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

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🟢 Section A: Fill in the Blanks

1. Rayon is obtained from __________.
2. The first synthetic fibre was __________.
3. Plastics which can be recycled are called __________ plastics.
4. __________ plastic is used to make electrical switches.
5. Acrylic fibre is similar to __________.

🟢 Section B: True or False

1. Natural fibres are obtained from plants and animals.
2. Plastics are biodegradable in nature.
3. Nylon is stronger than silk.
4. Thermoplastics can be reshaped on heating.
5. Burning plastics is safe for the environment.

🟢 Section C: Very Short Answer Questions

1. What is a synthetic fibre?
2. Name any two synthetic fibres.
3. Why is nylon used to make ropes?
4. What is plastic?
5. Name one biodegradable and one non-biodegradable material.

🟢 Section D: Short Answer Questions

1. What are the advantages of synthetic fibres?
2. Differentiate between thermoplastics and thermosetting plastics.
3. Why should plastics not be burnt?
4. Write two uses of Bakelite.

🟢 Section E: Long Answer Question

1. Explain the impact of plastics on the environment. Suggest measures to reduce plastic pollution.

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✍️ Try to answer without looking at notes – self-practice builds confidence!