Question

when water is cooled to a temperature x,it gets converted into ice at temperature x by a process called p. And when ice at temperature x is warmed ,it gets reconverted into water at the same temperature x in a process called p

Answer 1

x is 0°C
p is freezing.
and the conversion of ice to water is called melting

Answer 2

x = 0 c
process = freezing point