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What problem may occur when warm and cool colours are picked repeatedly with the same unwashed brush?

Answer and explanation

Correct answer: Colours may become contaminated and muddy

The governing concept is colour contamination during painting. When a brush still contains warm paint and is dipped into a cool colour, the leftover pigment mixes into the new colour and reduces its clarity. Repeating this without washing transfers both pigments, so the mixture can become dull, greyish, or muddy. Therefore option A is correct. The other options describe effects that do not result from an unwashed brush.

Related tags

Colour ContaminationBrush CleaningPoster ColourPainting TechniquesArt EducationClass 9 Mcq

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