Question

Which of the following is not a characteristic trait of polymer materials?

(a) Low density

(b) Resistant to chemical attack

(c) Low cost

(d) High strength

The question was posed to me by my college professor while I was bunking the class.

The query is from Polymers and Polymerization, Polymer Additives topic in section Non Metallic Materials of Engineering Material & Metallurgy

Answer 1

Right choice is (d) High strength

To explain I would say: Polymers are a large group of repeating units of small molecules. They have a low density and cost, with good thermal and electrical insulation. They are also easy to fabricate and are resistant to chemical attack. Their low strength and stiffness can be improved by fiber reinforcement.