Consider the following work materials: 1. Titanium 2. Mild steel 3. Stainless steel 4. Grey cast iron. The correct sequence of these materials in terms of increasing order of difficulty in machining is:

Consider the following work materials: 1. Titanium

1.	Consider the following work materials: 1. Titanium 2. Mild steel 3. Stainless steel 4. Grey cast iron. The correct sequence of these materials in terms of increasing order of difficulty in machining is:
A.	4, 2, 3, 1
B.	4, 2, 1, 3
C.	2, 4, 3, 1
D.	2, 4, 1, 3
Answer» B. 4, 2, 1, 3

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Consider the following work materials: 1. Titanium 2. Mild steel 3. Stainless steel 4. Grey cast iron. The correct sequence of these materials in terms of increasing order of difficulty in machining is:

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