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? Some of the steps which can be taken to save the…
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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…
Read MoreBiodegradable and Non-biodegradable material
Question 1 What are bio-degradable material?Give example? Question 2 What are non-biodegradable material.Give example? 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 waste,paper,cotton,cloth,woollen cloth,jute,wood are all biodegradable material. They rot away with time and hence do not cause pollution…
Read MoreProperties 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? Properties of…
Read MoreTypes 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 MorePlastics
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…
Read MoreCharacteristics 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 MorePoly 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…
Read MorePolyester
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…
Read MoreNylon
Question 1 Name the first fully synthesised fibre? Question 2 What is nylon? Question 3 State the important properties of nylon? Question 4 Give the important uses of nylon? Question 5 Name the monomeric unit in nylon? Question 6 Why nylon is a thermoplastic polymer? Nylon It is the first fully synthetic fibre made by…
Read MoreRayon
Question 1 Name the man-made fibre prepared from natural material? Question 2 Name the man-made fibre which is regarded as artificial silk and why? Question 3 Name the fibre which is obtained by chemical treatment of wood pulp? Question 4 What is rayon? Question 5 How is rayon made? Question 6 Give few uses of rayon? Rayon…
Read MoreTypes of synthetic fibres
Question 1 What are synthetic fibres? Question 2 Define the term polymerisation? Question 3 What are polymers? Question 4 Name the 4 types of synthetic polymers? Types of synthetic fibres The man-made fibres produced from chemical substances are called synthetic fibres. They are made in industry by the chemical process called polymerisation.A synthetic fibre is…
Read MoreSynthetic Fibres
Question 1 What is a polymer? Question 2 Name the natural polymer from which cotton is made? Question 3 Name the units of which cellulose polymer is made? Question 4 Define the term monomer? Question 5 What are fibres? Question 6 What are natural polymers.Give example? Question 7 What are synthetic polymers.Give example? Synthetic fibres…
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