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What problem may occur if a dirty brush is dipped into a poster-colour container?

Answer and explanation

Correct answer: The original colour may become contaminated

The governing concept is cleanliness of painting materials. A dirty brush can carry leftover pigment, dust, or water into the poster-colour container, changing the original colour and making it muddy or impure. Therefore, option D is correct. Options A and B describe effects that do not follow from a dirty brush, while option C is unrelated to painting. The brush should be washed and excess water removed before collecting fresh colour.

Related tags

Dirty BrushColour ContaminationPoster ColourPaint CareCleanlinessPainting TechniquesArt EducationClass 9 Mcq

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