Production of substances

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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

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What are the uses of synthetic fibers?

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Which of the following is the strongest fibre?
 

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Why natural Fibre are costlier than synthetic Fibre?

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

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

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Which one is not a synthetic fiber?

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What are the types of synthetic fiber?

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Synthetic fibres are wrinkle resistant.

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Give one example of man-made fibre.

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

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What are synthetic fibres?

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

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The process involving heating of rubber with sulphur is called

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Vulcanisation makes rubber _____.

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

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

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Clothes made of some synthetic fibres are waterproof. 

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Clothes made of some synthetic fibres are wrinkle-free. 

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

Question Image

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Who am I?

If you pull me i will stretch.