Which synthetic fibre contains the organic group similar to those which give fruits their sweet smell?

2

(a)

Write the name of fibre which is the first fully synthetic fibre.

2

(a)

The manufacture of which artificial fibres contributes to deforestation?

2

(a)

As a responsible citizen, we should remember the 4R principle. Can you tell what do 4Rs stand for?

2

(a)

For making PVC pipes, which type of plastic (thermoplastic or thermosetting plastic) is used?

2

(a)

Name the polymer which is used in making non-stick cookwares

2

(a)

Why cotton, wool and silk are natural fibres?

2

(a)

Why should one never wear polyester clothes while working in kitchen?

2

(a)

Why is nylon fibre becoming very popular for making clothes?

2

(a)

Name five articles made from nylon.

2

(a)

What is polyester?

2

(a)

What are petrochemicals?

2

(a)

What is plastic?

2

(a)

Why does plastic find such variety of uses?

2

(a)

When we add hot water in a plastic bottle, it gets deformed. What kind of plastic is it? Give two more examples.

2

(a)