Question: Which of the following statements about thermoplastics is true?

Options:

1. They can be reshaped upon heating
2. They are chemically cross-linked
3. They have a fixed shape
4. They are always biodegradable

Correct Answer: They can be reshaped upon heating

Solution:

Thermoplastics can be reshaped upon heating, allowing them to be molded into various forms, unlike thermosetting plastics which cannot be reshaped once set.