Multiple Choice Question (MCQ)
Question: What is the process of heat treatment?
A.
The process of heating and cooling to change the structure and properties
B.
The process of heating to change the dimensions
C.
The process of cooling to measure the dimensions
D.
The process of heating and bending as per our requirement
Correct Answer: The process of heating and cooling to change the structure and properties
Explanation
Cast iron in which carbon is present in combined form or in carbide form known as white cast iron. White colour is due to carbide formation. It contain up to 2.3 percent carbon. It is hard and not suitable for machining. This iron has high tensile strength and a low compressive strength.