From Fiber to Fabric – Chapter 3: Class 7 Science NCERT Book (PDF)

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Chapter 3 (Fiber to Fabric) of the Class 7 Science NCERT Book (PDF) is available here for download in PDF format. Download now and prepare for the CBSE Class 7th Science exam.

Chapter 3 (Fiber to Fabric) of the Class 7 Science NCERT Book (PDF) is available here for download (PDF). Download and prepare Chapter 3 (Fiber to Fabric) of CBSE Class 7 Science. This is another important chapter of the CBSE Class 7th Science NCERT manual. The questions in this chapter are often asked during school exams.

Download Fiber to Fabric – Chapter 3: Class 7 Science NCERT Book (PDF)

Snapshot of Chapter 3 of the NCERT Science Class 7 textbook:

Important topics in this chapter:

⇒ The important key words of this chapter are Winding, Silk moth, Silkworm, Sorting, Pickling, Sericulture, Shearing, Cocoon, Fleece

⇒ Silk is obtained from silkworms and wool is obtained from sheep, goats and yak. Silk and wool are therefore animal fibers.

Camel, llama and alpaca hair are also processed to produce wool.

⇒ In India, most sheep are raised for wool.

Sheep hair is plucked from the body, washed, sorted, dried, dyed, spun and woven to produce wool.

Silkworms are caterpillars of silk butterflies.

⇒ During their life cycle, worms weave cocoons of silk fibers.

Silk fibers are made of a protein.

⇒ The silk fibers of the cocoons are separated and wound into silk threads.

Weavers weave silk threads into silk fabric.

Jagran Josh provided many important resources for exam preparation. Students from CBSE schools are advised to visit Jagran Josh’s school section, which may be useful for students. Students preparing for the competitions can also access other important resources for the preparation of the respective exams.

NCERT Book for Science Class 7 (PDF): Hindi and English


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