Production of substances
Production of substances: Overview
This topic covers concepts such as vulcanisation of rubber, rubber, types of synthetic fibres, rayon as a synthetic fibre, and nylon as a synthetic fibre.
Important Questions on Production of substances
What are the uses of synthetic fibers?

Which of the following is the strongest fibre?

Why natural Fibre are costlier than synthetic Fibre?

Is synthetic fibre cheaper than natural fibre? If yes explain.

What type of synthetic fiber is used in the market at low costs and with wide varieties of colour?

Which one is not a synthetic fiber?

What are the types of synthetic fiber?

Synthetic fibres are wrinkle resistant.

Give one example of man-made fibre.

What difference do you notice in the fabrics used for a shirt and an umbrella?

What are synthetic fibres?

Vulcanisation improves elasticity of rubber. What is meant by the term vulcanisation?

The process involving heating of rubber with sulphur is called

Vulcanisation makes rubber _____.

If you want to purchase a door mat made of synthetic fibre, which synthetic fibre door mat will you select? Why?

Nylon sarees are better than the cotton sarees. It is better to use only nylon sarees. Do you agree with this? Why?

Clothes made of some synthetic fibres are waterproof.

Clothes made of some synthetic fibres are wrinkle-free.

The stem pulp of the plant given in the picture is used as

Who am I?
If you pull me i will stretch.
