Question

Pigments comprise ______ of the dry solids in paper coatings.

(a) 10%–30%

(b) 70%–90%

(c) 40%–50%

(d) 60%–90%

The question was asked during an internship interview.

Enquiry is from Paper Making topic in division Paper and Paper Based Packaging Materials of Food Packaging Technology

Answer 1

The correct choice is (b) 70%–90%

For explanation I would say: Pigments comprise 70%–90% of the dry solids in paper coatings. They are generally designed to mask or change the appearance of the base stock, improve opacity, impart a smooth and receptive surface for printing or provide special properties for particular purposes.