A hydrophobic surface with low free surface energy gives a ____________ with water.
A. Low contact angle
B. High contact angle
C. Zero contact angle
D. Extremely low contact angle
Answer:B
A hydrophobic surface with low free surface energy gives a ____________ with water.
A. Low contact angle B. High contact angle C. Zero contact angle D. Extremely low contact angle
Explanation: A hydrophobic surface with low free surface energy gives a high contact angle with water.