Engineering Materials
The material in which the atoms are arranged regularly in some directions but not in others, is called

None of these
Mesomorphous material
Crystalline material
Amorphous material

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Engineering Materials
Dow metal contains

92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg
90% aluminium and 90% copper
94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
90% magnesium and 9% aluminium with some copper

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