Fill in the blanks.
(i) A polymer is a chain of many small units joined together which are called (ii) The synthetic fibres are also known as fibres. (iii) The first fully synthetic fibre was . (iv) A fibre similar to wool is . (v) A plastic used for making crockery is .
Fill in the blanks with appropriate words.
(a) Synthetic fibres are also called _______ __or _______ __fibres.
(b) Synthetic fibres are synthesised from raw materials called _________.
(c) Like synthetic fibres, plastic is also a _________.