(Solved): Please assist me with 2.1, 2.2, 2.3, 2.4 Question 2 2.1. Mention three different types of ferro ...

Please assist me with 2.1, 2.2, 2.3, 2.4

Question 2 2.1. Mention three different types of ferrous metals and one example of use. 2.2. During the process of heat treatment, distortions can take place mention few reasons to what causes the defect. 2.3. In a mechanical workshop, between aluminium and steel, which metal is easy to create into model or complex shapes as prototypes and what are the reasons. 2.4. What is the difference between hardening and Hardness?