Question

According to the Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm to human health?

• A. 3.5 micrometers
• B. 2.5 micrometers
• C. 4.0 micrometers
• D. 3.0 micrometers

Answer 1

The correct option is B 2.5 micrometers

According to the Central pollution control board (CPCB), particulate matter having a size of 2.5 micrometers or less is extremely harmful for human health.

This is because these particles can easily pass through the respiratory tracts during inhalation of polluted air and can get lodged in the lungs causing irritation, inflammation, respiratory infections and breathing difficulties.