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Why can a thick acrylic layer cause varnishing problems even when it looks dry on the surface?

Answer and explanation

Correct answer: Moisture or incomplete curing may remain inside

The governing concept is the difference between surface drying and complete curing. A thick acrylic film may form a dry skin while moisture or an incompletely stabilised layer remains underneath. If varnish is applied too soon, the coating can become cloudy, tacky or otherwise unstable. Option D is correct because it identifies the hidden internal condition; metallic paint, water released by canvas and brighter highlights do not explain the problem.

Related tags

Acrylic ColourThick LayerCuringPainting TechniquesArt EducationClass 9 Mcq

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