Which of the following is not a method of entrapment?

Which of the following is not a method of entrapment? Correct Answer Diazotization

Diazotization is a method of covalent bonding of immobilization. Inclusion in gels, fibers, and microcapsules are the methods of entrapment which involves trapping of cells/enzymes in gels, fibers, and microcapsules respectively.

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