Question

Two characteristics of wool and silk grade 7

Answer 1

Answer:  MARK AS BRAINLIEST ... HOPE IT HELPS....

Explanation:

WOOL : Composition: The chief constituent of these fibers is the protein substance called Keratin. Chemically these proteins contain 5 elements: carbon, hydrogen, oxygen, nitrogen, and sulfur. This is the only animal fiber, which contains sulfur in its composition.

Strength: Wool is the weakest of all natural textile fibers. Wool fabric is strengthened by the use of ply yarns. A hard-twisted two-ply yarn may be regarded as an assurance of durability. Tightly twisted single yarns also make a strong fabric.

SILK : Elasticity: Silk fibre is an elastic fibre and may be stretched from 1/7 to 1/5 of its original length before breaking. It tends to return to its original size but gradually loses little of its elasticity. This would mean that the fabric would be less sagging and less binding resulting in the wearers comfort.

   Resilience: Silk fabrics retain their shape and have moderate resistance to wrinkling. Fabrics that are made from short – staple spun silk have less resilience.

Answer 2

Answer:

*wool is non conductor of electricity ..!!

*wool has high power to stable heat inside the body ..

*silk is also a non conductor ..with a shining appearance ..

*silk is long-lasting fibre ..it is strongest fiber

Explanation:

mark as brainlist ..if helps uh..