Answer :
Final answer:
Capillary action causes the liquid to rise in the capillary tube when a boiling substance cools.
Explanation:
When a boiling substance cools and the liquid rises in a capillary tube, it is due to a phenomenon called capillary action. Capillary action is caused by the relative strengths of adhesive and cohesive forces.
In this case, the liquid inside the capillary tube, such as water, has a higher surface tension and cohesive forces compared to the liquid outside the tube. The liquid molecules are strongly attracted to the tube molecules, causing the liquid to creep up the inside of the tube until the weight of the liquid and the adhesive forces are in balance.
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