3. Which of the following size of particulate matter causes greater harm to human health
a. 2.5 micrometer in diameter
c. 4.5 micrometer in diameter
ulote matter in thermal power
b. more than 2.5 micrometer in diameter
d. more than 4.5 micrometer in diameter
Answers
Answer:
c. 4.5 micrometer in diameter
ulote matter in thermal power
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Answer:
(a) 2.5 Micrometer in diameter
Explanation:
Air pollution is smaller in diameter. Diameter is measured in microns. Particulate matter such as smoke and fog are included. Ultrafine particles are the smallest particles. 100 nanometers is the diameter of ultra-small particles. Particles of this size cannot be seen with the naked eye.
In general, particulate air pollution such as soot, mainly fly ash, various types of dust, pollen, spores, fur, hair can be divided into solidifying and fine particulate emissions. the effect of particles on the environment depends on the size of the particles.
According to the Central Pollution Control Board (SAK), the greatest damage to human health is caused by particles with a diameter of 2.5 micrometers or generally smaller than PM 2.5, which are quite significant. These ultrafine particles can generally be inhaled quite deeply into the lungs and can cause respiratory and respiratory symptoms, irritation, inflammation and lung damage, as well as premature death, showing how their impact on the environment depends on particle size. According to the Central Pollution Control Board (SAK), PM 2.5 causes the greatest damage to human health in a subtle way, particles with a diameter of 2.5 micrometers or less.
Therefore, the correct answer is (a) . According to the Central Pollution Control Board (SAK), air pollution particles with a diameter of 2.5 (in micrometers) are the most harmful to human health.
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