NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics PDF Free Download
NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics Question answer PDF Free Download
Best NCERT Solutions for Class 8 Science Chapter 3: Synthetic Fibres and Plastics
Class 8 Science Chapter 3 MCQs
Question 1. What is the other name for artificial silk?
(a) Nylon
(b) Rayon
(c) Acrylic
(d) Polyester
Answer: (b) Rayon
Question 2. Which fibre is used as artificial wool?
(a) Acrylic
(b) Rayon
(c) Nylon
(d) Cotton
Answer: (a) Acrylic
Question 3. Polymers are made up of small units called
(a) layers
(b) molecules
(c) cells
(d) monomers
Answer: (d) monomers
Question 4. The strongest synthetic fibre is
(a) nylon
(b) rayon
(c) polyester
(d) acrylic
Answer: (a) nylon
Question 5. Wood pulp is used to make
(a) plastic
(b) wool
(c) jute
(d) rayon
Answer: (d) rayon
Question 6. Which of the following is a natural fibre? ncert solutions for class 8 science chapter 3
(a) Wool
(b) Nylon
(c) PVC
(d) Polythene
Answer: (a) Wool
Question 7. Melamine is
(a) thermoplastic polymer
(b) thermosetting polymer
(c) fibre
(d) elastomer
Answer: (b) thermosetting polymer
Question 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)
Question 9. PET is a
(a) polyester
(b) polyamide
(c) nylon
(d) thermosetting polymer
Answer: (a) polyester
Question 10. Which of the following cannot be recycled? ncert solutions for class 8 science chapter 3
(a) Toys
(b) Cooker handles
(c) Carry bags
(d) Plastic chair
Answer: (b) Cooker handles
Question 11. The plastic which cannot be recycled is
(a) jute
(b) rayon
(c) petrochemicals
(d) bakelite
Answer: (d) bakelite
Question 12. Bakelite is an example of
(a) fibre
(b) elastomer
(c) nylon
(d) thermosetting polymer
Answer: (d) thermosetting polymer
Question 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
Question 14. Which of the following is non-biodegradable?
(a) Paper
(b) Cotton cloth
(c) Wood
(d) Plastic
Answer: (d) Plastic
Question 15. Which of the following is natural fibre obtained from plants?
(a) Cotton
(b) Wool
(c) Rayon
(d) Ketone
Answer: (a) Cotton | ncert solutions for class 8 science chapter 3
- Chapter 1: Crop Production and Management
- Chapter 1 : फसल उत्पादन एवं प्रबंध
- Chapter 2: Microorganisms: Friend and Foe
- Chapter 2 : सूक्ष्मजीव: मित्र एवं शत्रु
- Chapter 3: Synthetic Fibres and Plastics
- Chapter 3 : संश्लेषित तन्तु एवं प्लास्टिक
- Chapter 4: Materials: Metals and Non-Metals
- Chapter 4 : पदार्थ: धातु और अधातु
- Chapter 5: Coal and Petroleum
- Chapter 5: कोयला और पेट्रोलियम
- Chapter 6: Combustion and Flame
- Chapter 6: दहन और ज्वाला
- Chapter 7: Conservation of Plants and Animals
- Chapter 8: Cell – Structure and Functions
- Chapter 9: Reproduction in Animals
- Chapter 10: Reaching the Age of Adolescence
- Chapter 11: Force and Pressure
- Chapter 12: Friction
- Chapter 13: Sound
- Chapter 14: Chemical Effects of Electric Current
- Chapter 15: Some Natural Phenomena
- Chapter 16: Light
- Chapter 17: Stars and The Solar System
- Chapter 18: Pollution of Air and Water