1963Mechanical EngineeringMedium
White cast iron________?
Ais produced by annealing process. It is soft, tough and easily machined metal
Bis produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material
Ccontains 1.7 to 3.5% carbon in free state and is obtained by the slow cooling of molten cast iron
Dis also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
Enone of the above
Correct answer
D. is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
Explanation
The correct answer is is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable.