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Why is it necessary to keep the rim of an acrylic paint container clean?

Answer and explanation

Correct answer: To close the lid properly and prevent the paint from drying out

The governing concept is protection of acrylic paint from air. Acrylic dries quickly, and dried paint on the rim can prevent the lid from forming an airtight seal. Air entering through the gap makes the remaining paint thicken or dry. Therefore, option C is correct: a clean rim allows the lid to close tightly. Option A concerns only the label, while B and D do not affect storage or drying.

Related tags

Acrylic PaintPaint StoragePainting TechniquesContainer CareAcrylic ColourArt EducationClass 9 Mcq

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