For an alloy of $50$ was $5n,$ write the answers of the

following questions next to it: $($each $2p)$

a$)$ The approximate composition of $$ phase at $150C$

b$)$ The name and relative fraction of the phase at $275C$

c$)$ The lowest temperature that still some liquid phase

present $$

d$)$ The approximate temperature where the first solid

hase starts to appear $..............$

It is possible to have a single solid phase field at a

rtain temperature $$ True or False?