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A large flat area appears even while wet but develops dark rims at the edges after drying. What is the most precise cause?

Answer and explanation

Correct answer: Accumulation of pigmented water at the edges

The governing principle is pigment movement during drying. If wash water collects at the boundaries, evaporation leaves a greater concentration of pigment there, producing a darker rim even though the wet area initially looks uniform. Option A precisely identifies this pooling effect. A short handle, light paper, or the name of the colour does not cause edge darkening. The problem can be reduced by controlling the wash, avoiding excess liquid, and lifting pools before they dry.

Related tags

Edge-DarkeningPigment-PoolingFlat-WashColour-FillingColour Filling And BlendingPainting TechniquesArt EducationClass 9 Mcq

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