Question
Question: A liquid does not wet the solid surface if the angle of contact is...
A liquid does not wet the solid surface if the angle of contact is
A
(a) Zero
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(b) Equal to 45°
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(c) Equal to 90°
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(d) Greater than 90°
Explanation
Solution
(d) A liquid does not wet the solid surface if the angle of contact is obtuse (i.e. θ=90∘)