Question

The point at which two liquidus lines meet is known as __ ________

(a) Eutectic point

(b) Isothermal point

(c) Solvus point

(d) Peritectic point

This question was posed to me by my college director while I was bunking the class.

I want to ask this question from Phases and Phase Diagrams topic in portion Constitution of Alloys and Phase Diagrams of Engineering Material & Metallurgy

Answer 1

Correct answer is (a) Eutectic point

To explain I would say: The liquidus line separates liquid and liquid+solid phase regions. Two liquidus lines meet at a point defined as the eutectic point. The corresponding temperature and composition are defined as eutectic temperature and eutectic composition.