If water vapour first condenses as liquid on a cold surface and then freezes, what may the result be called?

Correct answer: Frozen dew

Answer: B, frozen dew. The wording gives the sequence clearly: water vapour first changes into liquid water on a cold surface, producing dew, and that liquid layer subsequently freezes. The resulting deposit may be called frozen dew or frozen dew deposit. This differs conceptually from frost formed by direct deposition of water vapour as ice crystals, although both can appear white and icy. Option A is incomplete or wrong for the final state because ordinary dew refers to liquid droplets that have not frozen. Option C is wrong because sea mist is suspended moisture over or near a water body, not a frozen deposit on a land surface. Option D is not a recognised description of this process; dust and rainfall are unrelated here. The important examination clue is the order of changes: vapour to liquid, then liquid to solid. Memory cue: dew that freezes becomes frozen dew; direct vapour-to-ice deposition is frost.