Engineering Materials
There are fourteen atoms in a unit cell of

Face centered cubic space lattice
Close packed hexagonal space lattice
Body centered cubic space lattice
None of these

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Engineering Materials
Smelting is the process of

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

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