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synthetic fibres and Plastics Class 8 CBSE Important questions(Long type questions)



In this page we have synthetic fibres and Plastics Class 8 CBSE Important questions(Long type questions) . Hope you like them and do not forget to like , social share and comment at the end of the page.

Long answer type questions

Question 1
What are blended fibres? Are they better than synthetic fibre? Explain with an example.

Question 2
Why are plastics preferred these days? Explain giving example?

Question 3
Write three uses of plastics?


Question 4
What are biodegradable and non- biodegradable materials? Give one example of each of them?

Question 5
How is rayon made? Why it is called artificial silk?

Question 6
Name two polyester fabrics and their uses.

Question 7
What are the common varieties of polyester?  Also, mention the natural fibres, which are used for blending to enhance their properties.

Question 8
What are the disadvantage of synthetic fibres.

Question 9
What is polymerization? Given below are two types of polymerization, identify it and describe them each.


Question 10
‘Plastics are hazard to environment’. Explain this statement.

Question 11
List down the characteristics of polyester.

Question 12
What is the difference between thermosetting and thermoplastics?

Question 13
What are the advantages of rayon?

Question 14
Study the image and answer the following question.

  1. What is this image of? What is it made up of?
  2. Is it biodegradable or non -biodegradable?
  3. How do affect us?

Question 15
What is PET? What it is made up of? State its use.


ANSWER THE FOLLOWING QUESTIONS: (HOTS)

Question 16
How can you show that thermoplastics are poor conductor of electricity from your daily life?

Question 17
A bucket made up of iron rusts but a bucket made up of plastic do not. Why?

Question 18

Question 19

Question 20

  1. Identify the material this pan is made up of.
  2. Why is it called non -stick?
  3. To which category the material belongs.

Question 21

What kind of plastics are used to make these uniforms and why?

Question 22
Why rayon is called “artificial silk”?

Question 23
Rakesh went to a shop to buy blanket. The shopkeeper showed him two blanket one made of acrylic fibre and the other one of wool. He decided to buy acrylic blanket. Do you know why?

Question 24
Is nylon used for making parachutes? Justify your answer.

Question 25
Why polybags should not be thrown in water bodies?


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