MCQ Questions for Class 8 Science Chapter 3 : NCERT CBSE RBSE other Board MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern.
MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers
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
Answer: (a)
2. Polythene and PVC are examples of
a) Bio degradable substance
b) Thermosetting plastics
c) Thermoplastics
d) Rayon
Answer: (c)
3. Plastics which when moulded once, cannot be softened by heating. Such plastics are called ____
a) Polythene
b) Thermoplastics
c) Polyster
d) Thermosetting plastics
Answer: (d)
4. Polycot is made by mixing two types of fibres namely
a) Silk + Cotton
b) Polythene + cotton
c) Silk + Polyester
d) Polyester + Cotton
Answer: (d)
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
Answer: (a)
6. _____________ is an example of natural polymer
a) Rayon
b) Cellulose
c) Nylon
d) All of the above
Answer: (b)
7. Which of the following is Non-biodegradable
a) Woolen clothes
b) Plastic bag,
c) Cotton cloth
d) Wood
Answer: (b)
8. Fibre produced in factories is called
(a) man-made fibre
(b) natural fibre
(c) synthetic fibre
(d) both (a) and (c)
Answer: (d) both (a) and (c)
9. PET is a
(a) polyester
(b) polyamide
(c) nylon
(d) thermosetting polymer
Answer: (a) polyester
10. Which of the following cannot be recycled?
(a) Toys
(b) Cooker handles
(c) Carry bags
(d) Plastic chair
Answer: (b) Cooker handles
11. The plastic which cannot be recycled is
(a) jute
(b) rayon
(c) petrochemicals
(d) bakelite
Answer: (d) bakelite
12. Bakelite is an example of
(a) fibre
(b) elastomer
(c) nylon
(d) thermosetting polymer
Answer: (d) thermosetting polymer
13. Which term is used for polymers made up of a large number of glucose units?
(a) Protein
(b) Fructose
(c) Cellulose
(d) Polyester
Answer: (c) Cellulose
14. Which of the following is non-biodegradable?
(a) Paper
(b) Cotton cloth
(c) Wood
(d) Plastic
Answer: (d) Plastic
15. Which of the following is natural fibre obtained from plants?
(a) Cotton
(b) Wool
(c) Rayon
(d) Ketone
Answer: (a) Cotton
Match the following items given in Column ‘A with that in Column ‘B’.
| Column ‘A’ | Column ‘B’ |
| Cotton | Thermoplastic |
| Nylon | Polyester |
| PVC | Biodegradable |
| Bakelite | Artificial fibres |
| PET | Artificial wool |
| Acrylic | Chain of glucose units |
| cellouse | Non-biodegradable |
| Paper | Natural fibre |
| Plastic Bags | Cook wares |
| Teflon | Thermosetting |
Answer:
| Column ‘A’ | Column ‘B’ |
| Cotton | Natural fibre |
| Nylon | Artificial fibres |
| PVC | Thermoplastic |
| Bakelite | Thermosetting |
| PET | Polyester |
| Acrylic | Artficial wool |
| cellouse | Chain of glucose units |
| Paper | Biodegradable |
| Plastic Bags | Non-biodegradable |
| Teflon | Cook wares |
