Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Hypoeutectic cast irons
Hypereutectic cast irons
Eutectic cast irons
None of these

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Engineering Materials
Dow metal contains

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

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