Question 1 What are the various ways to save the environment from excessive plastic wastes? Question 2 What is meant by 3 R's principle in context of use of plastics? Question 3 State the ways in which we can avoid the use of plastics? NCERT Solutions Class 8 Science Some of the steps which can be taken to save the environment from plastic waste are: 1)We … [Read more...] about Steps to save environment from plastic waste
Synthetic fibres and Plastics
Harmful effects of Plastics
Question 1 How the use of plastic has a bad effect on the environment? Question 2 Explain,why disposal of plastic waste is a major problem.Give reason? Question 3 State whether plastic is biodegradable or non-biodegradable? Question 4 How do carelessly thrown plastic bags affect dirty water drains and sewers? Question 5 How do carelessly thrown plastic bags affect … [Read more...] about Harmful effects of Plastics
Biodegradable and Non-biodegradable material
Question 1 What are bio-degradable material?Give example? Question 2 What are non-biodegradable material.Give example? NCERT Solutions Class 8 Science Biodegradable and Non-biodegradable material A material which gets decomposed through natural processes (such as action of bacteria)are called as biodegradable material. For Ex:Plant waste,animal … [Read more...] about Biodegradable and Non-biodegradable material
Properties of plastics
Question 1 Why plastic containers are preferred for storing food? Question 2 Why plastics containers are used to store chemicals? Question 3 Why handles of cooking utensils are made of plastic? Question 4 Why handles of screw drivers used by electricians are also made of plastic? Question 5 Write few properties of plastics? NCERT Solutions Class 8 … [Read more...] about Properties of plastics
Types of plastics
Question 1 What are thermoplastics? Question 2 Give example of thermoplastics? Question 3 What are thermosetting plastics? Question 4 Give example of thermosetting plastics? Question 5 What are the various types of plastics? Question 6 Why are thermoplastics not used for making frying pan handles? Question 7 Why frying pan handles are made of thermosetting … [Read more...] about Types of plastics
Plastics
Question 1 What are plastics? Question 2 Give few examples of plastics? Question 3 Give few uses of polythene? Question 4 Give few use of polyvinyl chloride? Question 5 Give few uses of bakelite? Question 6 Give few uses of melamine? Question 7 Give few uses of teflon? Question 8 Write 2 characteristics of bakelite? Question 9 Write 2 characteristics of … [Read more...] about Plastics
Characteristics of synthetic fibres
Question 1 Why should not wear clothes made of synthetic fibres while working in kitchen? Question 2 Write few characteristics of synthetic fibres? Question 3 Why synthetic clothes are more durable? Question 4 What are the disadvantages of synthetic fibres? Question 5 The clothes made of synthetic fibres are not suitable for wearing during hot summer … [Read more...] about Characteristics of synthetic fibres
Poly Ethylene Terephthalate and Acrylic
Question 1 Give the full form of PET? Question 2 Give few properties of Poly ethylene terephthalate? Question 3 Which synthetic fibre feels like wool and used as a substitute for wool? Question 4 State the uses of PET? Question 5 What is acrylic? Question 6 Write the uses of acrylic fibres? Question 7 Write few properties of acrylic fibre? NCERT Solutions … [Read more...] about Poly Ethylene Terephthalate and Acrylic
Polyester
Question 1 Which synthetic fibre contains the organic group similar to those which give fruits their sweet smell? Question 2 To which kind of synthetic fibres does terylene belong? Question 3 What is polyester? Question 4 Name a popular polyester? Question 5 What are esters? Question 6 Polyester is a thermoplastic polymer.Discuss? Question 7 What is a … [Read more...] about Polyester