Question 15: Fabrics for clothes are made from glossy yarns or polymer fibers (plastic). The type made of glossy fiber has better breathability, heat absorption, and is more comfortable to wear, so it is usually more expensive than the fabric made of polymer fibers. How can we distinguish these two fabrics?
To distinguish the two fabrics above, we cut a small piece of cloth from the two types and then burned:
– Any piece that burns and shrivels, smells of plastic, is a polymer fabric.
– The piece that burns to ash and smells of paper is some cotton made from cotton fibers.
The answer to choose is: A