Lakhmir Singh Science Class 8 Solutions Synthetic Fibers and Plastics (Chapter 3)
Lakhmir Singh Solutions for Class 8 Science Chapter 3, are introduced to give you all the information about man-made fabric and plastic that we use in our day-to-day life. Some of the main topics of this chapter include what is synthetic fibres, what are the types of synthetic fibres, what are the characteristics of synthetic fibres, plastics, and plastic as a material of choice.
The chapter of Lakhmir Singh Solutions mentions synthetic fibres such as Polyester, Nylon, Rayon, and Acrylic. It describes how plastic and synthetic fibres are harmful to mankind and the environment. Characteristics of plastic such as reactivity, lightweight, durability, etc. are discussed with the help of examples and diagrams in the chapter.
The chapter of Lakhmir Singh Solutions for Class 8 Science Chapter 3 ‘Synthetic Fibers and Plastics’ has around 5 exercises with a total of 83 questions. All the questions are according to the latest syllabus released by NCERT. Also, we have made the chapter interesting with our step-by-step solutions so that you can grasp the entire content properly. So, solving the exercises will help you prepare for the exams well.
Important Topics for Lakhmir Singh Solutions for Class 8 Science Chapter 3
The main topics and sub-topics of Lakhmir Singh Class 8 Science Solutions Chapter 3 – Synthetic Fibers and Plastics are provided below:
Synthetic fibres are also called man-made fibres. They are achieved by chemical processing of petrochemicals. These fibres can be woven into a fabric, just like natural fibre and have a wide range of use including the household articles like ropes, buckets, containers, furniture, etc. to highly expert uses in aircraft, spacecraft, ships, health care, etc.
Properties of Synthetic Fibers
The properties of synthetic fibres are provided below:
- They are durable
- They quickly dry up
- They are less expensive
- They are readily available
- They can be easily maintained and do not need extra care
Types of Synthetic Fibers
There are different types of synthetic fibres available including Rayon, Polyester, Nylon, Acrylic, and Plastic.
Plastics are generally made from petroleum and natural gas. They are defined as a substance that can be heated and moulded in any shape after cooling. For example Polythene.
Properties of Plastic
The properties of plastics are that they are reusable, do not rust, lightweight, non-reactive, can be easily handled, and are poor conductors of heat and electricity.
Types of Plastics
Generally, there are two types of plastics available including thermoplastics and thermosetting plastics.
Uses of Plastics
Plastics are used in making bottles, plastic toys, and packaging many goods like containers, etc.
Steps that are required to protect the Environment
Plastics are not environment friendly. However, there are certain steps that need to be taken in order to protect our environment. Some of those steps are listed below:
- We should carry jute bags or cotton bags for shopping.
- We should not buy products with large plastic packaging.
- We should encourage people to recycle and reuse plastic.
- We should never throw plastic articles into water bodies, drains, or on roads.
Exercise-Wise Discussion of Lakhmir Singh Solutions Class 8 Science Chapter 3 – Synthetic Fibers and Plastics
This chapter of Class 8 Science has a total of 5 exercises with a total of 83 questions which are entirely based on the latest exam pattern. The questions range from basic to advance level so that you can easily understand each and every topic of the chapter. Some exercises are divided as follows:
Exercise 1 – Very Short Answer Type Questions
The first exercise of the chapter has around 15 questions which are very short answer type questions. These questions are based on man-made fabric and plastic that we use in our day-to-day life.
Exercise 2 – Short Answer Type Questions
This exercise has around 35 questions which are completely related to the main topics of this chapter including what is synthetic fibres, the types of synthetic fibres, the characteristics of synthetic fibres, plastics, and plastic as a material of choice.
Exercise 3 – Long Answer Type Questions
This exercise set has a total of 8 questions in which you need to give a proper explanation of the situation mentioned.
Exercise 4 – Multiple Choice Question (MCQs)
This exercise set has a total of 20 questions in which you need to choose the right answer from the options given.
Exercise 5 – Questions Based on High Order Thinking Skills
This exercise set has a total of 5 questions in which there are questions based on high order thinking skills. If you face issues in solving the questions, you can refer to Lakhmir Singh Solutions for Chapter 3 by Instasolv.
Benefits of Lakhmir Singh and Manjit Kaur Solutions for Class 8 Science Chapter 3 – Synthetic Fibers and Plastics
- The Lakhmir Singh and Manjit Kaur Solutions Science Class 8 for Chapter 3 prepared by Instasolv covers all the topics and sub-topics related to Synthetic Fibers and Plastics.
- The solutions are based on the approved latest syllabus provided by the NCERT.
- These solutions are prepared by well-qualified subject experts at Instasolv.
- These solutions will help you in performing better in the CBSE exams.
- The answers provided by our expert teachers are presented in concise, accurate, and in a short manner.
- Keep the Lakhmir Singh Solutions handy as this will help you in revision before the exams.