A) mercury rises in the capillary tube
B) mercury rises and flows out of the capillary tube
C) mercury descends in the capillary tube
D) mercury neither rises nor descends in the capillary tube
Correct Answer: C
Solution :
The angle of contact is greater ie, \[{{139}^{o}}\]in case of mercury and cohesive force is more than adhesive force between the molecules of Hg. So, mercury will descend in capillary tube.
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