Which one among the following is commonly used as an 'anti-skinning agent' in paints?
- A. Gelatin
- B. N-methyl pyrrolidone
- C. Pyridine
- D. Polyhydroxy phenol ✓
Correct Answer: D. Polyhydroxy phenol
Explanation
Polyhydroxy phenols act as antioxidants and are added to paints as anti-skinning agents to prevent the premature oxidation and polymerization of the drying oils on the surface.
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