Question

The structure of a polymer depends on:

• A. Crystal size
• B. Chain structure and crosslinking
• C. Grain size
• D. Surface finish

Hint:

In polymers, structural characteristics such as flexibility, toughness, and thermal behavior are controlled by the molecular chain arrangement and the extent of crosslinking.

Answer 1

The Correct Option is B

The properties and structure of a polymer are largely determined by its molecular architecture, specifically:
- The chain structure — whether the chains are linear, branched, or crosslinked.
- The degree of crosslinking — more crosslinks generally increase rigidity and reduce flexibility.
Crystal size and grain size are terms more commonly associated with metals and ceramics, not polymers. Surface finish affects mechanical behavior but does not define the fundamental structure of the polymer.
Hence, the polymer's structure is primarily influenced by how the chains are arranged and bonded to each other.