CBSE Science Class 7
Fibre to Fabric
Fibre to Fabric - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Very Short Q&A
Q1: Wool is obtained from __________________ of sheep or yak.
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Q2: Silk fibres are obtained from cocoons of _________________.
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Q3: Name some animals which provide us with wool.
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Ans:
Sheep, goat yak etc.
Q4: Yak wool is common in
- Tibet
- Ladakh
- Both a and b
- None of these.
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Q5: Name the place where Angora goats are found in plenty.
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Ans:
Hilly region like Jammu and Kashmir.
Q6: Name some Indian breed of sheep.
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Ans:
Lohi, Rampur, bushair, Nali, Bakharwal , Marwari and Patanwadi
Q7: Kashmiri goat's under fur is woven to form fine shawls called __________________.
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Q8: The fur on the body of camel is also used as wool .True/False.
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Q9: Which parts of the black sheep have wool?
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Ans:
The hairy skin called fleece have wool in black sheep.
Q10: Name the protein which is the chief component of wool fibres.
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Ans:
Keratin is the chief component of wool fibres
Q11: Name the process involved in getting fibres form the sheep.
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Ans:
The sheep's hair are Sheared off from its body, scoured, sorted, dried, dyed, spun and woven to yield wool.
Q12: Define sericulture.
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Ans:
The rearing breeding and management of silkworms for obtaining silk is called sericulture.
Q13: Caterpillars should be collected from bare hand or not?
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Q14: Name the country which is the largest producer of silk.
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Q15: Silk is a good conductor of heat or poor conductor of heat?
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Q16: What is yarn?
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Ans:
Yarn is a long continuous thread that is made up of fibre.
Q17: ______________is a dried perspiration found in raw wool.
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Q18: What is ginning?
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Ans:
The process of removing seed from cotton called ginning.
Q19: Spinning is a process of making fibers. True/False.
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Q20: Weaving yarn makes a piece of fabric. True/False
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Q21: Polyester is a natural fibre. True/False.
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Q22: Name a strongest variety of silk.
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Q23: Define weaving.
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Ans:
Weaving is the process of arranging two sets of yarns together to make a fabric.
Q24: Define spinning.
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Ans:
The process of making yarn from fibres is called spinning.
Q25: Name the most common silk moth.
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Q26: Name some varieties of silk.
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Ans:
Mulberry silk, tassar silk, eri silk, Mooga silk etc.
Q27: ______________ weaves silk threads into silk cloth.
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Q28: What do you mean by cocoon?
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Ans:
Caterpillar in its later stage of development completely covers itself by silk fibres and turns into pupa. This covering is known as cocoon.
Q29: Name two animals of South America that yields wool.
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Q30: Which of the following does not yield wool?
- Yak
- Camel
- Woolly dog
- Goat
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