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.

Differentiate between thermoplastics and thermosetting plastics. Give two examples of each.

Why rayon is called a semi-synthetic fibre? State any two characteristics and uses of rayon.

State four steps that we can take to protect our environment from plastic-related pollution.