Pulp and Paper MCQ Set 1 1. _________are surface-active agents that aggregate near or have a strong effect on modifying the interface b/w 2 materials. a) Carboxylate b) Tween c) Ampholytic elements d) Surfactants AnswerAnswer: d [Reason:] This occurs because of their dual nature: hydrophobic and hydrophilic. It’s a substance which tends to decrement the…