Question

If a liquid wets a solid surface, the angle of contact is ________.

• A. $0^o$C
• B. less than ${90}^o$
• C. greater than ${90}^o$
• D. ${90}^o$C

Answer 1

The correct option is B less than ${90}^o$

If a liquid wets a solid surface, the adhesive force b/w liquid and solid surface is more than cohesive force b/w liquid molecules.

So angle of contact is less than ${90}^o$