Equilibrium phase diagram for Copper (Cu)-Nickel (Ni) system is shown below Consider a CuNi alloy of composition 50wt%Ni50 wt\% Cu slowly cooled from a completely liquid state to a completely solid state, answer the following questions: (Identify the results on the phase diagram, in addition to writing the answer below) (8 Marks) i. State the type of the above phase diagram. ii. At what temperature does the first solid phase form? ii. At what temperature does the last remaining liquid solidify to complete solidification? iv. What is the melting point of copper