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NCERT Solutions for Class 8 Science, Chapter 3 - Synthetic Fibres And Plastics

The NCERT Class 8 Science, Chapter 3 deals with Synthetic Fibres and Plastics. In this chapter, you will learn about fabrics and how they are made. You will learn about different types of fibres: man-made fibres and natural fibres. Besides, you will also learn more about the different materials and the fabric used in the preparation of these items. You will understand more about the types of materials used and also the reasons for using specific material for a particular item. In this chapter, you will also learn about plastic and the reason for plastic being the most useful material in making items out of it. You will also study the demerits of using plastic with regard to its damage to the environment.

To know more about NCERT Solutions for Class 8, Science Chapter 3, Synthetic Fibres and Plastics, let’s look at the topics and sub-topics of this chapter:

3.1 What are Synthetic Fibres?

3.2 Types of Synthetic Fibres

3.3 Characteristics of Synthetic Fibres

3.4 Plastics

3.5 Plastics as Materials of Choice

3.6 Plastics and the Environment

In Class 8 Science Chapter 3, you will learn-

Section 3.1 – This section deals with synthetic fibres. In this section, you will learn more about synthetic fibres which are artificial or man-made fibres. You will learn that these fibres are made by joining several small units together. In this section, the topic – synthetic fibres and their features – will be introduced to you.

Section 3.2 – This section deals with types of synthetic fibres. In this section, you will learn about the different types of synthetic fibres made. You will learn about Rayon, Nylon, Polyester and Acrylic. You will also learn the composition of these fibres. This section helps you to understand the different fibres and their uses. You will understand that these different fibres have their own special characteristics and uses. In this section, you will learn which fibre is used for a specific purpose and the reason for it. It helps you to understand the uses of these different fibres depending on the situation and kind of properties required.

Section 3.3 – This section deals with characteristics of synthetic fibres. In this section, you will learn more about synthetic fibres. You will learn the characteristics of these synthetic fibres. This section is a brief discussion about the features of synthetic fibres like durability, cost efficiency, easy maintenance etc.

Section 3.4 – This section deals with plastics. In this section, you will learn about another synthetic fibre called plastic. You will learn the characteristics and uses of plastic. You will also learn that plastic is easily moldable in any shape, colour and can be rolled, twisted and made into wires. You will also learn about the different types of plastics like PVC, thermoplastics and thermosetting plastics. In this section, you will understand the use of plastics in various household and other items.

NCERT Class 8 Science, Chapter 3 helps you to understand the concept of Synthetic Fibres and Plastics. In this chapter, you will learn about the different polymers and fibres used in daily life. You will also learn the characteristics of these synthetic fibres and their uses in daily life. In this chapter, you will learn about the types of synthetic fibres and the uses of these fibres in preparation of different items. In this chapter, you will also study about plastics and different types of plastics used. You will also learn the demerits of using plastic. Plastics do not degrade naturally and hence, it is harmful for the environment.

Section 3.5 – This section deals with the concept of plastics as materials of choice. In this section, you will learn more about the characteristics of plastics. You will learn the reasons for choosing plastics over other materials. You will understand the factors for using plastics as a prime material to prepare various items. In this section, you will learn about the properties of plastic making it a better choice like being a non-reactive, light strong and durable and poor conductor of heat and electricity.

Section 3.6 – This section deals with the concept of plastics and the environment. In this section, you will learn the detrimental effects of plastic on the environment. You will also learn about the process of decomposition by bacteria called biodegradation. You will learn that plastic is a non-biodegradable material and it takes several years to decompose. It causes environmental pollution. You will also learn that burning plastic, releases poisonous fumes causing air pollution. In this section, you will learn to avoid the use of plastic in daily life and use other alternate items like jute bags and paper bags. You will also learn the importance of segregating waste at the household level. You will learn about the 5Rs to be practised in daily life – reduce, refuse, recycle, reuse and recover.

To know more about the NCERT solutions Class 8 Science, Chapter 3 – Synthetic Fibres And Plastics explore the Exercises and questions below:

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