Question

How many types of systems are applicable for phase diagrams?

(a) One

(b) Two

(c) Three

(d) Four

I got this question in final exam.

The query is from Phases and Phase Diagrams topic in division Constitution of Alloys and Phase Diagrams of Engineering Material & Metallurgy

Answer 1

The correct option is (d) Four

For explanation I would say: System may be defined as either a specific body of material or a series of possible alloys consisting of the same components. A system having one component is called as a unary system. Similarly, two, three, and four component systems are called binary, ternary, and quaternary systems respectively.