Surface Tension & Capillarity

16. The meniscus of water in a glass capillary tube is:

a) Concave

b) Convex

c) Flat

d) Depends on the diameter of the tube

17. The meniscus of mercury in a glass capillary tube is:

a) Concave

b) Convex

c) Flat

d) Depends on the diameter of the tube

18. The phenomenon of capillary rise is used in:

a) Capillary electrophoresis

b) Blood pressure measurement

c) Oil drilling

d) All of the above

19. Which of the following substances has the highest capillary rise?

a) Water

b) Mercury

c) Ethanol

d) Oil

20. The capillary rise in a tube is inversely proportional to:

a) Surface tension

b) Cohesion

c) Adhesion

d) Viscosity