Q.
Mercury does not wet glass, wood or iron because
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a
Cohesive force is less than adhesive force
b
Cohesive force is greater than adhesive force
c
Angle of contact is less than 90o
d
Cohesive force is equal to adhesive force
answer is B.
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Detailed Solution
The glass rod is not wet when dipped in mercury because; the cohesive force of mercury molecules is more than the adhesive force between glass and mercury molecules
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