alleryWaterproofing agents are added to create a large:
AAmount of surface
BVolume of liquid
CWeight of fabric
DAngle of contact
Answer & Solution
Correct answer: D. Angle of contact
1. Waterproofing has to keep water from spreading on the fibres.
2. A large angle of contact stops the liquid from wetting them.
3. So these agents work by raising the angle of contact.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._
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