Engineering Materials
For the allotropic forms of iron, the points of arrest are

The points where there is no further flow of metal
The points of discontinuity
Constant for all metals
The points where no further change occurs

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Smelting is the process of

Reducing the ore with carbon in the presence of a flux
Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns
All of these
Removing the impurities like clay, sand etc. from the iron ore by washing with water

ANSWER DOWNLOAD EXAMIANS APP