The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

A. 770°C

B. 910°C

C. 1050°C

D. Below recrystallization temperature

Answer: Option A

Solution(By Examveda Team)

Below 773°C (1,423°F), alpha iron becomes ferromagnetic (i.e., capable of being permanently magnetized), indicating a change in electronic structure but no change in crystal structure.