Synthetic Fibres and Plastics Worksheet-1

Synthetic Fibres and Plastics Worksheet-1

1. Fabrics which are sold in the commercial markets by names such as polycot, polywool, terrycot are all forms of

(a) Thermoplastics                      (b) Polyesters

(c) PVC                                          (d) Thermosetting Polymers

2. There is always a need to be cautious while burning crackers during diwali. It is always advisable to avoid polyester clothing when burning crackers because

(a) Polyesters are costly and rarely procured.

(b) Polyesters are explosive in nature.

(c) During a fire polyesters melt and stick to the body causing serious burns.

(d) Polyesters gets heated up very easily.

3. PET bottles which are quite common in our everyday life is chemically a form of

(a) Plastic          (b) Acrylic         (c) Rayon           (d) Polyester

4. An example of thermosetting plastics which is often used to make electric switchgears because of its property of being a non conductor of heat and electricity is

(a) Bakelite                                    (b) Polythene

(c) Polyvinyl Chloride                 (d) Polyesters

5. Plastics finds its use in the Healthcare and the Pharmaceutical Research and Development industry because its cheap and

(a) Biodegradable                        (b) Non Reactive

(c) Easily available                      (d) Non Conducting

6. PVC or PolyVinyl Chloride is an example of:

(a) Polyethene                              (b) Thermoplastic

(c) thermosetting plastic            (d) Acrylic

7. Haldia Petrochemicals in West Bengal has one of the largest Naptha Cracker Plants in Asia. Petrochemicals are the raw materials for the production of which kind of synthetic fibres?

(a) Teflon                                       (b) Bakelite

(c) Nylon                                        (d) Polyester and Acrylic

8. Polyethene is produced by

(a) Polymerization Reaction      (b) Isomerization Reaction

(c) Hydrogenation Reaction      (d) All of these

9. The plastic product which can be remoulded

(a) Bakelite       (b) Melamine   (c) Polyethene  (d) Polycot

10. Coating of melamine plastic is used as

(a) Good conductor of heat        (b) Strong and durable

(c) Fire proof plastic                    (d) Plastic cook ware

Answer Key:

(1)-(b); (2)-(c); (3)-(d); (4)-(a); (5)-(b); (6)-(b); (7)-(d); (8)-(a); (9)-(c); (10)-(c)