Chapter 3 – Synthetic Fibers and Plastic

Cellulose is made up of a large number of ………………… units.

Synthetic Íbres are:

Which of the following is not thermoplastics:

Wire made from which Íbre is strongest:

PET is form of:

Which of the following is used to make non-stick cookwares:

Which of the following is used for making parachutes and stockings:

Fabrics made of …………………. do not wrinkle easily.

Wood pulp is used for preparation of:

Which of the following softens on heating and then can be moulded into various shapes:

Which of the following once set do not soften on heating:

Food hems are stored ¡n plastic containers because they are:

Bristles of tooth brush are made from:

Which of the following can be recycled:

Which of the following cannot be recycled:

The Íbre that burns readily with smell of burning paper is:

Which of the following is a thermosetting plastic:

Which of the following is obtained from hair of an animal:

Which of these Íbres is made from raw material obtained from plants:

Which of the following Íbre is synthetic:

Which of the following Íbre is natural polymer:

Which of the following is not biodegradable:

Rayon is:

Polymer present in plants is:

Natural substance is:

Polymer present in wood is:

Which of the following garbage is biodegradable:

Polycot is a mixture of:

Polywool is a mixture of:

A synthetic Íbre resembling wool is: