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What is the best reason for removing dust before varnishing a painting?

Answer and explanation

Correct answer: Dust may become permanently trapped in the varnish and spoil the surface

The governing concept is surface preparation before applying a transparent protective film. Varnish can seal dust particles in place, making the finished surface gritty, cloudy or uneven and reducing the visual quality of the painting. Therefore option C is correct. Dust does not make varnish reliably glossier or dramatically faster-drying, and ordinary surface dust does not shrink the canvas or change its dimensions.

Related tags

Acrylic PaintingVarnishingDust RemovalPainting SurfaceAcrylic ColourPainting TechniquesArt EducationClass 9 Mcq

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