Textile and Fiber Materials

Cellulose is the primary component of dietary fiber found in plant cell walls.

Synthetic fibers are generally preferred because they are more durable and less expensive than many natural fibers, making both options 1 and 2 correct.

Rayon is a versatile semi-synthetic fiber used in various textiles, including carpets, curtains, and clothing. Among the choices, carpet is a common application.

Polyester is a synthetic fiber made from petroleum-based chemicals, whereas silk, cotton, and wool are natural fibers derived from animals or plants.

Cotton fibers are harvested from the cotton plant, then cleaned, spun into yarn, and woven into fabric to create cloth.

To extract silk, the cocoons are boiled to kill the pupa and loosen the sericin, which allows the long, continuous silk filament to be unwound.

Wool is obtained from the fleece of sheep (or other animals), and silk is produced by the larvae of silk moths, making both animal-derived fibers.

Both silk and wool are composed primarily of proteins (fibroin in silk and keratin in wool), making them protein fibers.

Cotton is a natural fibre derived from the cotton plant. Nylon, Viscose, and Elastane are all man-made or synthetic fibres.

Heat is used to set pleats in fabrics, often in combination with pressure, but heat is the primary agent that alters the fibre structure to hold the shape.

Cotton/polyester is a fibre blend that combines natural cotton with synthetic polyester, giving the benefits of both materials. Rayon, silk, and nylon are each single fibres, not blends. The question has a grammatical error ('examples' should be 'example').

Linen, hemp, and rubber are plant-based (vegetable) fibres. Alpaca is an animal-based fibre, making it the correct choice for NOT being a vegetable fibre.

Fabrics can be created through various methods such as weaving, knitting, and felting. Therefore, the statement is true.

Fibres are the basic units or raw materials used to spin yarns, which are then used to make textiles and clothes.

Nylon is a synthetic (man-made) polymer, whereas wool, metallic (natural mineral), and sisal are considered natural fibres.