Class 8 Science – Chapter 3
Synthetic Fibres and Plastics
Important Exam Questions

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A. Very Short Answer Questions (1 Mark)

1. What is a synthetic fibre?
2. Name the first synthetic fibre.
3. What is rayon also called?
4. Give one example of thermoplastic.
5. Is plastic biodegradable?

B. Short Answer Questions (2–3 Marks)

1. Why is nylon called a strong fibre?
2. Write any two uses of plastics.
3. Differentiate between natural fibres and synthetic fibres.
4. Why should plastics not be burnt?
5. What are thermosetting plastics? Give one example.

C. Long Answer Questions (5 Marks)

1. Explain the different types of synthetic fibres.
   • Rayon
   • Nylon
   • Polyester
   • Acrylic
2. Explain the properties of plastics that make them useful in daily life.
3. Write advantages and disadvantages of plastics.
4. What are plastics? Explain thermoplastics and thermosetting plastics with examples.

D. Case-Based / Application Questions

A shopkeeper uses plastic bags to pack items for customers.

• Why are plastic bags harmful to the environment?
• Suggest two eco-friendly alternatives.

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⭐ Practice these questions to score full marks in exams.