Multiple choice

Which one of the following statements is correct? Collision-coalescene-process of precipitation is applicable to

  1. clouds which extend beyond freezing level

  2. all types of clouds

  3. cumulo-nimbus clouds

  4. those clouds which do not extend beyond the freezing level
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A Correct answer
Explanation

The collision-coalescence process is applicable to clouds which extend beyond the freezing level (warm clouds). In this process, larger water droplets fall faster and collide with smaller droplets, merging to form even larger drops that eventually fall as rain. This process operates primarily in the warm portion of clouds above the freezing level, unlike the ice crystal process that dominates in colder clouds.

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