The coating used on raincoats is waterproof because ___.

the water is absorbed by the coating

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it increases the cohesive forces

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it increases the adhesive forces

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it reduces the adhesive forces

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Solution

The correct option is D
it reduces the adhesive forces

The coating used on raincoats is waterproof because, it reduces the adhesive force between the coating material and water particles. Consequently, cohesive forces dominate and water particles combine among themselves leaving the raincoat dry.

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