Rosin soap is added during paper manufacture to____________________?
Correct answer: C. Impart resistance to penetration by liquids
- A. Impart adhesive properties
- B. Improve opacity
- C. Impart resistance to penetration by liquids
- D. None of these
Explanation
Rosin soap is used for sizing paper, making the fibres less readily wetted and therefore more resistant to penetration by water and other liquids. Opacity is mainly improved with mineral fillers, not rosin soap.
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