Artificial rain is caused by spraying salt over clouds
Asked by admin @ in Chemistry viewed by 363 People
Artificial rain can be caused by spray common salt on the clouds. How?
Answered by admin @
Clouds are colloidal dispersion of water particles in air. These water particles carry some charge over them. On spraying oppositely charged colloidal dust or sand particles over a cloud from an aeroplane, the colloidal water particles present in the cloud will get neutralized and as a result they will come closer and will grow in size to form bigger water drops and ultimately will coagulate or precipitate causing artificial rain.
[Coagulation is the process of aggregating together the colloidal particles so as to change them into large sized particles which ultimately settle as a precipitate.]
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