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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

HOTS Silk fiber is used to manufacture parachute. Why?

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Question

HOTS

Silk fiber is used to manufacture parachute. Why?

Answer in Brief
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Solution

  1. Silk is the strongest natural fibre.
  2. It is thin light in weight, strong.
  3. It is easly to peak and unfold.
  4. It is also fire resistant.
  5. It is dries quickly.
  6. It is also resistant to abrasion and chemicals.
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Animal Fibre: Silk
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Chapter 5: Animals in Daily Life - Evaluation [Page 91]

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Samacheer Kalvi Science - Term 3 [English] Class 7 TN Board
Chapter 5 Animals in Daily Life
Evaluation | Q IX. 1. | Page 91

RELATED QUESTIONS

Make sketches of the two stages in the life history of the silk moth which are directly related to the production of silk.


Match the words of Column I with those given in Column II:

Column I Column II
Scouring Yields silk fibres
Mulberry leaves Wool yielding animal
Yak Food of silk worm
Cocoon Reeling
  Cleaning sheared skin

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State whether the following statement is True or False. If false, correct them.

The rearing of silkworms for obtaining silk is called silviculture.


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  2. Fibres are taken out from the cocoon.
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  5. Female silk moths lay eggs.
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Paheli went to the market to buy sarees for her mother. She took out a thread from the edge of the two sarees shown by the shopkeeper and burnt them. One thread burnt with a smell of burning hair and the other burnt with the smell of burning paper. Which thread is from a pure cotton saree and which one from a pure silk saree? Give reason for your answer.


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India stands ______ in silk production in the world.


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