EASY
8th CBSE
IMPORTANT
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Plastics are a good conductor of heat and electricity.

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Important Questions on Synthetic Fibres and Plastics

MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q C
The first artificially made fibre is _____.
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q C
The non-stick coating on pans and other cooking utensils is made of _____. (teflon/ nylon)
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q C
The full form of PVC is _____.
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q C
_____ (Bakelite/PVC/Polyethylene) is used to make plumbing pipes.
EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q C
_____ (Biodegradable/ Non-biodegradable) substances decay by the action of microorganisms through a natural process.
MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q D

Complete the crossword with the help of the clues provided.

ACROSS

3. Used in electrical switches.

5. Ethene units joined together to form.

DOWN

1. Made of ester units.

2. Used as a substitute for wool.

4. A polymer used in non-stick cookware.

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MEDIUM
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q E

Give reasons for the following.

Polythene bags should not be thrown along with garbage. 

EASY
8th CBSE
IMPORTANT
Expanded Universal Science>Chapter 3 - Synthetic Fibres and Plastics>ASSESSMENT ZONE>Q E

Give reasons for the following.

We wear cotton clothes during the summer season.