Question

Which of the following process is responsible for the formation of delta at a place where rivers meet the sea?

• A. Emulsification
• B. Colloid formation
• C. Coagulation
• D. Peptisation

Answer 1

Answer: (C)

Coagulation

• The process of settling of colloidal particles is called coagulation or precipitation of the sol.
  
• River water is a colloidal solution of clay. Seawater contains a number of electrolytes. When river water meets the sea water, the electrolytes present in seawater coagulate the colloidal solution of clay resulting in its deposition with the formation of a delta.