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What is a likely cause if dark edges form on watercolour paper?

Answer and explanation

Correct answer: Excess water and pigment collected at the edges of the wash

The governing concept is the drying behaviour of a watercolour wash. If a bead of water carrying pigment remains at the edge, evaporation draws the pigment toward that boundary. After drying, the accumulated pigment forms a darker line, often called a hard or backrun edge. Option D is correct. Very white paper does not cause the effect, and dilution alone is not the decisive problem unless excess liquid is left at the boundary.

Related tags

WatercolourWatercolour WashBackrunDark EdgesPaint ControlPainting TechniquesArt EducationClass 9 Mcq

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