8th Class Science Chapter Quiz: Synthetic Fibres and Friction

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?

Nylon Signup and view all the answers

How does increasing surface roughness affect friction?

It can increase friction. Signup and view all the answers

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

Polyester Signup and view all the answers

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

Nylon Signup and view all the answers

Friction only occurs between solid surfaces.

False Signup and view all the answers

What is one advantage of synthetic fibers over natural fibers?

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

Match the following synthetic fibers with their uses:

Acrylic = Sweaters and blankets Lyocell = Eco-friendly clothing Aramid = Protective gear Spandex = Athletic wear 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

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.