HARD
8th CBSE
IMPORTANT
Earn 100

Give three uses of polyester, and explain the reason for each use.

Important Questions on Synthetic Fibres and Plastics

HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q D
These days clothes made out of a mixture of synthetic fibres and natural fibres are more popular than those made purely out of synthetic fibres. Discuss the reasons for this.
HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q D
Differentiate between thermoplastics and thermosetting plastics. Give two examples of each.
HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q D
Plastics are very useful materials. Why then is there concern today about their increasing use?
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q D
List three steps you can take to reduce the danger that plastics pose to the environment.
HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q E
How is rayon made? Why is it called artificial silk? List its important properties and uses.
HARD
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q E
List and explain four properties of plastics. Give one use of plastics linked to each of these properties.
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q E
Give the characteristic properties and important uses of polythene.
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q E
Give the characteristic properties and important uses of polystyrene.