Question

Which of the following metal has a melting point of about 660oC and latent heat of fusion 92.7 cal/g?

(a) Aluminium

(b) Lead

(c) Magnesium

(d) Tin

The question was posed to me in a job interview.

Origin of the question is Furnaces for Melting topic in division Pouring – Gating Design, Melting Furnaces, Melting and Casting Quality of Casting-Forming-Welding I

Answer 1

Right option is (a) Aluminium

Easy explanation: Iron is the metal having a melting point of about 660oC and latent heat of fusion of 92.7 cal/g. It has a mean specific heat of 0.237 cal/g^oC and heat required for melting 1 Kg of iron is 1022 kJ.