Synthetic Fibers and Their Properties

The video tutorial explores the evolution of fabrics from natural to synthetic materials. It covers the properties, types, and uses of synthetic fibers like rayon, nylon, polyester, and acrylic. The tutorial highlights the advantages and disadvantages of synthetic fibers, emphasizing their durability, affordability, and ease of maintenance, while also noting their potential safety hazards. The lesson aims to provide a comprehensive understanding of synthetic fibers and their role in everyday life.

What are the main objectives of the lesson on synthetic fibers?

• To learn about natural fibers

• To understand the history of fabrics

• To discuss synthetic fibers and their types

• To study the properties of natural fibers

What is a polymer?

• A type of natural fiber

• A chain of monomers

• A chemical used in dyeing

• A single large unit

Which synthetic fiber is known as artificial silk?

• Acrylic

• Rayon

• Polyester

• Nylon

What was the first fully synthetic fiber?

• Nylon

• Acrylic

• Rayon

• Polyester

Which fiber is used for making parachutes and ropes for rock climbing?

• Nylon

• Acrylic

• Rayon

• Polyester

What is polyester made up of?

• Cotton fibers

• Natural silk

• Wood pulp

• Repeating units of esters

Which synthetic fiber is used extensively in the textile industry to make clothes like saris and dress materials?

• Nylon

• Rayon

• Polyester

• Acrylic

What is an advantage of acrylic fiber over natural wool?

• More expensive

• Less variety of colors

• Relatively cheaper

• Heavier

Why are synthetic fibers more popular than natural fibers?

• They are more expensive

• They are less durable

• They dry up quickly and are easy to maintain

• They are uncomfortable to wear

What is a disadvantage of synthetic fibers?

• They are expensive

• They do not catch fire easily

• They trap body heat and do not absorb sweat

• They are very comfortable in summers