According to the Central Pollution Control Board, the diameter of particles that are responsible for causing great harm to human health is:
According to the Central Pollution Control Board, the diameter of particles that are responsible for causing great harm to human health is:

a. 2.5-micrometre

b. 5.0-micrometer

c. 10.0-micrometer

d. 7.5 micrometre

Answer: a. 2.5-micrometre

Explanation: An issue that causes air pollution is categorized into a stable (greater than 10) and suspended (less than 10). According to the Central Pollution Control Board, particles of 2.5 and subconscious are very dangerous to human health as they can extend to the depths of the lungs causing respiratory and respiratory problems.