Question

Fill in the blanks with appropriate words:-
(a) Synthetic fibres are also called ________ or ________
(b) Synthetic fibres are synthesised from raw materials called ________
(c) Like synthetic fibres, plastic is also a ________

Answer 1

Hint: We must know that the synthetic /man-made fibres are made from various chemicals or are regenerated from plant fibres. These include polyester; polyamide – (nylon); acrylics; viscose, made from wood bark; Kevlar, a high-performance fibre; and Nomex, a high-performance fibre.

Complete step by step answer:
Fibres are thread-like solids which possess high tensile strength and high modulus. It possesses strong intermolecular forces of attraction like H-bonding, dipole-dipole interaction, etc. These are often grouped into three groups: animal, vegetable, and man-made. The animal fibres are obtained from animals these include silk and wool obtained from animals.
The vegetable fibres are obtained from plants; these include cotton and linen obtained from plants.
(a) Synthetic fibres are also called man-made or artificial fibres.
We can call the raw materials for synthetic polymers as petrochemicals. These are the chemical substances obtained from petroleum by refining. Some chemical compounds made up of petroleum also are obtained from other fossil fuels, like coal or gas.
(b) Synthetic fibres are synthesised from raw materials called petrochemicals.
We can make synthetic fibres by polymerization of small molecules. Hence, they are also classified as polymers.
(c) Like synthetic fibres, plastic is also a polymer.
Note:
We can use fibre in the manufacture of ropes, nets for fishing and seat belts. Also, polyester – This fabric is made from coal and oil and is wrinkle-free and easy to clean. We can use it for the production of caps, raincoats, and ropes.