Engineering Materials
Pig iron is the name given to

Iron containing huge quantities of carbon
Iron in molten form in the ladles
Raw material for blast furnace
Product of blast furnace made by reduction of iron ore

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Engineering Materials
Y-alloy contains

3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium
3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium
4 to 4.5% magnesium, 3 to 4% copper and rest aluminium
5 to 6% tin, 2 to 3% copper and rest aluminium

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Engineering Materials
Amorphous material is one

In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid
Which emits fumes on melting
Which is not attacked by phosphorous
In which atoms align themselves in a geometric pattern upon solidification

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