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The contact angle between a liquid and a solid surface is minimum when:
  • a)
    There is no adhesion between the liquid and the solid
  • b)
    There is complete wetting of the solid by the liquid
  • c)
    The liquid spreads out completely on the solid surface
  • d)
    None of the above
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The contact angle between a liquid and a solid surface is minimum when...
The contact angle between a liquid and a solid surface is minimum when there is complete wetting of the solid by the liquid. Adhesion dominates over cohesion.
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The contact angle between a liquid and a solid surface is minimum when:a)There is no adhesion between the liquid and the solidb)There is complete wetting of the solid by the liquidc)The liquid spreads out completely on the solid surfaced)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
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