Question

Which of the following is/are the characteristics of carbon and graphite?

(a) It has good thermal and electrical conductivity

(b) Excellent thermal shock resistance

(c) It has good thermal and electrical conductivity, excellent thermal shock resistance, weak and brittle as compared with metals

(d) Weak and brittle as compared with metals and have excellent thermal shock resistance

This question was posed to me in an international level competition.

This interesting question is from Materials in section Materials of Corrosion Engineering

Answer 1

The correct option is (c) It has good thermal and electrical conductivity, excellent thermal shock resistance, weak and brittle as compared with metals

For explanation: Carbon and graphite are the unique non-metallics that are good thermal and electrical conductors with excellent thermal shock resistance. They are weak and brittle as compared with metals.