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Angle of contact of water proofing agent are generally
  • a)
    large
  • b)
    small
  • c)
    less then 200
  • d)
    Can be either large or small
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Angle of contact of water proofing agent are generallya)largeb)smallc)...
Generally, if the water contact angle is smaller than 90DEG, the solid surface is considered hydrophilic and if the water contact angle is larger than 90DEG, the solid surface is considered hydrophobic.
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Angle of contact of water proofing agent are generallya)largeb)smallc)...
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Angle of contact of water proofing agent are generallya)largeb)smallc)...
The angle of contact

When a liquid surface meets a solid surface the angle (f) between the two surfaces is important. ... In fact a surface will be wetted by water if the angle of contact is less than 90o, and so waterproofing is designed to produce an angle of contact that is greater than 90o.
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