Which of the following plays an important role in causing rainfall?
ABoth evaporation and condensation
BOnly the evaporation of surface water
COnly the condensation of water vapour
DOnly the filtration of the air
Answer & Solution
Correct answer: A. Both evaporation and condensation
1. Evaporation lifts water vapour from the surface into the atmosphere.
2. Condensation turns that vapour into droplets that form clouds.
3. Both steps are needed for rainfall, so the answer is both.
_Source: RRB Group D (RRC) PYQ, held 27-10-2013, Q.46._
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