Class 8 Science – Chapter 3
Synthetic Fibres and Plastics
Worksheet – Practice Questions

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🟢 Section A: Very Short Answer (VSA)

1. What is a synthetic fibre?
2. Name the fibre obtained from wood pulp.
3. Which synthetic fibre is known as artificial silk?
4. Give one example of thermoplastic.
5. Name a plastic used for making electrical switches.

🟡 Section B: Short Answer (SA)

1. Why is rayon called a semi-synthetic fibre?
2. Write any two properties of synthetic fibres.
3. Differentiate between natural fibres and synthetic fibres.
4. Why should plastics not be burned?
5. What are biodegradable and non-biodegradable substances?

🔵 Section C: Fill in the Blanks

1. _________ fibre is obtained from petroleum.
2. Plastics are __________ in nature.
3. Bakelite is a __________ plastic.
4. Rayon resembles __________.
5. Plastic bags cause __________ pollution.

🟣 Section D: Choose the Correct Answer

1. Which fibre is strongest among the following?
   a) Cotton
   b) Wool
   c) Nylon
   d) Silk
2. Which plastic is used to make non-stick cookware?
   a) PVC
   b) Bakelite
   c) Teflon
   d) Polythene

🔴 Section E: Long Answer (LA)

1. Explain the different types of synthetic fibres with examples.
2. Describe the advantages and disadvantages of plastics.
3. Why is plastic considered a threat to the environment?

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✍️ Practice regularly to master this chapter