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NCERT solutions for Class 8 Science chapter 3 - Synthetic Fibres and Plastics

Science Textbook For Class 8

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Chapters

NCERT Science Class 8

Science Textbook For Class 8

Chapter 3: Synthetic Fibres and Plastics

Chapter 3: Synthetic Fibres and Plastics solutions [Pages 41 - 42]

Q 1 | Page 41

Explain why some fibres are called synthetic.

Q 2 | Page 41

Mark (✓) the correct answer:

Rayon is different from synthetic fibres because

(a) it has a silk like appearance

(b) it is obtained from wood pulp

(c) its fibres can also be woven like those of natural fibres

Q 2.1 | Page 41

Fill in the blanks with appropriate words.

Synthetic fibres are also called ______ or _______ fibres.

Q 3.2 | Page 41

Fill in the blanks with appropriate words.

Synthetic fibres are synthesised from raw materials called ______

Q 3.3 | Page 41

Fill in the blanks with appropriate words.

Like synthetic fibres, plastic is also a _______

Q 4 | Page 41

Give examples which indicate that nylon fibres are very strong.

Q 5 | Page 41

Explain why plastic containers are favoured for storing food.

Q 6 | Page 41

Explain the difference between thermoplastic and thermosetting plastics.

Q 7 | Page 41

Explain why the following are made of thermosetting plastics.

Saucepan handles

Electric plugs/switches/plug boards

Q 8 | Page 41

Categorize the materials of the following products into ‘can be recycled’ and ‘cannot be recycled’.

Telephone instruments, plastic toys, cooker handles, carry bags, ball point pens, plastic bowls, plastic covering on electrical wires, plastic chairs, electrical switches.

Q 9 | Page 41

Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason.

Q 10 | Page 41

Give examples to show that plastics are non-corrosive in nature.

Q 11 | Page 41

Should the handle and bristles of a tooth brush be made of the same material? Explain your answer.

Q 12 | Page 41

‘Avoid plastics as far as possible’. Comment on this advice.

Q 13 | Page 42

Match the terms of column A correctly with the phrases given in column B.

  A   B
1 Polyester a Prepared by using wood pulp
2 Teflon b Used for making parachutes and stockings
3 Rayon c Used to make non-stick cookware
4 Nylon d Fabrics do not wrinkle easily
Q 14 | Page 42

‘Manufacturing synthetic fibres is actually helping conservation of forests’. Comment.

Q 15 | Page 42

Describe an activity to show that thermoplastic is a poor conductor of electricity.

NCERT Science Class 8

Science Textbook For Class 8

NCERT solutions for Class 8 Science chapter 3 - Synthetic Fibres and Plastics

NCERT solutions for Class 8 Science chapter 3 (Synthetic Fibres and Plastics) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Science Textbook For Class 8 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at shaalaa.com are providing such solutions so that students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 8 Science chapter 3 Synthetic Fibres and Plastics are Concept of Synthetic Fibres, Types of Synthetic Fibres, Concept of Plastics, Plastics as Materials of Choice, Plastics and the Environment.

Using NCERT Class 8 solutions Synthetic Fibres and Plastics exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 8 prefer NCERT Textbook Solutions to score more in exam.

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