Resistance to acids : Good Resistance to alkalies : Low; many alkalies destroy the fiber. Sunlight : Prolonged exposure deteriorates fiber Insects : Damaged by moths and carpet Beetles. To flame : Burns slowly when in direct flame, is considered to be self extinguishing.

2. Explain about wool. 3. Explain on manufacturing of nylon. 4. Explain on manufacturing of polyester. Answer for objective type questions: 1. (b) 2. (a) 3. (a) 4. (d) 5. (b) 4. YARN PRODUCTION 4.1 INTRODUCTION: To convert textile fibers into fabrics some type of fiber arrangement is required.