Q.

Water does not wet an oily glass because 

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a

oil repels water

b

cohesive force of water is greater than adhesive force between water and oil molecules

c

cohesive force of oil is greater than adhesive force between oil and glass

d

cohesive force of oil is greater than cohesive force of water

answer is D.

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Detailed Solution

Water does not wet an oily glass, because of, Cohesive force for water > adhesive force between water and oil molecules.

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