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What may cause violet made from red and blue to appear dull?

Answer and explanation

Correct answer: Unwanted yellow contamination

The governing concept is purity of pigment mixtures and complementary contamination. Violet is made from red and blue, while yellow is its complementary colour. If yellow residue enters the mixture, it reduces the saturation of violet and can make it look dull or greyish. Correct amounts of red and blue help create violet, and a clean brush prevents contamination. Thus option A is correct.

Related tags

Dull VioletYellow ContaminationColour MixingPigment PurityColour TheoryArt EducationClass 9 Mcq

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