Surface Tension & Capillarity

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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

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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

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18. The phenomenon of capillary rise is used in:

a) Capillary electrophoresis

b) Blood pressure measurement

c) Oil drilling

d) All of the above

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

a) Water

b) Mercury

c) Ethanol

d) Oil

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

a) Surface tension

b) Cohesion

c) Adhesion

d) Viscosity

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