CBSE Science Class 7

Fibre to Fabric

Fibre to Fabric - Chapter Wise CBSE Solved Question and Answer Based On NCERT

Short Q&A

Q1: Define wool.
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Q2: What are the different sources of wool?
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Q3: Why sheep have a thick coat of hair on their body?
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Q4: Define a fibre.
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Q5: Explain the two types of fibres.
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Q6: Why a cotton garment cannot keep us as warm in winter as a woollen sweater does?
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Q7: Match the following:

Column I Column II
  1. Scouring
  2. Cocoon
  3. Yak
  4. Mulberry leaves
  1. Yields silk fibres
  2. Wool yielding animal
  3. Food of silk worm
  4. Cleaning sheared skin
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Q8: Differentiate between natural and man - made fibres.
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Q9: Explain the process of making yarn from fiber?
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Q10: Which parts of the black sheep have wool?
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Q11: What do you meant by the white fleece of the lamb?
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Q12: What is selective breeding?
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Q13: What do you mean by shearing and how it is done?
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Q14: Why shearing of wool done only in summer?
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Q15: Why wool yielding animals have a thick coat of hair?
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Q16: Does shearing hurts the sheep?
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Q17: What do you mean by scouring?
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Q18: How we get wool fibres from sheep?
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Q19: What are the main hazards of wool industry?
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Q20: Explain the process of obtaining silk?
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Q21: Why caterpillars need to shed their skin when they grow bigger?
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Q22: Why caterpillars should not be collected with bare hands?
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Q23: Why does silk have different varieties?
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Q24: Write short notes on rearing.
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Q25: Write short notes on shearing.
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Q26: Explain sericulture.
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Q27: Write and explain the sequence of steps in processing of wool.
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Q28: Draw a sketch showing stages in life cycle of silk moth.
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Q29: What do you mean by reeling of silk?
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Q30: Write short notes on rearing silkworm.
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Chapter 3 Fibre to Fabric