MEDIUM
8th CBSE
IMPORTANT
Earn 100

Give reason for the following.

Refrigerators have a plastic foam core.

Important Questions on Synthetic Fibres and Plastics

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 3

Give reason for the following.

Electric wires have a plastic covering.

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 3

Give reason for the following.

Bakelite is used for making electric switches.

MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 1
Natural wool is attacked by moths whereas acrylic wool is not. Explain.
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 2
Production of synthetic fibres helps in the conservation of forests. Comment.
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 1
Which fibre would you use for making fishing net and why?
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 2
Your mother has bought two lunch boxes for you. One is made up of plastic and the other is of steel. Which one will you use and why?
MEDIUM
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 1

Anurag wants to buy shirts for summers. Which of the following should he buy and why?

(i) shirts made up of acrylic fibre as it is lightweight

(ii) shirts made up of polyester as it is wrinkle-free

(iii) shirts made up of rayon as it absorbs sweat

(iv) shirts made up of cotton as it absorbs sweat

EASY
8th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 3 - Synthetic Fibres and Plastics>Exercise>Q 2
Nylon is used for making socks because it _____.