While the recrystallisation temperature for pure metals is 0.3 T_m, the same for alloys is equal to __________ x T_m (where, T_m Melting temperature).

ANS:C - 0.70

The recrystallization temperature for alloys is typically around 0.5 to 0.7 times the melting temperature (Tm). This range may vary depending on the specific alloy composition and processing conditions. However, it is generally observed that the recrystallization temperature for alloys is slightly higher than that for pure metals. Therefore, none of the provided options accurately represent the typical relationship between the recrystallization temperature and the melting temperature for alloys.