Hexamethylene tetramine serves as a hardener for ________(a) Cellulose(b) Polystyrene(c) Polyvinylchloride(d) Phenol formaldehydeThis question was addressed to me at a job interview.I'm obligated to ask this question of Plastics in chapter Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials

Hexamethylene tetramine serves as a hardener for ________(a) Cellulose

1.	Hexamethylene tetramine serves as a hardener for ________(a) Cellulose(b) Polystyrene(c) Polyvinylchloride(d) Phenol formaldehydeThis question was addressed to me at a job interview.I'm obligated to ask this question of Plastics in chapter Steel, Timber, Mortar, Plastics, Non-Ferrous Metals and Alloys of Construction & Building Materials
Answer» CORRECT answer is (d) PHENOL formaldehyde The best explanation: HEXAMETHYLENE tetramine serves as a hardener for phenol-formaldehyde. A hardener is a compound that is used to increase the HARDNESS of resins.

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