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Why must the surface be clean for acrylic painting?

Answer and explanation

Correct answer: Dust and grease may reduce paint adhesion

The governing concept is adhesion between the acrylic film and its support. Dust, grease, and loose dirt form a barrier, so the paint may spread unevenly, flake, or fail to bond firmly. Cleaning removes that barrier and helps the layer remain even and durable. It is not intended to change the surface colour, enlarge a brush, or use paint faster. Since reduced adhesion is the relevant effect, option B is correct.

Related tags

Acrylic PaintingSurface PreparationPaint AdhesionCleanlinessAcrylic ColourPainting TechniquesArt EducationClass 9 Mcq

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