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 Plastics (1) Plastic is … [Read more...] about Properties of Plastics
Class 8
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 weather. … [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