MCQOPTIONS
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MCQOPTIONS
| 1. |
In industries titanium is hardened through diffusion of carbon. The concentration of carbon at 1mm into the surface of the titanium slab is 0.25kg/m3 and at 3mm the concentration is 0.68kg/m3. The rate at which the carbon is entering into its surface is 1.27*10-9kg/m2.s. calculate the value of diffusion coefficient of carbon. |
| A. | 5.91*10<sup>-12</sup> |
| B. | 5.91*10<sup>-10</sup> |
| C. | 5.91*10<sup>-11</sup> |
| D. | 5.91*10<sup>-13</sup> |
| Answer» B. 5.91*10<sup>-10</sup> | |