Question

Fine particles less than _______ size causes lung damage and more than _______ size are trapped in nose and throat​

Answer 1

Answer:

a) PM 2.5 b) PM10

Explanation:

a) Particles in the PM2.5 size range are able to travel deeply into the respiratory tract, reaching the lungs.

b) In general, particles having an aerodynamic diameter of greater than 10 µm are deposited in the nasopharyngeal region (upper airway passages - nose, nasal cavity and throat) largely by impaction.

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Answer 2

Fine particles less than 10 micrometers (µm) in size causes lung damage and more than 2.5 micrometers µm size are trapped in nose and throat​

Explanation:

• The main problems are particles with a diameter of 10 micrometres or less. These tiny particles typically enter the nose & throat and go into the lungs. These particles can, once inhaled, cause respiratory diseases and inflict significant impacts on the health of those at greater risk, such as persons with cardiopathic or pulmonary disease, diabetes sufferers, the elderly and children (upto 18 years of age). More particulate matter (> 10 μm) is less significant since they do not generally reach the lungs, though the skin, the nose, and the throat can still be irritated.

Particles of concern can be grouped into two main categories:

1. Coarse particulate matter : the particles are greater than 2.5 microns and smaller than 10 microns in diameter, or equal to.
2. Fine particulate matter: Particles with a diameter of 2.5 μm or less. This particle category also contains ultrafine and nanoparticles that are usually less than 0.1 μm in diameter.

To know more

harmful effects of air pollution - Brainly.in

https://brainly.in/question/2563087