"Super conduction by metals is observed in the temperature range of
"
"Which of the following constituents of steels is softest and least strong
"
"Which of the following represents the allotropic forms of iron
"
"The molecules in a solid move
"
"Hardness of steel depends on
"
"Maximum percentage of carbon in ferrite is
"
"Railway rails are normally made of
"
"Induction hardening is the process of
"
"The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as
"
