Question

Question 25
Indicate whether the following statements are true or false. Also write the false statements in their correct form.

(i) The fabric terry wool is obtained by mixing terylene and wool.
(ii) Synthetic fibres do not melt on heating.
(iii) It is risky to wear synthetic clothes while working in the kitchen.
(iv) Most of the plastics are biodegradable.

Answer 1

(i) True
(ii) False, synthetic fibres melt on heating because when synthetic fibres burn the bonds between chains breaks first while bonds between monomers remains intact leading to melting of fibres.
(iii) True , because synthetic fibres catches fire very quickly and melts quickly thus causing severe burns to the person wearing it.
(iv) False, most of the plastics are non-biodegradable.