Question

Which of the following is best explanation for the given statement -
Polystyrene foam is used in insulating refrigerators and cold stores.

• A. Polystyrene foam is heavy, thus, acts as a proper insulator.
• B. Polystyrene foam is the cheapest among all other insulators.
• C. When air is blown through molten polystyrene, it forms light foam, which is an excellent insulating and packaging material.
• D. Polystyrene foam is biodegradable in comparison to rest polymeric insulators.

Answer 1

The correct option is C When air is blown through molten polystyrene, it forms light foam, which is an excellent insulating and packaging material.

When air is blown through molten polystryrene, it forms light foam or foamed plastic. It has excellent insulating property and is a good shock-proof material.