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Why is it necessary to clean the surface before applying a new layer over dried acrylic paint?

Answer and explanation

Correct answer: Dust may reduce the adhesion of the new layer

Layering depends on adhesion between the prepared surface and the fresh acrylic film. Dust, grease, or loose particles form a weak boundary, preventing the new layer from bonding evenly; it may later flake or separate. Therefore, option A is correct. Cleaning does not automatically change colour, lengthen a brush, or make paint transparent. The surface should be clean and dry before repainting.

Related tags

Acrylic AdhesionSurface CleaningLayeringPaint PreparationAcrylic ColourPainting TechniquesArt EducationClass 9 Mcq

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