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Why is it risky to cover an incorrect poster colour before it dries completely?

Answer and explanation

Correct answer: The wet lower paint may lift and mix into the new layer

The governing concept is drying between paint layers. When the lower poster-colour layer is still wet, brush pressure and moisture can lift it from the surface and mix it into the corrective layer. The result may be muddy, patchy or unintentionally altered colour, making a clean correction difficult. Uneven gloss, softer brush bristles and white paper are not the main risks. Therefore, option D is correct.

Related tags

Paint DryingLayeringColour MixingPoster ColourPainting TechniquesArt EducationClass 9 Mcq

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