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 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

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