Given below are statements regarding colloids. Identify the correct statement.
1
Based on the nature of the interaction between the dispersed phase and dispersed medium, the colloids are classified into multimolecular colloids, macromolecular colloids, and associated colloids.
2
In multimolecular colloids, the particles have the size in the colloidal range of diameter >1nm.
3
Starch, cellulose, etc. are examples of naturally occurring macromolecular colloids.
4
Bredig's arc method is one of the chemical methods to prepare colloids.