CTET PAPER I 2018 · PYQ · Water / Evaporation · easy
Under which of the following conditions will the process of evaporation be slowest?
A.Both surface area and temperature increase
B.Surface area increases but temperature decreases
C.Surface area decreases but temperature increases
D.Both surface area and temperature decrease✓ Correct
Explanation
Evaporation rate increases with both higher surface area (more molecules exposed) and higher temperature (more kinetic energy). For evaporation to be slowest, both factors must be minimized — i.e., both surface area and temperature should decrease.
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