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- 1. Multiple Choice
Which of the following polymers is not made by humans in an industrial process?
Melamine
Bakelite
Nylon
Acrylic
Silk
- 2. Multiple Choice
Which of the following statements is/are false?
Cellulose is a polymer that is made up of a large number of small glucose molecules joined one after the other.
Wood contains a very less amount of cellulose polymer.
The small molecules that join together to form a polymer are called monomers
- 3. Multiple Choice
Which of the following man-made fibers is made from a natural material called cellulose?
Polyester
Rayon
Nylon
Acrylic
- 4. Multiple Choice
Which of the following is not a property of nylon?
Nylon is a thermoplastic polymer.
Nylon fibers are fairly strong and elastic
Nylon fibers are lightweight and lustrous.
It is cheaper than natural silk and can be woven like silk fiber.
- 5. Multiple Choice
Which of the following fiber threads is actually stronger than a steel wire of similar thickness?
Wool
Silk
Nylon
Cotton
- 6. Multiple Choice
Which of the following is not a characteristic of synthetic fibers?
Synthetic fibers are very durable.
Synthetic fibers absorb very little water.
Synthetic fibers are wrinkle resistant.
Synthetic fibers are extremely thick and strong.
- 7. Multiple Choice
Polyester is a synthetic fiber in which the polymer units are linked by ester groups. Which of the following is not a property of polyester?
Polyester fibers are weaker in strength than nylon fibers.
Polyester fiber is not attacked by moths and ordinary chemicals.
Polyester is a thermoplastic polymer.
Polyester fibers are softer than nylon fibers.
- 8. Multiple Choice
Which of the following is a fire-resistant plastic and is used to coat the uniforms of firemen?
Teflon
Melamine
Bakelite
PVC
- 9. Multiple Choice
Which of the following plastics is used for making electric switches, plugs and sockets?
Polythene
Polyvinyl chloride Melamine
Melamine
Bakelite
- 10. Multiple Choice
Which of the following arrangements is the correct order of fabrics in their decreasing strength?
Polyester - Nylon - Silk - Cotton - Wool
Nylon - Polyester - Silk - Cotton - Wool
Wool - Nylon - Silk - Cotton - Polyester
Polyester - Nylon - Cotton - Silk - Wool
- 11. Multiple Choice
In which of the following plastics are the long polymer chains cross-linked with one another?
Acrylic
Bakelite
Polyester
Nylon
- 12. Multiple Choice
Polycot is made by mixing two types of fibres namely
Silk+cotton
Wool+cotton
Polyester+Cotton
Polyethylene+Cotton
- 13. Multiple Choice
The coating on modern non- stick cookware and electric iron is of
Terrycot
Rayon
Teflon
Nylon
- 14. Multiple Choice
The 4R principle is
Reduce, Reuse, Recycle, Recover
Remember, Reduce, Recycle, Rejoice
Repeat, Recycle, Rejoice, Reduce
None of these
- 15. Multiple Choice
The plastics which do not remould again on heating are called:
Thermosetting plastics
Thermoplastics
Both of these
None of these
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