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On what basis is the main exam-worthy difference between fog and mist made?

Answer and explanation

Correct answer: Intensity of reduction in visibility

Correct answer: A, intensity of reduction in visibility. Fog and mist are both made of very small water droplets suspended near the ground. The practical and exam-oriented distinction between them is the degree to which they reduce visibility. Fog is denser and reduces visibility more strongly, whereas mist is generally thinner and allows comparatively better visibility. Option A is correct because it directly identifies this visibility-based distinction. Option B is wrong because sea salt may help provide condensation nuclei in some environments, but salt content is not the defining difference between fog and mist. Option C is unrelated to atmospheric condensation; rock hardness belongs to geology. Option D concerns earthquakes and has no role in distinguishing these two forms of suspended moisture. Memory cue: fog is the thicker “visibility blocker,” while mist is the lighter form. Do not confuse this with dew, which forms on a surface rather than remaining suspended in the air.

Related tags

FogMistVisibilityCondensationForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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