What may happen if temperature falls below freezing after dew has formed?

Correct answer: The dew may freeze to form frozen dew

Correct answer: B. Dew is liquid water that has already condensed and collected on a surface. If the temperature subsequently falls below the freezing point, those liquid droplets can freeze in place, producing frozen dew. The sequence matters: first liquid dew forms, and then the temperature falls enough to freeze it. This is different from frost, in which water vapour deposits directly as ice crystals on a cold surface without first forming liquid dew. Option A is wrong because cooling below freezing does not cause the dew to evaporate; it favours freezing. Option B is correct because it follows the stated sequence. Option C is wrong because freezing is not direct conversion into vapour, and the question describes a surface process rather than cloud formation. Option D is wrong because water does not become salt simply by being absorbed into soil. Memory cue: “Dew first liquid, then frozen; frost forms as ice directly.”