Lead exposure can cause all of the following except:
A) skin burns
B) Kidney damages
C) Brain damage
D) Sterility
These types of contaminants can result from welding, cleaning, or painting
A) Radiation
B) Particulate
C) Laser
D) Gas or Vapor
The Correct Answer and Explanation is :
Correct Answers:
- A) Skin burns
- D) Gas or Vapor
Explanation
1. Lead Exposure
Lead is a toxic heavy metal with widespread environmental and occupational exposure risks. Chronic exposure to lead can cause serious health issues, including:
- Kidney damage: Lead impairs kidney function and can lead to nephropathy, causing long-term damage to the renal system.
- Brain damage: Lead exposure, especially in children, can result in neurotoxicity, manifesting as cognitive deficits, behavioral problems, and developmental delays. In adults, it can cause memory loss and mood disorders.
- Sterility: High levels of lead can impair reproductive function in both men and women. It interferes with hormonal regulation and can reduce sperm count and quality.
Skin burns, however, are not typically caused by lead exposure. Skin irritation may occur if lead compounds are directly contacted, but burns are more characteristic of exposure to corrosive substances like strong acids or bases.
2. Contaminants from Welding, Cleaning, or Painting
During activities like welding, cleaning, or painting, various contaminants can be released into the air, including:
- Gas or vapor: Common examples are fumes from welding (e.g., metal oxides), solvent vapors from paints or cleaners, and potentially toxic gases like carbon monoxide or nitrogen oxides.
- Radiation: While ultraviolet radiation is a hazard during welding, it is not a contaminant.
- Particulate: Welding may generate metal particulates, but these are distinct from gases or vapors.
- Laser: Lasers are tools used in certain applications, not typically associated with these processes.
Gas or vapor contaminants are the most relevant and hazardous in these activities due to the release of volatile organic compounds (VOCs), toxic fumes, and asphyxiants that can harm respiratory and systemic health.