12.      What is responsible forcapillary action, a property of liquids?
a)Â Â Â Â Â Â Â Â surfacetension
b)Â Â Â Â Â Â Â Â cohesiveforces
c)Â Â Â Â Â Â Â Â adhesiveforces
d)Â Â Â Â Â Â Â Â viscosity
e)Â Â Â Â Â Â Â Â two ofthese
32. Which of the following correctly states the relationshipbetween temperature and the solubility of a substance in water?
a) The solubility of a substance in water increases as thetemperature rises, especially for gases. b) The solubility of asubstance in water decreases as the temperature rises, especiallyfor ionic solids. c) The solubility of a substance in water withtemperature cannot be accurately predicted, especially for ionicsolids. d) The solubility of a substance in water decreases as thetemperature lowers, especially for gases. e) Both A and D arecorrect.
