8th Class Science Chapter Quiz: Synthetic Fibres and Friction
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Questions and Answers

Which of the following is NOT a property of synthetic fibers?

  • Lightweight
  • Biodegradability (correct)
  • Resistance to moths
  • Durability
  • What is the primary advantage of synthetic fibers over natural fibers?

  • Lower tensile strength
  • Increased susceptibility to heat
  • Higher cost of production
  • Enhanced resistance to chemicals (correct)
  • Which of the following statements about friction is true?

  • Friction is only present in solid surfaces.
  • Friction always decreases the speed of an object.
  • Friction can generate heat when two surfaces rub against each other. (correct)
  • Friction works against gravity only.
  • Which synthetic fiber is known for its use in making ropes and outdoor equipment?

    <p>Nylon</p> Signup and view all the answers

    How does increasing surface roughness affect friction?

    <p>It can increase friction.</p> Signup and view all the answers

    _____ is a type of synthetic fiber commonly used in clothing production.

    <p>Polyester</p> Signup and view all the answers

    Which of these synthetic fibers is most commonly used for making carpets?

    <p>Nylon</p> Signup and view all the answers

    Friction only occurs between solid surfaces.

    <p>False</p> Signup and view all the answers

    What is one advantage of synthetic fibers over natural fibers?

    <p>Synthetic fibers are generally more durable and resistant to wear and tear.</p> Signup and view all the answers

    Match the following synthetic fibers with their uses:

    <p>Acrylic = Sweaters and blankets Lyocell = Eco-friendly clothing Aramid = Protective gear Spandex = Athletic wear</p> Signup and view all the answers

    Study Notes

    Science Class 8th Chapter Synthetic Fibres and Friction Question Paper Pattern

    Section A

    • Fill in the blanks: 10 marks, 1 mark each for 10 questions
    • Multiple Choice Questions (MCQ): 5 marks, 1 mark each for 5 questions
    • Match the Following: 5 marks, 1 mark each for 5 questions
    • Assertion and Reasoning: 5 marks, 1 mark each for 5 questions

    Section B

    • Short Answer: 10 marks, 2 marks each for 5 questions

    Section C

    • Answer in detail: 20 marks, 4 marks each for 5 questions
    • Higher Order Thinking Skills (HOTS): 5 marks, 1 question

    Section D

    • Unseen passage: 10 marks, 2 passages (1 on Synthetic Fibres and 1 on Friction), 5 marks each

    Science Class 8th Chapter Synthetic Fibres and Friction Question Paper Pattern

    Section A

    • Fill in the blanks: 10 marks, 1 mark each for 10 questions
    • Multiple Choice Questions (MCQ): 5 marks, 1 mark each for 5 questions
    • Match the Following: 5 marks, 1 mark each for 5 questions
    • Assertion and Reasoning: 5 marks, 1 mark each for 5 questions

    Section B

    • Short Answer: 10 marks, 2 marks each for 5 questions

    Section C

    • Answer in detail: 20 marks, 4 marks each for 5 questions
    • Higher Order Thinking Skills (HOTS): 5 marks, 1 question

    Section D

    • Unseen passage: 10 marks, 2 passages (1 on Synthetic Fibres and 1 on Friction), 5 marks each

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    Description

    Test your knowledge of Synthetic Fibres and Friction with this 80-mark question paper designed for 8th class students. Questions cover various aspects of synthetic fibres and friction, including fill-in-the-blanks, MCQs, matching, and assertion-reasoning type questions.

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