2018 · Q25
Which one of the following is applicable to collision-coalescence process of precipitation?
General KnowledgeGeography
- AClouds which do not extend beyond the freezing level
- BClouds which extend beyond the freezing level
- CAll types of clouds
- DCirrocumulus cloud
Explanation
The collision–coalescence process is the warm-rain mechanism: cloud droplets grow by colliding and merging. It operates in clouds that do not extend beyond the freezing level, where no ice crystals exist. Clouds reaching above the freezing level precipitate mainly through the ice-crystal (Bergeron) process. Hence it applies to clouds which do not extend beyond the freezing level.