Fill in the blanks using proper words.
(a) Rubber made by vulcanization is a ...... material.
(b) Man-made materials are made by .......... natural materials.
(c) ............. thread was developed simultaneously in New York and London.
(d) Rayon is also known as ............

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Solution

(a) Rubber made by vulcanization is a man-made material.
(b) Man-made materials are made by processing natural materials.
(c) Nylon thread was developed simultaneously in New York and London.
(d) Rayon is also known as synthetic silk.

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Similar questions

Rubber made by vulcanization is a material.

Fill in the following blanks with suitable words :

(a) Synthetic fibres are also called .......... or ....... fibres.

(b) Synthetic fibres are made from raw materials called .......

(d) The use of plastics can be reduced by using bags made of ........ or ......... instead of polythene bags.

Disposable plastic plates should not be used because

(a) they are made of lightweight materials.

(b) they are made of toxic materials.

(d) they are made of non-biodegradable materials.

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