Question

Which of the following is the most toxic air pollutant?

• A. Arsenic
• B. Asbestos
• C. Benzene
• D. Potassium chloride

Hint:

Asbestos fibers are extremely dangerous when inhaled—linked to lung diseases and cancers, making it a highly toxic air pollutant.

Answer 1

The Correct Option is B

Concept: Air pollutants vary in toxicity depending on their impact on human health, especially the respiratory system. Step 1:Understand asbestos.
Asbestos is a highly toxic air pollutant because:

• Its fine fibers are easily inhaled
• It causes serious diseases like asbestosis, lung cancer, and mesothelioma
• Effects are long-term and often irreversible

Step 2:Evaluate other options.}

• Arsenic $\rightarrow$ Toxic but mainly affects water/soil
• Benzene $\rightarrow$ Harmful but less hazardous than asbestos fibers in air
• Potassium chloride $\rightarrow$ Not a toxic air pollutant

Final Answer: \[ {\text{Asbestos}} \]