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Correct Answer : Option (C) : Softness
Explanation : Pure metals are soft and ductile, which is not ideal for most engineering applications. Therefore, alloys are used to fulfill the requirements. This explains why pure gold is mixed with impurities to make ornaments.
Correct Answer : 88% tin, 4% copper and 8% antimony
Correct Answer : Coarse pearlite
Explanation : Hypoeutectoid steels are heated above the A3 line and then cooled in the furnace. Then it removed from the furnace and then cooled at room temperature. This results in coarse pearlite with excess ferrite.
Correct Answer : is more ductile and has a less tendency to distort during heat treatment
