Artificial rain is caused by spraying salt over clouds. – InterviewSolution

InterviewSolution

1.	Artificial rain is caused by spraying salt over clouds.
Answer» 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.

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