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What may happen when secondary colours are mixed with a dirty brush?

Answer and explanation

Correct answer: The colour may become muddy

A dirty brush carries residue from an earlier colour into the new mixture. That unwanted pigment changes the intended proportions and can lower the mixture’s purity and brightness, making the secondary colour look muddy. It would not normally become brighter, white, or disappear merely because the brush is dirty. Washing the brush before changing colours helps preserve the expected hue. Therefore option A is correct, and the governing concept is contamination during colour mixing.

Related tags

Colour TheorySecondary ColoursDirty BrushColour MixingArt EducationClass 9 Mcq

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