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Why is it necessary to clean the brush before mixing colours?

Answer and explanation

Correct answer: To avoid unwanted colour mixing

The governing concept is maintaining colour purity during practical work. Paint left in the bristles can enter the next colour and change its hue, value, or brightness unexpectedly. Therefore, cleaning the brush before taking another colour prevents unwanted mixing, making option A correct. A clean brush does not make the brush heavy, dry paint faster, or polish the paper; those choices describe unrelated effects.

Related tags

Clean BrushColour MixingPainting ToolsPure ColoursArt PracticeColour TheoryArt EducationClass 9 Mcq

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