Chapter 5: Fabrics Around Us

Home Science Part 1 • Class 11

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Chapter Analysis

Intermediate16 pages • English

Quick Summary

The chapter 'Fabrics Around Us' explores the diversity and classification of fabrics, elaborating on the processes involved in yarn and fabric production, such as weaving and knitting. It discusses the properties of various fabric materials including cotton, linen, wool, silk, and synthetic fibers like nylon and polyester. The chapter highlights the importance of fabric choice according to end-use, alongside practical techniques for textile finishing.

Key Topics

  • Diversity and classification of fabrics
  • Yarn and fabric production processes
  • Properties of different fabric materials
  • Textile finishing techniques
  • Environmental impacts of textile production
  • Historical context of silk production
  • Consumer decision-making in textile selection

Learning Objectives

  • Discuss the diversity in fabrics.
  • Name and classify fabrics commonly seen around.
  • Explain the concept of yarn and fabric making.
  • Describe the properties of each group of fabrics.
  • Make informed selection of textile products for specific end-use.

Questions in Chapter

Name five articles of everyday use that are made from different types of fabrics.

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How are textile fibres classified? Briefly discuss their characteristics.

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What is a yarn? Explain different methods of yarn processing?

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List the processes in fabric production.

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Mention any three properties of each of the following fibres: Cotton, Linen, Wool, Silk, Rayon, Nylon, Acrylic.

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Additional Practice Questions

Explain the roles of knitting and weaving in fabric production.

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Answer: Knitting and weaving are processes for converting yarns into fabric. Weaving consists of interlacing two sets of yarns perpendicular to each other, typically carried out on a loom. In knitting, loops of yarn are interlocked using needles, offering elasticity and quick manufacture for garments and sportswear.

What is the significance of textile finishing, and what are some common finishing techniques?

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Answer: Textile finishing enhances the appearance, feel, or performance of fabric. Common techniques include scouring, bleaching, dyeing for color, calendering for smoothness, and adding treatments for water repellence or flame resistance.

Discuss the environmental impact of synthetic fiber production compared to natural fibers.

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Answer: Synthetic fibers, such as polyester and nylon, typically have a higher environmental impact due to the chemical processes involved in their production, which can release pollutants. Natural fibers, like cotton and wool, are biodegradable but also have environmental concerns such as high water usage and pesticide application in cultivation.

Describe the historical development of silk production.

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Answer: Silk production, believed to have been accidentally discovered by a Chinese princess, has a long history with China keeping the art a secret for over 2000 years. The unique characteristics of silk, such as its luster and strength, have made it a valuable fabric historically.

Why is understanding fiber properties crucial when selecting fabrics?

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Answer: Understanding fiber properties is essential to select fabrics appropriate for specific uses based on their characteristics such as strength, moisture absorption, and elasticity, which affect comfort, durability, and performance.