The process of coagulation is a result of the dominance of:
Repulsive forces between colloidal particles
Attractive forces between colloidal particles
Hydrogen bonding in the colloid
Dipole-dipole interactions in the colloid
Coagulation occurs when the attractive forces between colloidal particles dominate over the repulsive forces, causing them to come together and form aggregates.
Hence option 2 is correct.
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