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Why is it necessary to use a clean brush while mixing colours?

Answer and explanation

Correct answer: To avoid unwanted colour mixing

The governing concept is colour purity and control during painting. A brush carrying traces of an earlier colour can introduce an unwanted pigment into the next mixture, changing its hue, value or intensity. Washing and wiping the brush before using another colour prevents this contamination, so option A is correct. A clean brush does not make the brush heavier, speed drying, or alter the thickness of the paper.

Related tags

Clean BrushColour PurityColour MixingPainting TechniqueColour TheoryArt EducationClass 9 Mcq

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