Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Cloud And Precipitationmedium · 45s
Which process directly changes water vapor into ice crystals?
TopicCloud And Precipitation
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Sublimation is a unique phase change where water vapor bypasses the liquid phase and turns directly into solid ice crystals. This process typically occurs in cold atmospheric conditions where ice crystals form in clouds without first becoming liquid water. Sublimation is important in the formation of certain types of clouds like cirrus, which consist of ice crystals.
Final Answer: Option B - Sublimation