Oilseeds · Botany

Which property makes linseed oil useful in paints and varnishes?

  1. It is a drying oil that hardens into a film in air
  2. It dissolves completely in cold water
  3. It contains no fatty acids of any kind
  4. It remains permanently gaseous at room temperature
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Correct answer: It is a drying oil that hardens into a film in air

Linseed oil is a drying oil because it oxidizes and polymerizes when exposed to air. This allows it to form a hard protective film in paints and varnishes.

Difficulty: Medium Question 11 of 19

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