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A poster colour area dries darker near the edges. What technical problem does this indicate?

Answer and explanation

Correct answer: Pooling of paint or water at the edges

The governing concept is liquid and pigment control. When poster colour or diluted paint collects at the boundary of a painted area, evaporation leaves a higher concentration of pigment there, so the edge dries darker; this is called pooling or an edge-accumulation effect. Therefore A is correct. Proper opacity should produce even coverage, a flat sheet does not concentrate pigment by itself, and a clean brush reduces contamination rather than creating a dark border. Remove excess liquid gently before drying.

Related tags

Poster ColourEdge PoolingPigment ConcentrationEven CoveragePainting TechniquesArt EducationClass 9 Mcq

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