Question

2. Which was the first synthetic fibre?
3. What are plastics ?​

Answer 1

Answer:

2. Nylon, the first synthetic fiber in the "fully synthetic" sense of that term, was developed by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s. It soon made its debut in the United States as a replacement for silk, just in time for the introduction of rationing during World War II.

3. Plastics are a wide range of synthetic or semi-synthetic materials, that usually use a polymers as a main ingredient. The plasticity during production makes it possible for plastic to be moulded, extruded or pressed into solid objects of various shapes, making them an adaptable material for many different uses.

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