Solutions of Materials In Daily Life from SCIENCE For Class 8
B K Gowel Science Solutions from Chapter 3 - Materials in Daily Life
BK GOWEL and SANGEETA's SCIENCE For Class 8 detailed solutions to all the exercises of Materials In Daily Life for 8th CBSE are provided here. The topics covered are such as Plastics, Fibres and, Synthetic Fibres. The points to remember in the BK GOWEL and SANGEETA's Book Solutions is ideal for quick revision.
Practice Other Topics from Materials in Daily Life
The topic deals with fibre, its types and their characteristics: natural (plants and animals) and synthetic fibres (plastic). It briefs on monomers and polymers and the process of polymerisation. It also discusses types of polymer.
This topic sheds light on synthetic polymers and how a mechanism has been developed for the polymerisation of monomers of some substances. It mentions that these substances are the raw materials for synthetic plastics, like rubber, silicone, etc.
The topic elaborates on the advent of synthetic fibres. It also highlights various synthetic fibres like rayon, nylon, polyester, acrylic, lycra, or spandex. The properties and uses of these synthetic fibres are also discussed in detail.
In this topic, we will learn about plastics and their types. It describes thermosets and thermoplastics and their properties. It also provides a comparative study of the two groups of plastics.
This topic explores the uses of plastics, which broadly depends on the properties of plastics. The few properties of plastic are weather resistance, chemical resistance, toughness, easy moulding, ease of colour, a good insulator, etc.
In this topic, we will learn about the disadvantages of synthetic plastics. Plastics are a major pollutant that emits a foul smell and poisonous gases on burning and they can easily catch fire and melts.
This topic highlights that plastic is a non-biodegradable waste and a major source of water and soil pollution. It discusses the measures to reduce the pollution from plastic.
