of lead from the paint and vehicle exhaust into soil and household. 
• Greatest source of environmental (non-occupational) is gasoline 
• Most common mode of absorption in case of occupational lead poisoning is inhalation of flumes and dust of lead and its compounds