Fill in the blanks with appropriate words.
(a) Synthetic fibres are also called ____ or ____ fibres.
(b) Synthetic fibres are synthesised from a raw material called _____
(c) Like synthetic fibres, plastic is also a _____

(a) Synthetic fibres are also called man-made or artificial fibres.

(b) Synthetic fibres are synthesised from raw material called petrochemicals.

(c) Like synthetic fibres, plastic is also a polymer.

[Extra information: Fibres are thread-like structures that are long, thin and flexible. These may be spun into yarns and then made into fabrics. There can be different types of fibres. On the basis of their origin, fibres are classified as natural fibres and synthetic fibres. Some fibres are made by human beings and are known as synthetic or man-made fibres. These fibres are artificially prepared using various chemicals based on petroleum. Synthetic fibres are made up of small units of substance that combine to form a large single unit called a polymer. Rayon was the first man-made fibre developed in the late 19th century as a substitute for silk. Rayon is different from synthetic fibres because it is obtained from wood pulp.  ]