Question

Specific heat of materials is expressed in terms of __________

(a) W/m K

(b) J/K

(c) J/kg K

(d) m^3/kg

The question was asked in a job interview.

My question comes from Thermal Properties topic in chapter Properties of Engineering Materials of Engineering Material & Metallurgy

Answer 1

Right option is (c) J/kg K

To explain I would say: Specific heat capacity of a material is an intensive property expressed in terms of J/kg K. Thermal conductivity, heat capacity, and specific volume are expressed in terms of W/m K, J/K, and m^3/kg correspondingly.