Class 8 Science

Inaaya

Asked: November 20, 2020In: Class 8 Science

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

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 9

Inaaya

Asked: November 20, 2020In: Class 8 Science

Categorise 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 and electrical switches.

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 8

Inaaya

Asked: November 20, 2020In: Class 8 Science

Explain why Electric plugs/switches/plug boards are made of thermosetting plastics.

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 7 Part: B

Inaaya

Asked: November 20, 2020In: Class 8 Science

Explain why Saucepan handles are made of thermosetting plastics.

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 7 Part: A

Inaaya

Asked: November 20, 2020In: Class 8 Science

Explain the difference between the thermoplastic and thermosetting plastics.

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 6

Inaaya

Asked: November 20, 2020In: Class 8 Science

Explain why plastic containers are favoured for storing food.

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 5

Inaaya

Asked: November 20, 2020In: Class 8 Science

Give examples which indicate that nylon fibres are very strong.

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 4

Inaaya

Asked: November 20, 2020In: Class 8 Science

Like synthetic fibres, plastic is also a __________ .

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 3 Part: c

Inaaya

Asked: November 20, 2020In: Class 8 Science

Synthetic fibres are also called or _ fibres.

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 3 Part: a

Poll

Inaaya

Asked: November 20, 2020In: Class 8 Science

Mark (√) the correct answer: Rayon is different from synthetic fibres because

NCERT Solutions for Class 8 Science Chapter 3 Important NCERT Questions 8th Chapter 3 Synthetic Fibres and Plastics NCERT Books for Session 2022-2023 CBSE Board and State Bord Questions No: 2

Category: Class 8 Science

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

Categorise 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 and electrical switches.

Explain why Electric plugs/switches/plug boards are made of thermosetting plastics.

Explain why Saucepan handles are made of thermosetting plastics.

Explain the difference between the thermoplastic and thermosetting plastics.

Explain why plastic containers are favoured for storing food.

Give examples which indicate that nylon fibres are very strong.

Like synthetic fibres, plastic is also a __________ .

Synthetic fibres are also called or _ fibres.

Mark (√) the correct answer: Rayon is different from synthetic fibres because

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Category: Class 8 Science

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