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Water remains as drops on the polythene ...

Water remains as drops on the polythene surface but, it forms a thin layer on the surface of a properly cleaned glass plate. Explain.

Text Solution

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(i) Cohesive, adhesive forces.
(ii) Composition of polythene.
(iii) Composition of glass.
(iv) Forces between water and polythene.
(v) Forces acting between water and glass.
(vi) Comparison of these forces.
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