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synthetic fibres and Plastics Class 8 questions answers



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

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Question 1
  1. ----------made from both synthetic and natural fibers.
  2. ---------- is the another name of lycra.
  3. ---------- fibre is also called artificial silk.
  4. Electrical switches are made of ----------.
  5. The process of combining monomers to form a polymer is called-------.
  6. Rayon is a fiber regenerated from---------.
  7. ------------ is often used are substitute for wool.
  8. ------------ is used as a coating on the surface of non- stick frying pans.
  9. -----------synthetic fiber is commonly used to make strong ropes.
  10. ---------- are long- chain polymers made by linking of several ester units.
  11. ----------plastics are set into a particular shape cannot be remolded.
  12. ---------- is the most common source for synthetic fibers.
  13. Plastic are an example of -----------.
  14. Themocol is made from--------- plastic material.
  15. Plastics are polymers that can be --------- and ---------- into any desired.

Question 2
i. ____is called a regenerated fibre.
ii. The full form of PVC is ___
iii. Synthetic fibres have ____. tensile strength.
iv. _____ is used to make bottles for packing mineral water.
v. Plastics do not react with water and ______


Short Answer type

Question 1
Name any two blended fibres?

Question 2
Why is rayon called a regenerated fibres?

Question 3
Why is nylon considered to be a good material for making fishing nets?

Question 4
Why electric plugs and switches are made of plastic?

Question 5
Why are plastic bottles commonly used to store chemicals in a chemistry laboratory?

Question 6
What can be used as a substitute for wool? Why?

Question 7
Distinguish between natural and synthetic fibers?

Question 8
Why nylon is used for making socks?

Question 9
Why people prefer wearing cotton clothes over synthetic during summer?

Question 10
Why Polyester clothes should be avoided in kitchen?

Question 11
State the following as True or False:
  1. Polyester is the strongest synthetic fibre.
  2. If plastics are burnt, they evolve oxygen gas.
  3. Bakelite is an example of thermoset.
  4. Terry wool is a blended fibre.
  5. Artificial silk is another name for silk.

Question 12
Unscramble the following to form words.
  1. NOAYR
  2. FELTON
  3. LASPICT
  4. YESPOLTER
  5. YRCILCA

Question 13
Match the column


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