Which factor INCREASES the rate of evaporation?
ALowering temperature in standard practice
BDecreasing wind speed
CAdding more impurities
DIncreasing surface area exposed to air
Answer & Solution
Correct answer: D. Increasing surface area exposed to air
1. Evaporation happens at the liquid surface.
2. A larger surface lets more particles escape per second.
3. So increasing surface area raises evaporation.
4. High temperature, low humidity and high wind also speed it up.
_Source: Selina Concise Physics ICSE Class 8, Ch 1 'Matter'_
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