Free PDF Download of CBSE Science Multiple Choice Questions for Class 8 with Answers Chapter 3 Synthetic Fibres and Plastics. Science MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 8 Science Synthetic Fibres and Plastics MCQs Pdf with Answers to know their preparation level.
Synthetic Fibres and Plastics Class 8 Science MCQs Pdf
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
Answer: (a)
2. Polythene and PVC are examples of
a) Bio degradable substance
b) Thermosetting plastics
c) Thermoplastics
d) Rayon
Answer
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
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
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
Answer: (a)
6. _____________ is an example of natural polymer
a) Rayon
b) Cellulose
c) Nylon
d) All of the above
Answer
Answer: (b)
7. Which of the following is Non-biodegradable
a) Woolen clothes
b) Plastic bag,
c) Cotton cloth
d) Wood
Answer
Answer: (b)
8. Bakelite and Melamine are examples of
a) Thermosetting plastics
b) Silk
c) Nylon
d) Rayon
Answer
Answer: (a)
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
Answer
Answer: (c)
10. The coating on modern non- stick cookware and electric iron is of
a) Terrycot
b) Rayon
c) Polyester
d) Teflon
Answer
Answer: (d)
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