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Why should a clean brush be used while mixing tertiary colours?

Answer and explanation

Correct answer: To prevent unwanted colour contamination

A clean brush prevents leftover pigment from a previous colour from entering the new mixture. This preserves the intended hue, clarity and proportion of the tertiary colour, so option B is correct. A clean brush does not automatically darken paint, dry paper or lengthen bristles. Rinsing the brush and removing excess water before taking another colour helps maintain accurate, controlled mixing.

Related tags

Tertiary ColoursColour MixingBrush CleanlinessColour ContaminationArt EducationColour TheoryClass 9 Mcq

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