Question

The liquid that does not wet the solid surface has an ______ angle of contact.

• A. Obtuse
• B. Acute
• C. 90^o
• D. 60^o

Answer 1

The correct option is A

Obtuse

When liquid molecules are attracted strongly to themselves and weakly to those of solids, it costs lots of energy to create liquid-solid surface and liquid then does not wet the solid.