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Pick out the wrong statement. | |
A. | Cold cracking of a weld is due to the presence of hydrogen gas in the weld. [Wrong Answer] |
B. | True stress is given by, σ = σE (1 + εE), where σE and εE are engineering stress and engineering strain respectively. [Wrong Answer] |
C. | Phosphorous can be easily recovered in the iron blast furnace. [Correct Answer] |
D. | High residual stress at the surface is beneficial for fatigue properties of a material. [Wrong Answer] |