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Question

If for liquid in a vessel, force of cohesion is twice of force of adhesion, then


A
the liquid will wet the solid
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B
the liquid will not wet the solid
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C
the meniscus will be convex upwards
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D
the angle of contact will be obtuse
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Solution

The correct options are
B the meniscus will be convex upwards
C the liquid will not wet the solid
D the angle of contact will be obtuse
As force of adhesion determines the waitability of liquid and force of cohession represents the bonding between molecules of liquid. If force of cohession becomes move then liquid will not stick to the walls of container due to strong bonding between itself. The miniscus will be convex upward resulting the angle of contact more than $${ 90 }^{ 0 }$$.

Physics

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