What are natural fibres? How they are classified?

What are the raw materials used to manufacture synthetic fibres?

What is the purpose of creating the blended fibre?

What is the full form of PVC? State its one use.

Is plastic a biodegradable or non-biodegradable substance? Explain.

Fabric manufactures are increasingly developing 'eco- friendly' or 'green' fabrics. Comment.

How did plastics become the material of choice for so many varied applications?

Polythene bags are commonly used as carrying bags but their use is being discouraged these days. Explain.

How is polyester made? State its two characteristics and uses.