Which of the following is not shipped in mild steel containers ?

A. Harden its surface
B. Soften its surface
C. Improve its reliability
D. None of these

A. Mild steel
B. Dead mild steel
C. Medium carbon steel
D. High carbon steel

A. Pig iron
B. Steel
C. Ferroalloys
D. All A., B. & C.

A. Chromium
B. Vanadium
C. Cobalt
D. Molybdenum

A. Iron
B. Silver
C. Calcium
D. Aluminium