MEDIUM
8th CBSE
IMPORTANT
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What is teflon?

Important Questions on Synthetic Fibres and Plastics

MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>NaTTY NUT>Q 1
What is the difference between artificial silk and nylon?
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>NaTTY NUT>Q 2
Differentiate between polyester and polythene.
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>NaTTY NUT>Q 3
What is the difference between thermoplastics and thermosetting plastics?
HARD
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>NaTTY NUT>Q 4
Differentiate between biodegradable materials and non-biodegradable materials.
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>TOUGH NUT>Q 1
Why do cooking appliances have handles made of Bakelite?
MEDIUM
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>TOUGH NUT>Q 2
Will a shirt made of rayon, which is made from wood pulp, stick to the body on catching fire? What do you think?
HARD
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>TOUGH NUT>Q 3
Both polythene and bakelite are plastics but are still different. Can you tell the difference?
HARD
8th CBSE
IMPORTANT
Study Mate Science Class 8>Chapter 3 - Synthetic Fibres and Plastics>TOUGH NUT>Q 1

Timothy and Isaac were sitting in the bedroom and watching TV. Isaac's mother was cooking food in the kitchen. Somebody rang the bell and Isaac's mother went to the door to speak to the person. Meanwhile, in the kitchen, oil in the utensil that was placed on the gas stove burned out completely. The utensil had to be immediately removed from the gas stove and placed under running tap water. To hold the utensil, pieces of the following cloth materials were available:

(a) polyester, (b) cotton, (c) nylon and (d) acrylic. Which of these cloth pieces should be used for holding the utensil? What can we learn from this incident?