Question

A man made material 'X' is used to make surf boards and small boats. Identify the material 'X' and its classification.

• A. 'X' is bakelite and it is thermoplastic.
• B. 'X' is polystyrene and it is thermoplastic.
• C. 'X' is polyurethane and it is thermosetting plastic.
• D. 'X' is melamine and it is thermosetting plastic.

Answer 1

The correct option is C 'X' is polyurethane and it is thermosetting plastic.

Polyurethane is used to make surfing boards and small boats because it is durable and can withstand water and salinity. The shape of materials made up of polyurethane cannot be changed once modelled to a specific shape. Thus, it belongs to thermosetting plastics.