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What similarity exists between atmospheric dust and sea-salt particles?

Answer and explanation

Correct answer: Both can act as condensation nuclei

Direct answer: B is correct. Atmospheric dust and sea-salt particles are aerosols, meaning tiny solid or liquid particles suspended in air. When moist air cools to saturation, water vapour can collect on suitable aerosol surfaces. Such particles are called condensation nuclei and help cloud droplets form. Sea-salt particles may enter the air from breaking waves and sea spray, while dust can be lifted from dry land, but both can serve a similar role in cloud formation. A is wrong because these particles do not come only from fireballs. C is wrong because they do not convert oxygen into nitrogen. D is wrong because both can enter and remain suspended in the atmosphere. Thus B identifies their important similarity. A useful caution: condensation nuclei help condensation, but their presence alone does not guarantee rainfall.

Related tags

Atmospheric DustSea-Salt AerosolsCondensation NucleiCloud FormationGeographyClass 11Lettering And NumberingIntroduction To Engineering Drawing

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