EASY
8th CBSE
IMPORTANT
Earn 100

The prefix 'poly' means 'many' for example, 'polygon' means a figure with many sides. What is the significance of the prefix 'poly' in 'polyester'? 

Important Questions on Synthetic Fibres and Plastics

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>ORAL QUESTIONS>Q 3

Synthetic fibres are strong, elastic, light, wrinkle-resistant, and easy to wash and dry. Even with so many advantages, we do not wear clothes made of pure synthetic fibres, but a mixture of synthetic and natural fibres. Why is this necessary? 

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>ORAL QUESTIONS>Q 1
The molecular structures of synthetic fibres and plastics have one common feature. What is it? 
MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>ORAL QUESTIONS>Q 2

Bakelite and polythene are both plastics. However, there is one major difference in their nature. What is the difference? 

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>ORAL QUESTIONS>Q 3
Can bacteria break down plastics? 
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q A
Which of these is a natural fibre?
EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q A

Which of these is a fibre derived from chemicals? 

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q A

Which of these fibres is made from a raw material obtained from plants?

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 3 - Synthetic Fibres and Plastics>EXERCISES>Q A

Which of these is a thermosetting plastic?