Synthetic Fibres and Plastics | Set 1

1. A chain of small chemical units combined to form a large single unit is called ____

A. Polymer

B. Poly

C. Polythene

D. None of the above

Correct : A. Polymer

2. Polythene and PVC are examples of

A. Bio degradable substance

B. Thermosetting plastics

C. Thermoplastics

D. Rayon

Correct : C. Thermoplastics

3. Plastics which when moulded once, cannot be softened by heating. Such plastics are called ____

A. Polythene

B. Thermoplastics

C. Polyster

D. Thermosetting plastics

Correct : B. Thermoplastics

4. Polycot is made by mixing two types of fibres namely

A. Silk + Cotton

B. Polythene + cotton

C. Silk + Polyester

D. Polyester + Cotton

Correct : D. Polyester + Cotton

5. The 4 R Principle is

A. Reduce, Reuse, Recycle, Recover

B. Remember, reduce, Recycle, Rejoice

C. Repeat, Rejoice, recycle, reduce

D. None of the above

Correct : A. Reduce, Reuse, Recycle, Recover

6. _____________ is an example of natural polymer

A. Rayon

B. Cellulose

C. Nylon

D. All of the above

Correct : B. Cellulose

7. Which of the following is Non-biodegradable

A. Woolen clothes

B. Plastic bag,

C. Cotton cloth

D. Wood

Correct : B. Plastic bag,

8. Bakelite and Melamine are examples of

A. Thermosetting plastics

B. Silk

C. Nylon

D. Rayon

Correct : A. Thermosetting plastics

9. Fire proof plastic uniform worn by fire fighters has a coating of _____ to make it fire resistant.

A. Nylon

B. Rayon

C. Melamine plastic

D. Silk

Correct : C. Melamine plastic

10. The coating on modern non- stick cookware and electric iron is of

A. Terrycot