(a) Greater than (b) Less than 90° (c) Equal to 90° (d) Equal to 0° Ans. a
1. A liquid does not wet the sides of a solid, if the angle of contact is
(a) Zero (b) Obtuse (More than 90°) (c) Acute (Less than 90°) (d) 90° Ans. b
2. Due to capillary action, a liquid will rise in a tube, if the angle of contact is
(a) Acute (b) Obtuse (c) 90° (d) Zero Ans. a