Page 2 - Home Assignment

Q6 What do you understand by the terms ‘Monomers’ and ‘Polymers’? 1

Q7 Define ‘Polymerization’. 1

Concept – Types of Synthetic Fibres

Q1. Name the man-made fibre obtained from natural materials. 1

Q2 Name the first fully synthetic fibre. 1

Q3 Which fibre is also known as semi-synthetic fibre? 1

Q4 Write down two uses of the first fully synthetic fibre. 1

Q5 What is PET? 1

Q6 Write down two uses of polyester fibres. 1

Q7 Which fibre is used as the substitute for wool? 1

Q8 Write down two uses of Rayon

Q9 Write down two uses of Acrylic.

Concept – Characteristics of Synthetic Fibre

Q1. How can we compare the strength of the synthetic fibre and a natural fibre? 1

Q2 How can we differentiate the synthetic fibre and the natural fibre based on 1
water absorption property?

Q3 What impact does the moth have on the synthetic fibre and the natural fibre? 1

Q4 Natural fibres form wrinkles when washed, what will happen in the case of the 1
synthetic fibre?

Concept – Plastics

Q1. What is plastic? 1

Q2 Give four examples of things that we commonly use made up of plastics. 1

Q3 What is polythene? 1

Q4 What is the fullform of PVC? 1

Q5 Which material is used to make nonstick pans? 1

Q6 What do you understand by thermosetting plastics? 1

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